Confusion about vorbis audio for mkv output

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Confusion about vorbis audio for mkv output

Ulf Zibis-2
Hi,

Using the following command I get an error:

The encoder 'vorbis' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.

I'm also missing '-strict -2' at https://ffmpeg.org/ffmpeg-all.html#Codec-Options

$ ~/Projects/ffmpeg/dev_2/ffmpeg -i INPUT_2.mkv -i Musik.mkv -map 0:v -map 1:a -c:v copy -c:a vorbis INPUT_3.mkv
ffmpeg version N-101141-g8331eb058d Copyright (c) 2000-2021 the FFmpeg developers
   built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
   configuration:
   libavutil      56. 65.100 / 56. 65.100
   libavcodec     58.123.100 / 58.123.100
   libavformat    58. 67.100 / 58. 67.100
   libavdevice    58. 12.100 / 58. 12.100
   libavfilter     7.107.100 /  7.107.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
Input #0, matroska,webm, from 'INPUT_2.mkv':
   Metadata:
     SOURCE_TYPE     : dvd
     ENCODER         : Lavf58.67.100
   Duration: 01:31:56.13, start: 0.000000, bitrate: 114 kb/s
   Chapters:
     Chapter #0:0: start 0.000000, end 10.911556
     Chapter #0:1: start 10.911556, end 819.225778
     Chapter #0:2: start 819.225778, end 1839.369956
     Chapter #0:3: start 1839.369956, end 2689.490133
     Chapter #0:4: start 2689.490133, end 3289.574978
     Chapter #0:5: start 3289.574978, end 4584.758089
     Chapter #0:6: start 4584.758089, end 5516.019689
   Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p(progressive), 16x16 [SAR 16:15 DAR 16:15], 25 fps, 25 tbr, 1k tbn, 25 tbc (default)
     Metadata:
       ENCODER         : Lavc58.123.100 mpeg4
       DURATION        : 01:31:56.120000000
   Stream #0:1(deu): Audio: vorbis, 48000 Hz, stereo, fltp (default)
     Metadata:
       LANGUAGE-ISO639_2: deu
       LANGUAGE-SIMPLE : Deutsch
       LANGUAGE-DESCRIPTION: Deutsch
       ENCODER         : Lavc58.18.100 libvorbis
       DURATION        : 01:31:56.130000000
[matroska,webm @ 0x5556cb1e5a80] Could not find codec parameters for stream 0 (Video: h264, none, 426x240): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #1, matroska,webm, from Musik.mkv':
   Metadata:
     ENCODER         : Lavf58.16.100
   Duration: 01:56:18.94, start: -0.007000, bitrate: 108 kb/s
   Stream #1:0: Video: h264, none, 426x240, 1k tbr, 1k tbn, 2k tbc (default)
     Metadata:
       HANDLER_NAME    : ISO Media file produced by Google Inc. Created on: 04/18/2020.
       DURATION        : 00:00:00.000000000
   Stream #1:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
     Metadata:
       DURATION        : 01:56:18.941000000
File 'INPUT_3.mkv' already exists. Overwrite? [y/N] y
Stream mapping:
   Stream #0:0 -> #0:0 (copy)
   Stream #1:1 -> #0:1 (opus (native) -> vorbis (native))
Press [q] to stop, [?] for help
[vorbis @ 0x5556cb205880] The encoder 'vorbis' is experimental but experimental codecs are not enabled, add '-strict -2' if you want to use it.
Conversion failed!

But when I transcode a mpg video to mkv, then automatically a vorbis audio stream is created, even it is stated "experimental":

