ffmpeg and pipe output
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ffmpeg and pipe output
 
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Hi All
It's my first post here after spending a lot of time hunting on the web to find a solution to my problem, i did not find a solution. I'm trying to use ffmpeg to output to a pipe.. I'm trying to send video elementry stream to a program called esvideo2pes which is part of the OpenCaster DVB package. ffmpeg hangs when i try to do this and does not start encoding. Script is something like this: # mkfifo /tmp/video.es fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize 1024k /tmp/video.es & esvideo2pes /tmp/video.es > video.pes etc etc I hope someone can point me in the right direction, eventually i would like to generate both audio and video elementry streams at once and send them to fifo's for further processing but we better get one working first! Thanks Rob _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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On Jan 02 16:48:04, Rob, M0DTS wrote:
> Hi All > > It's my first post here after spending a lot of time hunting on the web > to find a solution to my problem, i did not find a solution. > > I'm trying to use ffmpeg to output to a pipe.. > > I'm trying to send video elementry stream to a program called > esvideo2pes which is part of the OpenCaster DVB package. > > ffmpeg hangs when i try to do this and does not start encoding. > > Script is something like this: > Give us the exact command line. > # > > mkfifo /tmp/video.es > > fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > 1024k /tmp/video.es & There's no "fmpeg", and you don't even specify a format, framerate, or size for the /dev/video input, so this cannot work (pipes or not); or this is not your commandline. > esvideo2pes /tmp/video.es > video.pes What is "es", what is "pes", what is esvideo2eps suppose to do, and why don't you do it in ffmpeg directly? > I hope someone can point me in the right direction, eventually i would > like to generate both audio and video elementry streams at once and send > them to fifo's for further processing but we better get one working > first! What are you trying to do, really? _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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On Sat, 2010-01-02 at 19:13 +0100, Jan Stary wrote:
> On Jan 02 16:48:04, Rob, M0DTS wrote: > > Hi All > > > > It's my first post here after spending a lot of time hunting on the web > > to find a solution to my problem, i did not find a solution. > > > > I'm trying to use ffmpeg to output to a pipe.. > > > > I'm trying to send video elementry stream to a program called > > esvideo2pes which is part of the OpenCaster DVB package. > > > > ffmpeg hangs when i try to do this and does not start encoding. > > > > Script is something like this: > > > > Give us the exact command line. > > > # > > > > mkfifo /tmp/video.es > > > > fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > > 1024k /tmp/video.es & > > There's no "fmpeg", and you don't even specify a format, framerate, > or size for the /dev/video input, so this cannot work (pipes or not); > or this is not your commandline. > > > esvideo2pes /tmp/video.es > video.pes > > What is "es", what is "pes", what is esvideo2eps suppose to do, > and why don't you do it in ffmpeg directly? > > > I hope someone can point me in the right direction, eventually i would > > like to generate both audio and video elementry streams at once and send > > them to fifo's for further processing but we better get one working > > first! > > What are you trying to do, really? Ok The /dev/video0 video comes from a hauppauge capture card in MPEG-2 program stream format - see below. The command line is what i'm running (but is ffmpeg yes!) There are some v4l2 commands to set the mpeg encoder, see below... Some parameters are set by default so are not included like framerate of 25 for example. v4l2-ctl -c stream_type=0 v4l2-ctl -c video_bitrate=15000000 v4l2-ctl -c video_bitrate_mode=1 v4l2-ctl -c video_aspect=1 v4l2-ctl --set-fmt-video=width=704,height=576 v4l2-ctl --set-input=2 ffmpeg seems to be the only way i can seperate out the elementry streams from the program stream coming from the device. The tools in opencaster do not support program stream input, only elementry streams. What i'm doing is generating some elementry CBR (or as close as possible) streams for the audio and video, they eventually need to be seperate transport streams which as far as i'm aware ffmpeg cannot do...? This is why i'm using seperate tools to convert from elementry stream to program stream to transport stream with the associated pid's that I require - without re-compiling i dont think ffmpeg can change pid's either..? These audio and video transport streams are them re-muxed with another program along with PAT,PMT,SDT etc... I hope i have made some sense of that for you! Rob _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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In reply to this post by Rob, M0DTS
Rob, M0DTS wrote:
> Hi All > > It's my first post here after spending a lot of time hunting on the web > to find a solution to my problem, i did not find a solution. > > I'm trying to use ffmpeg to output to a pipe.. > > I'm trying to send video elementry stream to a program called > esvideo2pes which is part of the OpenCaster DVB package. > > ffmpeg hangs when i try to do this and does not start encoding. > > Script is something like this: > > > # > > mkfifo /tmp/video.es > > fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > 1024k /tmp/video.es & > > esvideo2pes /tmp/video.es > video.pes pes ? Is that right ? In the meantime you want to lower the bitrate to 1450k, which for mpeg2 is very low and quality will be low as a result. Is that what you want? ffmpeg -formats gives among others DE mpeg MPEG-1 System format E mpeg1video raw MPEG-1 video E mpeg2video raw MPEG-2 video DE mpegts MPEG-2 transport stream format D mpegtsraw MPEG-2 raw transport stream format D mpegvideo raw MPEG video and AFAIK -f mpeg gives you the wanted pes > etc > etc > > > I hope someone can point me in the right direction, eventually i would > like to generate both audio and video elementry streams at once and send > them to fifo's for further processing but we better get one working > first! > > Thanks > > Rob > > _______________________________________________ > ffmpeg-user mailing list > [hidden email] > https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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In reply to this post by Rob, M0DTS
Rob, M0DTS wrote:
> On Sat, 2010-01-02 at 19:13 +0100, Jan Stary wrote: >> On Jan 02 16:48:04, Rob, M0DTS wrote: >>> Hi All >>> >>> It's my first post here after spending a lot of time hunting on the web >>> to find a solution to my problem, i did not find a solution. >>> >>> I'm trying to use ffmpeg to output to a pipe.. >>> >>> I'm trying to send video elementry stream to a program called >>> esvideo2pes which is part of the OpenCaster DVB package. >>> >>> ffmpeg hangs when i try to do this and does not start encoding. >>> >>> Script is something like this: >>> >> Give us the exact command line. >> >>> # >>> >>> mkfifo /tmp/video.es >>> >>> fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video >>> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >>> 1024k /tmp/video.es & >> There's no "fmpeg", and you don't even specify a format, framerate, >> or size for the /dev/video input, so this cannot work (pipes or not); >> or this is not your commandline. >> >>> esvideo2pes /tmp/video.es > video.pes >> What is "es", what is "pes", what is esvideo2eps suppose to do, >> and why don't you do it in ffmpeg directly? >> >>> I hope someone can point me in the right direction, eventually i would >>> like to generate both audio and video elementry streams at once and send >>> them to fifo's for further processing but we better get one working >>> first! >> What are you trying to do, really? > > > Ok The /dev/video0 video comes from a hauppauge capture card in MPEG-2 > program stream format - see below. The DVB versions create a transport stream If you do: cat /dev/video0 > test.mpg stop it with ctrl-c what does: ffmpeg -i test.mpg tell you about this file ? > The command line is what i'm running (but is ffmpeg yes!) > There are some v4l2 commands to set the mpeg encoder, see below... > Some parameters are set by default so are not included like framerate of > 25 for example. > > v4l2-ctl -c stream_type=0 > v4l2-ctl -c video_bitrate=15000000 > v4l2-ctl -c video_bitrate_mode=1 > v4l2-ctl -c video_aspect=1 > v4l2-ctl --set-fmt-video=width=704,height=576 > v4l2-ctl --set-input=2 > > ffmpeg seems to be the only way i can seperate out the elementry streams > from the program stream coming from the device. The tools in opencaster > do not support program stream input, only elementry streams. > > What i'm doing is generating some elementry CBR (or as close as > possible) streams for the audio and video, they eventually need to be > seperate transport streams which as far as i'm aware ffmpeg cannot > do...? > > This is why i'm using seperate tools to convert from elementry stream to > program stream to transport stream with the associated pid's that I > require - without re-compiling i dont think ffmpeg can change pid's > either..? > > These audio and video transport streams are them re-muxed with another > program along with PAT,PMT,SDT etc... > > > I hope i have made some sense of that for you! > > Rob > > > > _______________________________________________ > ffmpeg-user mailing list > [hidden email] > https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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In reply to this post by Rob, M0DTS
On Jan 02 18:33:43, Rob, M0DTS wrote:
> On Sat, 2010-01-02 at 19:13 +0100, Jan Stary wrote: > > On Jan 02 16:48:04, Rob, M0DTS wrote: > > > Hi All > > > > > > It's my first post here after spending a lot of time hunting on the web > > > to find a solution to my problem, i did not find a solution. > > > > > > I'm trying to use ffmpeg to output to a pipe.. > > > > > > I'm trying to send video elementry stream to a program called > > > esvideo2pes which is part of the OpenCaster DVB package. > > > > > > ffmpeg hangs when i try to do this and does not start encoding. > > > > > > Script is something like this: > > > > > > > Give us the exact command line. > > > > > # > > > > > > mkfifo /tmp/video.es > > > > > > fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > > > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > > > 1024k /tmp/video.es & > > > > There's no "fmpeg", and you don't even specify a format, framerate, > > or size for the /dev/video input, so this cannot work (pipes or not); > > or this is not your commandline. > > > > > esvideo2pes /tmp/video.es > video.pes > > > > What is "es", what is "pes", what is esvideo2eps suppose to do, > > and why don't you do it in ffmpeg directly? > > > > > I hope someone can point me in the right direction, eventually i would > > > like to generate both audio and video elementry streams at once and send > > > them to fifo's for further processing but we better get one working > > > first! > > > > What are you trying to do, really? > > > Ok The /dev/video0 video comes from a hauppauge capture card in MPEG-2 > program stream format - see below. But you need to tell ffmpeg that, which you don't. > The command line is what i'm running (but is ffmpeg yes!) Please use script(1) to give us the exact commandline(s), and ffmpeg's exact response. > There are some v4l2 commands to set the mpeg encoder, see below... > Some parameters are set by default so are not included like framerate of > 25 for example. > > v4l2-ctl -c stream_type=0 > v4l2-ctl -c video_bitrate=15000000 > v4l2-ctl -c video_bitrate_mode=1 > v4l2-ctl -c video_aspect=1 > v4l2-ctl --set-fmt-video=width=704,height=576 > v4l2-ctl --set-input=2 Whether you use some 3rd party tool to set the capturing card's parameters or they are the card's defaults, you still need to tell ffmpeg what these are, which you don't. > ffmpeg seems to be the only way i can seperate out the elementry streams > from the program stream coming from the device. What "elementry streams". You use "-an" on a capturing device, so there's just one video stream (an mpeg2video stream). > The tools in opencaster > do not support program stream input, only elementry streams. > > What i'm doing is generating some elementry CBR (or as close as > possible) streams for the audio and video, There's no audio; you say "-an" yourself". > they eventually need to be seperate transport streams Why? > which as far as i'm aware ffmpeg cannot do...? > > This is why i'm using seperate tools to convert from elementry stream to > program stream to transport stream with the associated pid's that I > require - without re-compiling i dont think ffmpeg can change pid's > either..? Sorry, I don;t know what "pid"s are in this context, and what you require about them ... > These audio and video transport streams are them re-muxed with another > program along with PAT,PMT,SDT etc... > > I hope i have made some sense of that for you! Not really. From the command you showed us, I gather you are trying to capture one mpeg2stream - and than do _what_ with it? Give us the big picture. _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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In reply to this post by belcampo
belcampo wrote:
> Rob, M0DTS wrote: >> On Sat, 2010-01-02 at 19:13 +0100, Jan Stary wrote: >>> On Jan 02 16:48:04, Rob, M0DTS wrote: >>>> Hi All >>>> >>>> It's my first post here after spending a lot of time hunting on the >>>> web >>>> to find a solution to my problem, i did not find a solution. >>>> >>>> I'm trying to use ffmpeg to output to a pipe.. >>>> >>>> I'm trying to send video elementry stream to a program called >>>> esvideo2pes which is part of the OpenCaster DVB package. >>>> >>>> ffmpeg hangs when i try to do this and does not start encoding. >>>> >>>> Script is something like this: >>>> >>> Give us the exact command line. >>> >>>> # >>>> >>>> mkfifo /tmp/video.es >>>> >>>> fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f >>>> mpeg2video >>>> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >>>> 1024k /tmp/video.es & >>> There's no "fmpeg", and you don't even specify a format, framerate, >>> or size for the /dev/video input, so this cannot work (pipes or not); >>> or this is not your commandline. >>> >>>> esvideo2pes /tmp/video.es > video.pes >>> What is "es", what is "pes", what is esvideo2eps suppose to do, >>> and why don't you do it in ffmpeg directly? >>> >>>> I hope someone can point me in the right direction, eventually i would >>>> like to generate both audio and video elementry streams at once and >>>> send >>>> them to fifo's for further processing but we better get one working >>>> first! >>> What are you trying to do, really? >> >> >> Ok The /dev/video0 video comes from a hauppauge capture card in MPEG-2 >> program stream format - see below. > Is it an analog-capture card like the pvr-?50 models or from DVB-T or > DVB-S > The DVB versions create a transport stream > If you do: > cat /dev/video0 > test.mpg > stop it with ctrl-c > what does: > ffmpeg -i test.mpg > tell you about this file ? Ok the capture card is Analogue PVR-350 Here's the test file report... rob@DATV:~/datv$ ffmpeg -i test.mpg FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-pp --enable-swscaler --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg --enable-libgsm --enable-dc1394 --disable-debug --enable-shared --prefix=/usr libavutil version: 1d.49.3.0 libavcodec version: 1d.51.38.0 libavformat version: 1d.51.10.0 built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) Input #0, mpeg, from 'test.mpg': Duration: 00:00:02.9, start: 0.276156, bitrate: 16046 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 704x576, 15000 kb/s, 25.00 fps(r) Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 192 kb/s Must supply at least one output file rob@DATV:~/datv$ >> The command line is what i'm running (but is ffmpeg yes!) >> There are some v4l2 commands to set the mpeg encoder, see below... >> Some parameters are set by default so are not included like framerate of >> 25 for example. >> >> v4l2-ctl -c stream_type=0 >> v4l2-ctl -c video_bitrate=15000000 >> v4l2-ctl -c video_bitrate_mode=1 >> v4l2-ctl -c video_aspect=1 >> v4l2-ctl --set-fmt-video=width=704,height=576 >> v4l2-ctl --set-input=2 >> >> ffmpeg seems to be the only way i can seperate out the elementry streams >> from the program stream coming from the device. The tools in opencaster >> do not support program stream input, only elementry streams. >> >> What i'm doing is generating some elementry CBR (or as close as >> possible) streams for the audio and video, they eventually need to be >> seperate transport streams which as far as i'm aware ffmpeg cannot >> do...? > ffmpeg can do this with the -f mpegts option Ok, but can i change the video pid and stop the other pids like pat pmt etc? i think they are added in during muxing.. >> >> This is why i'm using seperate tools to convert from elementry stream to >> program stream to transport stream with the associated pid's that I >> require - without re-compiling i dont think ffmpeg can change pid's >> either..? >> >> These audio and video transport streams are them re-muxed with another >> program along with PAT,PMT,SDT etc... >> >> >> I hope i have made some sense of that for you! >> >> Rob >> >> >> >> _______________________________________________ >> ffmpeg-user mailing list >> [hidden email] >> https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user > > _______________________________________________ > ffmpeg-user mailing list > [hidden email] > https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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In reply to this post by Jan Stary
Jan Stary wrote:
> On Jan 02 18:33:43, Rob, M0DTS wrote: > >> On Sat, 2010-01-02 at 19:13 +0100, Jan Stary wrote: >> >>> On Jan 02 16:48:04, Rob, M0DTS wrote: >>> >>>> Hi All >>>> >>>> It's my first post here after spending a lot of time hunting on the web >>>> to find a solution to my problem, i did not find a solution. >>>> >>>> I'm trying to use ffmpeg to output to a pipe.. >>>> >>>> I'm trying to send video elementry stream to a program called >>>> esvideo2pes which is part of the OpenCaster DVB package. >>>> >>>> ffmpeg hangs when i try to do this and does not start encoding. >>>> >>>> Script is something like this: >>>> >>>> >>> Give us the exact command line. >>> >>> >>>> # >>>> >>>> mkfifo /tmp/video.es >>>> >>>> fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video >>>> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >>>> 1024k /tmp/video.es & >>>> >>> There's no "fmpeg", and you don't even specify a format, framerate, >>> or size for the /dev/video input, so this cannot work (pipes or not); >>> or this is not your commandline. >>> >>> >>>> esvideo2pes /tmp/video.es > video.pes >>>> >>> What is "es", what is "pes", what is esvideo2eps suppose to do, >>> and why don't you do it in ffmpeg directly? >>> >>> >>>> I hope someone can point me in the right direction, eventually i would >>>> like to generate both audio and video elementry streams at once and send >>>> them to fifo's for further processing but we better get one working >>>> first! >>>> >>> What are you trying to do, really? >>> >> Ok The /dev/video0 video comes from a hauppauge capture card in MPEG-2 >> program stream format - see below. >> > > But you need to tell ffmpeg that, which you don't. > > >> The command line is what i'm running (but is ffmpeg yes!) >> > > Please use script(1) to give us the exact commandline(s), > and ffmpeg's exact response. > > >> There are some v4l2 commands to set the mpeg encoder, see below... >> Some parameters are set by default so are not included like framerate of >> 25 for example. >> >> v4l2-ctl -c stream_type=0 >> v4l2-ctl -c video_bitrate=15000000 >> v4l2-ctl -c video_bitrate_mode=1 >> v4l2-ctl -c video_aspect=1 >> v4l2-ctl --set-fmt-video=width=704,height=576 >> v4l2-ctl --set-input=2 >> > > Whether you use some 3rd party tool to set the capturing card's > parameters or they are the card's defaults, you still need to > tell ffmpeg what these are, which you don't. > > >> ffmpeg seems to be the only way i can seperate out the elementry streams >> from the program stream coming from the device. >> > > What "elementry streams". You use "-an" on a capturing device, > so there's just one video stream (an mpeg2video stream). > > >> The tools in opencaster >> do not support program stream input, only elementry streams. >> >> What i'm doing is generating some elementry CBR (or as close as >> possible) streams for the audio and video, >> > > There's no audio; you say "-an" yourself". > > >> they eventually need to be seperate transport streams >> > > Why? > > >> which as far as i'm aware ffmpeg cannot do...? >> >> This is why i'm using seperate tools to convert from elementry stream to >> program stream to transport stream with the associated pid's that I >> require - without re-compiling i dont think ffmpeg can change pid's >> either..? >> > > Sorry, I don;t know what "pid"s are in this context, > and what you require about them ... > > until i get at least video working. Here is the exact shell script i used to start it off.. If i tell ffmpeg to output to a normal test.mpg file and not a fifo it encodes without any problem. #!/bin/sh # Batch file for PVR-350 Card #PVR-150 card settings.. v4l2-ctl -c audio_layer_ii_bitrate=9 #192Kbps v4l2-ctl -c audio_stereo_mode=0 #Stereo v4l2-ctl -c stream_type=0 #MPEG-2 Program Stream=0 v4l2-ctl -c video_bitrate=15000000 #Set Video Bitrate v4l2-ctl -c video_bitrate_mode=1 #CBR v4l2-ctl -c video_aspect=1 #4:3 v4l2-ctl --set-fmt-video=width=704,height=576 #704x576 resolution v4l2-ctl --set-input=2 v4l2-ctl --log-status #Show PVR-350 status mkfifo /tmp/video.pes mkfifo /tmp/video.es ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize 1024k /tmp/video.es & esvideo2pes /tmp/video.es > video.pes Here is the script log but ends imcomplete...??? Script started on Sat 02 Jan 2010 19:34:40 GMT ]0;rob@DATV: ~/datvrob@DATV:~/datv$ ./test ioctl: VIDIOC_S_FMT Video input set to 2 (Composite 1) Status Log: [19428.074259] ivtv0: ================= START STATUS CARD #0 ================= [19428.074269] ivtv0: Version: 1.1.0 Card: Hauppauge WinTV PVR-350 [19428.114529] tveeprom 2-0050: Hauppauge model 48135, rev J324, serial# 6815344 [19428.114533] tveeprom 2-0050: tuner model is Philips FM1246 (idx 24, type 1) [19428.114536] tveeprom 2-0050: TV standards PAL(I) (eeprom 0x10) [19428.114539] tveeprom 2-0050: audio processor is MSP4418 (idx 25) [19428.114541] tveeprom 2-0050: decoder processor is SAA7115 (idx 19) [19428.114543] tveeprom 2-0050: has radio, has IR receiver, has no IR transmitter [19428.114553] tuner 2-0061: Tuner mode: analog TV [19428.114556] tuner 2-0061: Frequency: 567.00 MHz [19428.114558] tuner 2-0061: Standard: 0x0000000f [19428.114561] saa7115 2-0021: Audio frequency: 48000 Hz [19428.115889] saa7115 2-0021: Input: Composite 0 [19428.115892] saa7115 2-0021: Video signal: bad [19428.115894] saa7115 2-0021: Frequency: 50 Hz [19428.115896] saa7115 2-0021: Detected format: BW/No color [19428.115898] saa7115 2-0021: Width, Height: 704, 576 [19428.115901] saa7127 2-0044: Standard: 50 Hz [19428.115902] saa7127 2-0044: Input: normal [19428.115904] saa7127 2-0044: Output: S-Video + Composite [19428.115907] saa7127 2-0044: WSS: disabled [19428.115908] saa7127 2-0044: VPS: disabled [19428.115910] saa7127 2-0044: CC: disabled [19428.117028] msp3400 2-0040: MSP4418G-A2 rev1 = 0x0117 rev2 = 0x1242 [19428.117031] msp3400 2-0040: Audio: volume 58880 [19428.117034] msp3400 2-0040: Mode: External input [19428.117035] msp3400 2-0040: Audmode: 0x0001 [19428.117038] msp3400 2-0040: Routing: 0x00222220 (input) 0x00000044 (output) [19428.117040] msp3400 2-0040: ACB: 0x0c00 [19428.117043] ivtv0: Video Input: Composite 1 [19428.117044] ivtv0: Audio Input: Line In 1 [19428.117046] ivtv0: Video Output: S-Video + Composite [19428.117048] ivtv0: Audio Output: A/V Audio Out (Stereo/Bilingual: Stereo/Left) [19428.117050] ivtv0: Output Mode: None [19428.117163] ivtv0: Overlay: Off, Alpha: Global, Pixel Format: ARGB 8:8:8:8 [19428.117165] ivtv0: Tuner: TV [19428.117168] ivtv0: Stream: MPEG-2 Program Stream [19428.117170] ivtv0: VBI Format: No VBI [19428.117173] ivtv0: Video: 704x576, 25 fps [19428.117175] ivtv0: Video: MPEG-2, 4x3, Constant Bitrate, 15000000 [19428.117178] ivtv0: Video: GOP Size 12, 2 B-Frames, No GOP Closure [19428.117180] ivtv0: Audio: 48 kHz, Layer II, 192 kbps, Stereo, No Emphasis, No CRC [19428.117184] ivtv0: Spatial Filter: Manual, Luma 1D Horizontal, Chroma 1D Horizontal, 0 [19428.117187] ivtv0: Temporal Filter: Manual, 0 [19428.117189] ivtv0: Median Filter: Off, Luma [0, 255], Chroma [0, 255] [19428.117191] ivtv0: Status flags: 0x00200080 [19428.117193] ivtv0: Stream encoder MPG: status 0x0000, 0% of 4096 KiB (128 buffers) in use [19428.117196] ivtv0: Stream encoder YUV: status 0x0000, 0% of 2050 KiB (162 buffers) in use [19428.117199] ivtv0: Stream encoder VBI: status 0x0000, 0% of 1049 KiB (41 buffers) in use [19428.117202] ivtv0: Stream encoder PCM: status 0x0000, 0% of 324 KiB (72 buffers) in use [19428.117205] ivtv0: Stream decoder MPG: status 0x0000, 0% of 1024 KiB (16 buffers) in use [19428.117208] ivtv0: Stream decoder VBI: status 0x0000, 0% of 65 KiB (29 buffers) in use [19428.117211] ivtv0: Stream decoder YUV: status 0x0000, 0% of 1063 KiB (21 buffers) in use [19428.117213] ivtv0: Read MPG/VBI: 5242880/0 bytes [19428.117216] ivtv0: ================== END STATUS CARD #0 ================== FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-pp --enable-swscaler --enable- script seesm to miss off the end of what is seen in the terminal.. This is what i see on terminal where it hangs..... FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-pp --enable-swscaler --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg --enable-libgsm --enable-dc1394 --disable-debug --enable-shared --prefix=/usr libavutil version: 1d.49.3.0 libavcodec version: 1d.51.38.0 libavformat version: 1d.51.10.0 built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) Input #0, mpeg, from '/dev/video0': Duration: N/A, bitrate: 15192 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 704x576, 15000 kb/s, 25.00 fps(r) Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 192 kb/s it hangs here forever... Rob _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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In reply to this post by belcampo
belcampo wrote:
> Rob, M0DTS wrote: >> Hi All >> >> It's my first post here after spending a lot of time hunting on the web >> to find a solution to my problem, i did not find a solution. >> >> I'm trying to use ffmpeg to output to a pipe.. >> >> I'm trying to send video elementry stream to a program called >> esvideo2pes which is part of the OpenCaster DVB package. >> >> ffmpeg hangs when i try to do this and does not start encoding. >> >> Script is something like this: >> >> >> # >> >> mkfifo /tmp/video.es >> >> fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video >> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >> 1024k /tmp/video.es & >> >> esvideo2pes /tmp/video.es > video.pes > Your source is DVB, which is ts, and as I understand you want it to be > a pes ? Is that right ? but i guess ffmpeg will still extract the same information. > In the meantime you want to lower the bitrate to 1450k, which for > mpeg2 is very low and quality will be low as a result. Is that what > you want? Yes that's correct, the total mux will need to fit into 1843kbps for the transmitter. > ffmpeg -formats gives among others > DE mpeg MPEG-1 System format > E mpeg1video raw MPEG-1 video > E mpeg2video raw MPEG-2 video > DE mpegts MPEG-2 transport stream format > D mpegtsraw MPEG-2 raw transport stream format > D mpegvideo raw MPEG video > > and AFAIK -f mpeg gives you the wanted pes Yes it should do but i stil have to send this to another program to get it to TS so there is still the need to use the pipe output which is the main problem. The TS i require at the end of this needs to be only one component, the video or audio stream encapsulated as TS but not with all the usual information that is added like pat,pmt,sdt etc.. this is created seperately and added later. >> etc >> etc >> >> >> I hope someone can point me in the right direction, eventually i would >> like to generate both audio and video elementry streams at once and send >> them to fifo's for further processing but we better get one working >> first! >> >> Thanks >> >> Rob >> >> > _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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In reply to this post by Rob, M0DTS
On Jan 02 19:48:35, Rob, M0DTS wrote:
> Jan Stary wrote: >> On Jan 02 18:33:43, Rob, M0DTS wrote: >> >>> On Sat, 2010-01-02 at 19:13 +0100, Jan Stary wrote: >>> >>>> On Jan 02 16:48:04, Rob, M0DTS wrote: >>>> >>>>> Hi All >>>>> >>>>> It's my first post here after spending a lot of time hunting on the web >>>>> to find a solution to my problem, i did not find a solution. >>>>> >>>>> I'm trying to use ffmpeg to output to a pipe.. >>>>> >>>>> I'm trying to send video elementry stream to a program called >>>>> esvideo2pes which is part of the OpenCaster DVB package. >>>>> >>>>> ffmpeg hangs when i try to do this and does not start encoding. >>>>> >>>>> Script is something like this: >>>>> >>>>> >>>> Give us the exact command line. >>>> >>>> >>>>> # >>>>> >>>>> mkfifo /tmp/video.es >>>>> >>>>> fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video >>>>> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >>>>> 1024k /tmp/video.es & >>>>> >>>> There's no "fmpeg", and you don't even specify a format, framerate, >>>> or size for the /dev/video input, so this cannot work (pipes or not); >>>> or this is not your commandline. >>>> >>>> >>>>> esvideo2pes /tmp/video.es > video.pes >>>>> >>>> What is "es", what is "pes", what is esvideo2eps suppose to do, >>>> and why don't you do it in ffmpeg directly? >>>> >>>> >>>>> I hope someone can point me in the right direction, eventually i would >>>>> like to generate both audio and video elementry streams at once and send >>>>> them to fifo's for further processing but we better get one working >>>>> first! >>>>> >>>> What are you trying to do, really? >>>> >>> Ok The /dev/video0 video comes from a hauppauge capture card in MPEG-2 >>> program stream format - see below. >>> >> >> But you need to tell ffmpeg that, which you don't. >> >> >>> The command line is what i'm running (but is ffmpeg yes!) >>> >> >> Please use script(1) to give us the exact commandline(s), >> and ffmpeg's exact response. >> >> >>> There are some v4l2 commands to set the mpeg encoder, see below... >>> Some parameters are set by default so are not included like framerate of >>> 25 for example. >>> >>> v4l2-ctl -c stream_type=0 >>> v4l2-ctl -c video_bitrate=15000000 >>> v4l2-ctl -c video_bitrate_mode=1 >>> v4l2-ctl -c video_aspect=1 >>> v4l2-ctl --set-fmt-video=width=704,height=576 >>> v4l2-ctl --set-input=2 >>> >> >> Whether you use some 3rd party tool to set the capturing card's >> parameters or they are the card's defaults, you still need to >> tell ffmpeg what these are, which you don't. >> >> >>> ffmpeg seems to be the only way i can seperate out the elementry streams >>> from the program stream coming from the device. >>> >> >> What "elementry streams". You use "-an" on a capturing device, >> so there's just one video stream (an mpeg2video stream). >> >> >>> The tools in opencaster >>> do not support program stream input, only elementry streams. >>> >>> What i'm doing is generating some elementry CBR (or as close as >>> possible) streams for the audio and video, >>> >> >> There's no audio; you say "-an" yourself". >> >> >>> they eventually need to be seperate transport streams >>> >> >> Why? >> >> >>> which as far as i'm aware ffmpeg cannot do...? >>> >>> This is why i'm using seperate tools to convert from elementry stream to >>> program stream to transport stream with the associated pid's that I >>> require - without re-compiling i dont think ffmpeg can change pid's >>> either..? >>> >> >> Sorry, I don;t know what "pid"s are in this context, >> and what you require about them ... >> >> > Ok here's the bits i'm currently doing, audio is forgotten about for now > until i get at least video working. > > > Here is the exact shell script i used to start it off.. > If i tell ffmpeg to output to a normal test.mpg file and not a fifo it > encodes without any problem. We still don't know what you are trying to do. Why don't you just save to test.mpg and postprocess it? Why are you using fifo's at all? What's you ultimate goal? > #!/bin/sh > > # Batch file for PVR-350 Card > > > #PVR-150 card settings.. > v4l2-ctl -c audio_layer_ii_bitrate=9 #192Kbps > v4l2-ctl -c audio_stereo_mode=0 #Stereo > v4l2-ctl -c stream_type=0 #MPEG-2 Program Stream=0 > v4l2-ctl -c video_bitrate=15000000 #Set Video Bitrate > v4l2-ctl -c video_bitrate_mode=1 #CBR > v4l2-ctl -c video_aspect=1 #4:3 > v4l2-ctl --set-fmt-video=width=704,height=576 #704x576 resolution > v4l2-ctl --set-input=2 > > v4l2-ctl --log-status #Show PVR-350 status > > mkfifo /tmp/video.pes > mkfifo /tmp/video.es > > > > ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > 1024k /tmp/video.es & > esvideo2pes /tmp/video.es > video.pes What is "esvideo2pes" supposed to do, and why? > > > > Here is the script log but ends imcomplete...??? > > > > Script started on Sat 02 Jan 2010 19:34:40 GMT > ]0;rob@DATV: ~/datvrob@DATV:~/datv$ ./test > ioctl: VIDIOC_S_FMT > Video input set to 2 (Composite 1) > > Status Log: > > [19428.074259] ivtv0: ================= START STATUS CARD #0 > ================= > [19428.074269] ivtv0: Version: 1.1.0 Card: Hauppauge WinTV PVR-350 > [19428.114529] tveeprom 2-0050: Hauppauge model 48135, rev J324, > serial# 6815344 > [19428.114533] tveeprom 2-0050: tuner model is Philips FM1246 (idx > 24, type 1) > [19428.114536] tveeprom 2-0050: TV standards PAL(I) (eeprom 0x10) > [19428.114539] tveeprom 2-0050: audio processor is MSP4418 (idx 25) > [19428.114541] tveeprom 2-0050: decoder processor is SAA7115 (idx > 19) > [19428.114543] tveeprom 2-0050: has radio, has IR receiver, has no IR > transmitter > [19428.114553] tuner 2-0061: Tuner mode: analog TV > [19428.114556] tuner 2-0061: Frequency: 567.00 MHz > [19428.114558] tuner 2-0061: Standard: 0x0000000f > [19428.114561] saa7115 2-0021: Audio frequency: 48000 Hz > [19428.115889] saa7115 2-0021: Input: Composite 0 > [19428.115892] saa7115 2-0021: Video signal: bad > [19428.115894] saa7115 2-0021: Frequency: 50 Hz > [19428.115896] saa7115 2-0021: Detected format: BW/No color > [19428.115898] saa7115 2-0021: Width, Height: 704, 576 > [19428.115901] saa7127 2-0044: Standard: 50 Hz > [19428.115902] saa7127 2-0044: Input: normal > [19428.115904] saa7127 2-0044: Output: S-Video + Composite > [19428.115907] saa7127 2-0044: WSS: disabled > [19428.115908] saa7127 2-0044: VPS: disabled > [19428.115910] saa7127 2-0044: CC: disabled > [19428.117028] msp3400 2-0040: MSP4418G-A2 rev1 = 0x0117 rev2 = > 0x1242 > [19428.117031] msp3400 2-0040: Audio: volume 58880 > [19428.117034] msp3400 2-0040: Mode: External input > [19428.117035] msp3400 2-0040: Audmode: 0x0001 > [19428.117038] msp3400 2-0040: Routing: 0x00222220 (input) > 0x00000044 (output) > [19428.117040] msp3400 2-0040: ACB: 0x0c00 > [19428.117043] ivtv0: Video Input: Composite 1 > [19428.117044] ivtv0: Audio Input: Line In 1 > [19428.117046] ivtv0: Video Output: S-Video + Composite > [19428.117048] ivtv0: Audio Output: A/V Audio Out (Stereo/Bilingual: > Stereo/Left) > [19428.117050] ivtv0: Output Mode: None > [19428.117163] ivtv0: Overlay: Off, Alpha: Global, Pixel Format: > ARGB 8:8:8:8 > [19428.117165] ivtv0: Tuner: TV > [19428.117168] ivtv0: Stream: MPEG-2 Program Stream > [19428.117170] ivtv0: VBI Format: No VBI > [19428.117173] ivtv0: Video: 704x576, 25 fps > [19428.117175] ivtv0: Video: MPEG-2, 4x3, Constant Bitrate, > 15000000 > [19428.117178] ivtv0: Video: GOP Size 12, 2 B-Frames, No GOP > Closure > [19428.117180] ivtv0: Audio: 48 kHz, Layer II, 192 kbps, Stereo, No > Emphasis, No CRC > [19428.117184] ivtv0: Spatial Filter: Manual, Luma 1D Horizontal, > Chroma 1D Horizontal, 0 > [19428.117187] ivtv0: Temporal Filter: Manual, 0 > [19428.117189] ivtv0: Median Filter: Off, Luma [0, 255], Chroma [0, > 255] > [19428.117191] ivtv0: Status flags: 0x00200080 > [19428.117193] ivtv0: Stream encoder MPG: status 0x0000, 0% of 4096 > KiB (128 buffers) in use > [19428.117196] ivtv0: Stream encoder YUV: status 0x0000, 0% of 2050 > KiB (162 buffers) in use > [19428.117199] ivtv0: Stream encoder VBI: status 0x0000, 0% of 1049 > KiB (41 buffers) in use > [19428.117202] ivtv0: Stream encoder PCM: status 0x0000, 0% of 324 > KiB (72 buffers) in use > [19428.117205] ivtv0: Stream decoder MPG: status 0x0000, 0% of 1024 > KiB (16 buffers) in use > [19428.117208] ivtv0: Stream decoder VBI: status 0x0000, 0% of 65 KiB > (29 buffers) in use > [19428.117211] ivtv0: Stream decoder YUV: status 0x0000, 0% of 1063 > KiB (21 buffers) in use > [19428.117213] ivtv0: Read MPG/VBI: 5242880/0 bytes > [19428.117216] ivtv0: ================== END STATUS CARD #0 > ================== > FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et > al. > configuration: --enable-gpl --enable-pp --enable-swscaler --enable- > Where's the "script done" line you your script(1) session? What exactly did you do in script(1) besides running ./test? How did you end script(1)? > script seesm to miss off the end of what is seen in the terminal.. > > > > This is what i see on terminal where it hangs..... > > FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et > al. > configuration: --enable-gpl --enable-pp --enable-swscaler > --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg > --enable-libgsm --enable-dc1394 --disable-debug --enable-shared > --prefix=/usr > libavutil version: 1d.49.3.0 > libavcodec version: 1d.51.38.0 > libavformat version: 1d.51.10.0 > built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) > Input #0, mpeg, from '/dev/video0': > Duration: N/A, bitrate: 15192 kb/s > Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 704x576, 15000 kb/s, > 25.00 fps(r) > Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 192 kb/s > > it hangs here forever... What if you create the fifo first and start reading from it _before_ running ffmpeg? That works for me. The way it is now, ffmpeg is supposed to write into a pipe that no-one is reading from. I don't know how exactly fifo's work inside (your) kernel, but I would guess there's a finite buffer that gets filled quickly in a situation like this. Then, ffmpeg cannot write any further. I guess. mkfifo /tmp/fifo cat /tmp/fifo > /tmp/output.mpg # or whatever ffmpeg -i /dev/video0 /tmp/fifo # fill in the options But first, please, let us know already what you are really doing. _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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In reply to this post by Rob, M0DTS
>>> I'm trying to use ffmpeg to output to a pipe..
>>> >>> I'm trying to send video elementry stream to a program called >>> esvideo2pes which is part of the OpenCaster DVB package. >>> >>> ffmpeg hangs when i try to do this and does not start encoding. >>> >>> Script is something like this: >>> >>> # >>> >>> mkfifo /tmp/video.es >>> >>> fmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video >>> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >>> 1024k /tmp/video.es & >>> >>> esvideo2pes /tmp/video.es > video.pes >> Your source is DVB, which is ts, and as I understand you want it to be >> a pes ? Is that right ? > Not exactly, it'a an anlogue card but provides Program Stream not DVB TS > but i guess ffmpeg will still extract the same information. >> In the meantime you want to lower the bitrate to 1450k, which for >> mpeg2 is very low and quality will be low as a result. Is that what >> you want? > Yes that's correct, the total mux will need to fit into 1843kbps for the > transmitter. >> ffmpeg -formats gives among others >> DE mpeg MPEG-1 System format >> E mpeg1video raw MPEG-1 video >> E mpeg2video raw MPEG-2 video >> DE mpegts MPEG-2 transport stream format >> D mpegtsraw MPEG-2 raw transport stream format >> D mpegvideo raw MPEG video >> >> and AFAIK -f mpeg gives you the wanted pes > > Yes it should do but i stil have to send this to another program to get > it to TS so there is still the need to use the pipe output which is the > main problem. Why do you need to use pipes? > The TS i require at the end of this needs to be only one component, the > video or audio stream encapsulated as TS but not with all the usual > information that is added like pat,pmt,sdt etc.. this is created > seperately and added later. "later" meaning that you don't need to do it in realtime? Why don't you just save a mpegts stream as above and separate the audio and video later? ffmpeg -i /dev/video0 -f mpegts capture.mpg ffmpeg -i capture.mpg -an -f mpegts (...) video.mpg ffmpeg -i capture.mpg -vn -f mpegts (...) audio.mpg _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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In reply to this post by Jan Stary
>> ncodes without any problem. >> > > We still don't know what you are trying to do. > Why don't you just save to test.mpg and postprocess it? > Why are you using fifo's at all? What's you ultimate goal? > > > >> #!/bin/sh >> >> # Batch file for PVR-350 Card >> >> >> #PVR-150 card settings.. >> v4l2-ctl -c audio_layer_ii_bitrate=9 #192Kbps >> v4l2-ctl -c audio_stereo_mode=0 #Stereo >> v4l2-ctl -c stream_type=0 #MPEG-2 Program Stream=0 >> v4l2-ctl -c video_bitrate=15000000 #Set Video Bitrate >> v4l2-ctl -c video_bitrate_mode=1 #CBR >> v4l2-ctl -c video_aspect=1 #4:3 >> v4l2-ctl --set-fmt-video=width=704,height=576 #704x576 resolution >> v4l2-ctl --set-input=2 >> >> v4l2-ctl --log-status #Show PVR-350 status >> >> mkfifo /tmp/video.pes >> mkfifo /tmp/video.es >> >> >> >> ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video >> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >> 1024k /tmp/video.es & >> esvideo2pes /tmp/video.es > video.pes >> > > What is "esvideo2pes" supposed to do, and why? > - i think, i'm just following the OpenCaster manual with it's 'how to encode video using ffmpeg' section! > >> >> Here is the script log but ends imcomplete...??? >> >> >> >> Script started on Sat 02 Jan 2010 19:34:40 GMT >> ]0;rob@DATV: ~/datvrob@DATV:~/datv$ ./test >> ioctl: VIDIOC_S_FMT >> Video input set to 2 (Composite 1) >> >> Status Log: >> >> [19428.074259] ivtv0: ================= START STATUS CARD #0 >> ================= >> [19428.074269] ivtv0: Version: 1.1.0 Card: Hauppauge WinTV PVR-350 >> [19428.114529] tveeprom 2-0050: Hauppauge model 48135, rev J324, >> serial# 6815344 >> [19428.114533] tveeprom 2-0050: tuner model is Philips FM1246 (idx >> 24, type 1) >> [19428.114536] tveeprom 2-0050: TV standards PAL(I) (eeprom 0x10) >> [19428.114539] tveeprom 2-0050: audio processor is MSP4418 (idx 25) >> [19428.114541] tveeprom 2-0050: decoder processor is SAA7115 (idx >> 19) >> [19428.114543] tveeprom 2-0050: has radio, has IR receiver, has no IR >> transmitter >> [19428.114553] tuner 2-0061: Tuner mode: analog TV >> [19428.114556] tuner 2-0061: Frequency: 567.00 MHz >> [19428.114558] tuner 2-0061: Standard: 0x0000000f >> [19428.114561] saa7115 2-0021: Audio frequency: 48000 Hz >> [19428.115889] saa7115 2-0021: Input: Composite 0 >> [19428.115892] saa7115 2-0021: Video signal: bad >> [19428.115894] saa7115 2-0021: Frequency: 50 Hz >> [19428.115896] saa7115 2-0021: Detected format: BW/No color >> [19428.115898] saa7115 2-0021: Width, Height: 704, 576 >> [19428.115901] saa7127 2-0044: Standard: 50 Hz >> [19428.115902] saa7127 2-0044: Input: normal >> [19428.115904] saa7127 2-0044: Output: S-Video + Composite >> [19428.115907] saa7127 2-0044: WSS: disabled >> [19428.115908] saa7127 2-0044: VPS: disabled >> [19428.115910] saa7127 2-0044: CC: disabled >> [19428.117028] msp3400 2-0040: MSP4418G-A2 rev1 = 0x0117 rev2 = >> 0x1242 >> [19428.117031] msp3400 2-0040: Audio: volume 58880 >> [19428.117034] msp3400 2-0040: Mode: External input >> [19428.117035] msp3400 2-0040: Audmode: 0x0001 >> [19428.117038] msp3400 2-0040: Routing: 0x00222220 (input) >> 0x00000044 (output) >> [19428.117040] msp3400 2-0040: ACB: 0x0c00 >> [19428.117043] ivtv0: Video Input: Composite 1 >> [19428.117044] ivtv0: Audio Input: Line In 1 >> [19428.117046] ivtv0: Video Output: S-Video + Composite >> [19428.117048] ivtv0: Audio Output: A/V Audio Out (Stereo/Bilingual: >> Stereo/Left) >> [19428.117050] ivtv0: Output Mode: None >> [19428.117163] ivtv0: Overlay: Off, Alpha: Global, Pixel Format: >> ARGB 8:8:8:8 >> [19428.117165] ivtv0: Tuner: TV >> [19428.117168] ivtv0: Stream: MPEG-2 Program Stream >> [19428.117170] ivtv0: VBI Format: No VBI >> [19428.117173] ivtv0: Video: 704x576, 25 fps >> [19428.117175] ivtv0: Video: MPEG-2, 4x3, Constant Bitrate, >> 15000000 >> [19428.117178] ivtv0: Video: GOP Size 12, 2 B-Frames, No GOP >> Closure >> [19428.117180] ivtv0: Audio: 48 kHz, Layer II, 192 kbps, Stereo, No >> Emphasis, No CRC >> [19428.117184] ivtv0: Spatial Filter: Manual, Luma 1D Horizontal, >> Chroma 1D Horizontal, 0 >> [19428.117187] ivtv0: Temporal Filter: Manual, 0 >> [19428.117189] ivtv0: Median Filter: Off, Luma [0, 255], Chroma [0, >> 255] >> [19428.117191] ivtv0: Status flags: 0x00200080 >> [19428.117193] ivtv0: Stream encoder MPG: status 0x0000, 0% of 4096 >> KiB (128 buffers) in use >> [19428.117196] ivtv0: Stream encoder YUV: status 0x0000, 0% of 2050 >> KiB (162 buffers) in use >> [19428.117199] ivtv0: Stream encoder VBI: status 0x0000, 0% of 1049 >> KiB (41 buffers) in use >> [19428.117202] ivtv0: Stream encoder PCM: status 0x0000, 0% of 324 >> KiB (72 buffers) in use >> [19428.117205] ivtv0: Stream decoder MPG: status 0x0000, 0% of 1024 >> KiB (16 buffers) in use >> [19428.117208] ivtv0: Stream decoder VBI: status 0x0000, 0% of 65 KiB >> (29 buffers) in use >> [19428.117211] ivtv0: Stream decoder YUV: status 0x0000, 0% of 1063 >> KiB (21 buffers) in use >> [19428.117213] ivtv0: Read MPG/VBI: 5242880/0 bytes >> [19428.117216] ivtv0: ================== END STATUS CARD #0 >> ================== >> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et >> al. >> configuration: --enable-gpl --enable-pp --enable-swscaler --enable- >> >> > > Where's the "script done" line you your script(1) session? > What exactly did you do in script(1) besides running ./test? > How did you end script(1)? > before, linux newbie for only 3 weeks!) the data went into the file so i did ctrl-c in the termianl and killed ffmpeg. > >> script seesm to miss off the end of what is seen in the terminal.. >> >> >> >> This is what i see on terminal where it hangs..... >> >> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et >> al. >> configuration: --enable-gpl --enable-pp --enable-swscaler >> --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg >> --enable-libgsm --enable-dc1394 --disable-debug --enable-shared >> --prefix=/usr >> libavutil version: 1d.49.3.0 >> libavcodec version: 1d.51.38.0 >> libavformat version: 1d.51.10.0 >> built on Mar 16 2009 21:19:49, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3) >> Input #0, mpeg, from '/dev/video0': >> Duration: N/A, bitrate: 15192 kb/s >> Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 704x576, 15000 kb/s, >> 25.00 fps(r) >> Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 192 kb/s >> >> it hangs here forever... >> > > What if you create the fifo first and start reading from it > _before_ running ffmpeg? That works for me. The way it is now, > ffmpeg is supposed to write into a pipe that no-one is reading from. > I don't know how exactly fifo's work inside (your) kernel, but I would > guess there's a finite buffer that gets filled quickly in a situation > like this. Then, ffmpeg cannot write any further. I guess. > > mkfifo /tmp/fifo > cat /tmp/fifo > /tmp/output.mpg # or whatever > ffmpeg -i /dev/video0 /tmp/fifo # fill in the options > > But first, please, let us know already what you are really doing. > > > > I've trimmed the post a bit as it was getting a bit too long! This processing with ffmpeg needs to be done in real-time as that's the idea of a DVB transmitter like digital tv etc.. of course there will be some delay of a second or so from real life but that's ok I'm trying to create a reasonably compatable DVB-S Transport Stream which needs to be CBR (at 1843kbps for my system) ffmpeg can make TS but there are no options to what goes into the TS, i need to change parts of the TS to be compatable with DVB format and that's not possible as far as i'm aware without recompiling ffmpeg with the changes in the ts muxer code. (way over my head) This is why i'm trying to do it with other programs using OpenCaster software tools where it is designed to do this sort of thing and is easily configured. The only reason i'm using ffmpeg is to split the program stream from the hardware into seperate audio and video mpeg elementry streams. The reason i'm using fifo's is because i need to pipe the data between the programs in real time with no post processing. I can post process some test files with ffmpeg and use the opencatser tools to get the desired output but making it work in real time seems to be tricky, the only part not playing ball is the ffmpeg pipe, hence the questions about pipes and fifo. Does that make any sense.... :-) Rob _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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Rob, M0DTS wrote:
> >>> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et >>> al. >>> configuration: --enable-gpl --enable-pp --enable-swscaler --enable- Googling ffmpeg pipe named-pipe gave me this http://lists.mplayerhq.hu/pipermail/ffmpeg-user/2008-February/014147.html Maybe it helps. Further your version of ffmpeg is more then 2 years old. Support on this list is only for recent versions. >>> >>> >> >> Where's the "script done" line you your script(1) session? >> What exactly did you do in script(1) besides running ./test? <snip> > > Rob > > > _______________________________________________ > ffmpeg-user mailing list > [hidden email] > https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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belcampo wrote:
> Rob, M0DTS wrote: >> >>>> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice >>>> Bellard, et >>>> al. >>>> configuration: --enable-gpl --enable-pp --enable-swscaler --enable- > Googling ffmpeg pipe named-pipe gave me this > http://lists.mplayerhq.hu/pipermail/ffmpeg-user/2008-February/014147.html > Maybe it helps. Thanks for that, unfortunately it made no difference with the extensions as i suspected. All the things i found on the net is about input pipes on ffmpeg which seem to work fine but nothing related to output pipes. Unfortunately i cant find any newer ffmpeg packages in my installation (ubuntu 8.04) so i guess it means building a new version to see if the problem still exists, building from code is way over my head at present. Thanks for the pointers.. > Further your version of ffmpeg is more then 2 years old. Support on > this list is only for recent versions. >>>> >>>> >>> >>> Where's the "script done" line you your script(1) session? >>> What exactly did you do in script(1) besides running ./test? > <snip> >> >> Rob >> >> >> _______________________________________________ >> ffmpeg-user mailing list >> [hidden email] >> https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user > > _______________________________________________ > ffmpeg-user mailing list > [hidden email] > https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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On 01/03/2010 04:52 AM, Rob, M0DTS wrote:
> Unfortunately i cant find any newer ffmpeg packages in my installation > (ubuntu 8.04) so i guess it means building a new version to see if the > problem still exists, building from code is way over my head at present. Building ffmpeg from code really isn't that hard. I do it on a frequent basis with Fedora. For starters, just checkout the code using SVN (make sure to install SVN if you don't have it on your system already): svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg The above command will checkout the latest version of ffmpeg's code (i.e., "trunk") into a directory "ffmpeg" below your current directory. Once the code is done downloading, you can follow the standard build routine: ./configure (you may tweak this command by appending --enable-*** for each feature you need in your custom build of ffmpeg) make make install (run this last step as root or using sudo) As an example, to get all the features I want, I run ./configure with the following parameters: ./configure --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-avfilter --enable-avfilter-lavf --enable-x11grab --enable-runtime-cpudetect --enable-libdc1394 --enable-libdirac --enable-libfaac --enable-libfaad --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags="-I/usr/local/include" --extra-ldflags="-L/usr/local/lib" To find out what each step is, just run ./configure --help and it will give you a listing explaining each parameter. Note: You may have to install development packages for each feature if they're not already available on your system. For example, to enable MP3 support, you'll need the LAME development packages (I don't know what the name for that is on Ubuntu - on Fedora it's lame-devel). -- Basil Mohamed Gohar [hidden email] http://www.basilgohar.com/blog basilgohar on irc.freenode.net GPG Key Fingerprint: 5AF4B362 _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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Basil Mohamed Gohar wrote:
> On 01/03/2010 04:52 AM, Rob, M0DTS wrote: > >> Unfortunately i cant find any newer ffmpeg packages in my installation >> (ubuntu 8.04) so i guess it means building a new version to see if the >> problem still exists, building from code is way over my head at present. >> > Building ffmpeg from code really isn't that hard. I do it on a frequent > basis with Fedora. > > For starters, just checkout the code using SVN (make sure to install SVN > if you don't have it on your system already): > > svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg > > The above command will checkout the latest version of ffmpeg's code > (i.e., "trunk") into a directory "ffmpeg" below your current directory. > > Once the code is done downloading, you can follow the standard build > routine: > > ./configure (you may tweak this command by appending --enable-*** for > each feature you need in your custom build of ffmpeg) > make > make install (run this last step as root or using sudo) > > As an example, to get all the features I want, I run ./configure with > the following parameters: > > ./configure --enable-gpl --enable-version3 --enable-nonfree > --enable-postproc --enable-avfilter --enable-avfilter-lavf > --enable-x11grab --enable-runtime-cpudetect --enable-libdc1394 > --enable-libdirac --enable-libfaac --enable-libfaad --enable-libgsm > --enable-libmp3lame --enable-libopenjpeg --enable-libschroedinger > --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 > --enable-libxvid --extra-cflags="-I/usr/local/include" > --extra-ldflags="-L/usr/local/lib" > > To find out what each step is, just run ./configure --help and it will > give you a listing explaining each parameter. > > Note: You may have to install development packages for each feature if > they're not already available on your system. For example, to enable > MP3 support, you'll need the LAME development packages (I don't know > what the name for that is on Ubuntu - on Fedora it's lame-devel). > > I ran configure with default settings (temporarily) then make and make install without any problem, i was quite surprised! Unfortunately it did not make any difference to my problem and ffmpeg still hangs when it's trying to write to fifo.... Interestingly if i tell ffmpeg to send to standard output and then redirect that to the fifo it works ok for video or audio on it's own. This seems to work: mkfifo /tmp/video.es ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize 1024k - > /tmp/video.es But this will not let me output both audio and video streams seperately at the same time as there's only one standard output right? Rob _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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> Unfortunately it did not make any difference to my problem and ffmpeg
> still hangs when it's trying to write to fifo.... I think ffmpeg doesn't "hang", it just has nowhere to write, because nobody is reading from the other end of the pipe. > Interestingly if i tell ffmpeg to send to standard output and then > redirect that to the fifo it works ok for video or audio on it's own. Again (and always): give us the exact commandline and the exact response, preferably with script(1). > This seems to work: > mkfifo /tmp/video.es > > ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > 1024k - > /tmp/video.es Speculation: here ffmpeg is writing to stdout and nothing can stop it; the fact that no-one is reading from the other end of the pipe (and the data has to be stored somewhere until somebody does) is someone else's (kernel's?) problem now. Right? > But this will not let me output both audio and video streams seperately > at the same time as there's only one standard output right? You can duplicate the data with tee(1): $ whatis tee tee (1) - pipe fitting _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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On Sun, 2010-01-03 at 13:09 +0100, Jan Stary wrote:
> > Unfortunately it did not make any difference to my problem and ffmpeg > > still hangs when it's trying to write to fifo.... > > I think ffmpeg doesn't "hang", it just has nowhere to write, > because nobody is reading from the other end of the pipe. > > > Interestingly if i tell ffmpeg to send to standard output and then > > redirect that to the fifo it works ok for video or audio on it's own. > > Again (and always): give us the exact commandline and > the exact response, preferably with script(1). command prompt back up after running the commands i have to ctrl-c to stop it running before i can exit script. See the end of email for the script log. The commands are the same as the earlier described 'test' shell script. > > > This seems to work: > > mkfifo /tmp/video.es > > > > ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > > 1024k - > /tmp/video.es > > Speculation: here ffmpeg is writing to stdout and nothing can stop it; > the fact that no-one is reading from the other end of the pipe (and the > data has to be stored somewhere until somebody does) is someone else's > (kernel's?) problem now. Right? If i use other programs to write to the same fifo and use the esvideo2pes program to read from the fifo it works no problem. It's only when ffmpeg writes to the fifo that nothing happens, that's what had led me to think it's a problem with ffmpeg output and not the other program that i'm using. > > > But this will not let me output both audio and video streams seperately > > at the same time as there's only one standard output right? > > You can duplicate the data with tee(1): > > $ whatis tee > tee (1) - pipe fitting Ok that maybe useful, i'll read up on that tool. > > _______________________________________________ Here's the latest script log.... Script started on Sun 03 Jan 2010 12:42:23 GMT ]0;rob@DATV: ~/datvrob@DATV:~/datv$ ./test ioctl: VIDIOC_S_FMT Video input set to 2 (Composite 1) Status Log: [ 3628.372549] ivtv0: ================= START STATUS CARD #0 ================= [ 3628.372559] ivtv0: Version: 1.1.0 Card: Hauppauge WinTV PVR-350 [ 3628.412778] tveeprom 2-0050: Hauppauge model 48135, rev J324, serial# 6815344 [ 3628.412782] tveeprom 2-0050: tuner model is Philips FM1246 (idx 24, type 1) [ 3628.412786] tveeprom 2-0050: TV standards PAL(I) (eeprom 0x10) [ 3628.412788] tveeprom 2-0050: audio processor is MSP4418 (idx 25) [ 3628.412791] tveeprom 2-0050: decoder processor is SAA7115 (idx 19) [ 3628.412794] tveeprom 2-0050: has radio, has IR receiver, has no IR transmitter [ 3628.416996] tuner 2-0061: Tuner mode: analog TV [ 3628.417005] tuner 2-0061: Frequency: 567.00 MHz [ 3628.417007] tuner 2-0061: Standard: 0x0000000f [ 3628.417416] saa7115 2-0021: Audio frequency: 48000 Hz [ 3628.418867] saa7115 2-0021: Input: Composite 0 [ 3628.418869] saa7115 2-0021: Video signal: bad [ 3628.418871] saa7115 2-0021: Frequency: 50 Hz [ 3628.418873] saa7115 2-0021: Detected format: BW/No color [ 3628.418874] saa7115 2-0021: Width, Height: 704, 576 [ 3628.419411] saa7127 2-0044: Standard: 50 Hz [ 3628.419413] saa7127 2-0044: Input: normal [ 3628.419415] saa7127 2-0044: Output: S-Video + Composite [ 3628.419416] saa7127 2-0044: WSS: disabled [ 3628.419418] saa7127 2-0044: VPS: disabled [ 3628.419419] saa7127 2-0044: CC: disabled [ 3628.421017] msp3400 2-0040: MSP4418G-A2 rev1 = 0x0117 rev2 = 0x1242 [ 3628.421020] msp3400 2-0040: Audio: volume 58880 [ 3628.421022] msp3400 2-0040: Mode: External input [ 3628.421023] msp3400 2-0040: Audmode: 0x0001 [ 3628.421025] msp3400 2-0040: Routing: 0x00222220 (input) 0x00000044 (output) [ 3628.421027] msp3400 2-0040: ACB: 0x0c00 [ 3628.421504] ivtv0: Video Input: Composite 1 [ 3628.421507] ivtv0: Audio Input: Line In 1 [ 3628.421508] ivtv0: Video Output: S-Video + Composite [ 3628.421510] ivtv0: Audio Output: A/V Audio Out (Stereo/Bilingual: Stereo/Left) [ 3628.421512] ivtv0: Output Mode: None [ 3628.421626] ivtv0: Overlay: Off, Alpha: Global, Pixel Format: ARGB 8:8:8:8 [ 3628.421648] ivtv0: Tuner: TV [ 3628.421650] ivtv0: Stream: MPEG-2 Program Stream [ 3628.421652] ivtv0: VBI Format: No VBI [ 3628.421654] ivtv0: Video: 704x576, 25 fps [ 3628.421656] ivtv0: Video: MPEG-2, 4x3, Constant Bitrate, 15000000 [ 3628.421658] ivtv0: Video: GOP Size 12, 2 B-Frames, GOP Closure [ 3628.421660] ivtv0: Audio: 48 kHz, Layer II, 192 kbps, Stereo, No Emphasis, No CRC [ 3628.421663] ivtv0: Spatial Filter: Manual, Luma 1D Horizontal, Chroma 1D Horizontal, 0 [ 3628.421665] ivtv0: Temporal Filter: Manual, 0 [ 3628.421667] ivtv0: Median Filter: Off, Luma [0, 255], Chroma [0, 255] [ 3628.421669] ivtv0: Status flags: 0x00200080 [ 3628.421671] ivtv0: Stream encoder MPG: status 0x0000, 0% of 4096 KiB (128 buffers) in use [ 3628.421673] ivtv0: Stream encoder YUV: status 0x0000, 0% of 2050 KiB (162 buffers) in use [ 3628.421676] ivtv0: Stream encoder VBI: status 0x0000, 0% of 1049 KiB (41 buffers) in use [ 3628.421678] ivtv0: Stream encoder PCM: status 0x0000, 0% of 324 KiB (72 buffers) in use [ 3628.421681] ivtv0: Stream decoder MPG: status 0x0000, 0% of 1024 KiB (16 buffers) in use [ 3628.421683] ivtv0: Stream decoder VBI: status 0x0000, 0% of 65 KiB (29 buffers) in use [ 3628.421685] ivtv0: Stream decoder YUV: status 0x0000, 0% of 1063 KiB (21 buffers) in use [ 3628.421688] ivtv0: Read MPG/VBI: 5242880/0 bytes [ 3628.421689] ivtv0: ================== END STATUS CARD #0 ================== FFmpeg version SVN-r21004, Copyright (c) 2000-2010 Fabrice Bellard, et al. built on Jan 3 2010 10:54:58 with gcc 4.2.4 (Ubuntu 4.2.4-1ubuntu4) configuration: libavutil 50. 7. 0 / 50. 7. 0 libavcodec 52.45. 0 / 52.45. 0 libavformat 52.46. 0 / 52.46. 0 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0. 7. 2 / 0. 7. 2 [mpeg @ 0xfe33d0]MAX_READ_SIZE:5000000 reached [mpeg @ 0xfe33d0]Estimating duration from bitrate, this may be inaccurate Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 25.00 (25/1) Input #0, mpeg, from '/dev/video0': Duration: N/A, start: 0.276622, bitrate: 15192 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 704x576 [PAR 12:11 DAR 4:3], 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, 2 channels, s16, 192 kb/s ]0;rob@DATV: ~/datvrob@DATV:~/datv$ exit exit Script done on Sun 03 Jan 2010 12:42:37 GMT _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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> > > This seems to work:
> > > mkfifo /tmp/video.es > > > > > > ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video > > > -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize > > > 1024k - > /tmp/video.es > > > > Speculation: here ffmpeg is writing to stdout and nothing can stop it; > > the fact that no-one is reading from the other end of the pipe (and the > > data has to be stored somewhere until somebody does) is someone else's > > (kernel's?) problem now. Right? > getting a little too complicated now! > If i use other programs to write to the same fifo and use the > esvideo2pes program to read from the fifo it works no problem. > It's only when ffmpeg writes to the fifo that nothing happens, that's > what had led me to think it's a problem with ffmpeg output and not the > other program that i'm using. Does this also happen with ffmpeg writing to -, being redirected to the fifo, and your other program (esvideo2pes) reading from the pipe? _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
Re: ffmpeg and pipe output
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Jan Stary wrote:
>>>> This seems to work: >>>> mkfifo /tmp/video.es >>>> >>>> ffmpeg -i /dev/video0 -deinterlace -an -vcodec mpeg2video -f mpeg2video >>>> -bf 2 -b 1450k -maxrate 1450k -minrate 1450k -bufsize >>>> 1024k - > /tmp/video.es >>>> >>> Speculation: here ffmpeg is writing to stdout and nothing can stop it; >>> the fact that no-one is reading from the other end of the pipe (and the >>> data has to be stored somewhere until somebody does) is someone else's >>> (kernel's?) problem now. Right? >>> >> getting a little too complicated now! >> If i use other programs to write to the same fifo and use the >> esvideo2pes program to read from the fifo it works no problem. >> It's only when ffmpeg writes to the fifo that nothing happens, that's >> what had led me to think it's a problem with ffmpeg output and not the >> other program that i'm using. >> > > Does this also happen with ffmpeg writing to -, being redirected > to the fifo, and your other program (esvideo2pes) reading from the pipe? > fifo and then to the other program. _______________________________________________ ffmpeg-user mailing list [hidden email] https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user |
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