$ ~/Projects/ffmpeg/dev_2/ffmpeg -i Kiosk\ Mozartstr.\ -\ Andreas.mpg Kiosk\ Mozartstr.\ -\ Andreas.mkv
ffmpeg version N-101141-g8331eb058d Copyright (c) 2000-2021 the FFmpeg developers
   built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
   configuration:
   libavutil      56. 65.100 / 56. 65.100
   libavcodec     58.123.100 / 58.123.100
   libavformat    58. 67.100 / 58. 67.100
   libavdevice    58. 12.100 / 58. 12.100
   libavfilter     7.107.100 /  7.107.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
Input #0, mpeg, from 'Kiosk Mozartstr. - Andreas.mpg':
   Duration: 00:26:00.49, start: 0.529989, bitrate: 1793 kb/s
   Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 352x288 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Side data:
       cpb: bitrate max/min/avg: 9578800/0/0 buffer size: 1835008 vbv_delay: N/A
   Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s
File 'Kiosk Mozartstr. - Andreas.mkv' already exists. Overwrite? [y/N] y
Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg4 (native))
   Stream #0:1 -> #0:1 (mp2 (native) -> ac3 (native))
Press [q] to stop, [?] for help
Output #0, matroska, to 'Kiosk Mozartstr. - Andreas.mkv':
   Metadata:
     encoder         : Lavf58.67.100
   Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p(tv, bt470bg, progressive), 352x288 [SAR 12:11 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 1k tbn
     Metadata:
       encoder         : Lavc58.123.100 mpeg4
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
   Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 192 kb/s
     Metadata:
       encoder         : Lavc58.123.100 ac3
frame=18039 fps=439 q=31.0 Lsize=   35175kB time=00:12:01.52 bitrate= 399.4kbits/s speed=17.6x
video:17939kB audio:16897kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.974401%
Exiting normally, received signal 2.
ich@T500:/media/ich/DVDs$ ffmpeg -i Kiosk\ Mozartstr.\ -\ Andreas.mpg Kiosk\ Mozartstr.\ -\ Andreas.mkv
ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2020 the FFmpeg developers
   built with gcc 8 (Debian 8.3.0-6)
   configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
   libavutil      56. 51.100 / 56. 51.100
   libavcodec     58. 91.100 / 58. 91.100
   libavformat    58. 45.100 / 58. 45.100
   libavdevice    58. 10.100 / 58. 10.100
   libavfilter     7. 85.100 /  7. 85.100
   libswscale      5.  7.100 /  5.  7.100
   libswresample   3.  7.100 /  3.  7.100
   libpostproc    55.  7.100 / 55.  7.100
Input #0, mpeg, from 'Kiosk Mozartstr. - Andreas.mpg':
   Duration: 00:26:00.49, start: 0.529989, bitrate: 1793 kb/s
     Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, progressive), 352x288 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
     Side data:
       cpb: bitrate max/min/avg: 9578800/0/0 buffer size: 1835008 vbv_delay: N/A
     Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s
File 'Kiosk Mozartstr. - Andreas.mkv' already exists. Overwrite? [y/N] y
Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
   Stream #0:1 -> #0:1 (mp2 (native) -> vorbis (libvorbis))
Press [q] to stop, [?] for help
[libx264 @ 0x66c8ac0] using SAR=12/11
[libx264 @ 0x66c8ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
[libx264 @ 0x66c8ac0] profile High, level 1.3, 4:2:0, 8-bit
[libx264 @ 0x66c8ac0] 264 - core 161 r3018 db0d417 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, matroska, to 'Kiosk Mozartstr. - Andreas.mkv':
   Metadata:
     encoder         : Lavf58.45.100
     Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 352x288 [SAR 12:11 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc
     Metadata:
       encoder         : Lavc58.91.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
     Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 48000 Hz, stereo, fltp
     Metadata:
       encoder         : Lavc58.91.100 libvorbis
frame=39012 fps= 50 q=-1.0 Lsize=  142440kB time=00:26:00.36 bitrate= 747.8kbits/s speed=2.02x
video:126928kB audio:14674kB subtitle:0kB other streams:0kB global headers:4kB muxing overhead: 0.591646%
[libx264 @ 0x66c8ac0] frame I:303   Avg QP:22.95  size: 18951
[libx264 @ 0x66c8ac0] frame P:10864 Avg QP:25.32  size:  7268
[libx264 @ 0x66c8ac0] frame B:27845 Avg QP:28.91  size:  1626
[libx264 @ 0x66c8ac0] consecutive B-frames:  1.9%  3.2% 16.8% 78.1%
[libx264 @ 0x66c8ac0] mb I  I16..4:  2.3% 87.0% 10.7%
[libx264 @ 0x66c8ac0] mb P  I16..4:  0.5%  8.9%  1.0%  P16..4: 41.9% 28.0% 18.0%  0.0%  0.0%    skip: 1.7%
[libx264 @ 0x66c8ac0] mb B  I16..4:  0.1%  1.0%  0.1%  B16..8: 48.1%  7.8%  2.1%  direct: 7.6%  skip:33.4%  L0:36.1% L1:39.8% BI:24.1%
[libx264 @ 0x66c8ac0] 8x8 transform intra:86.3% inter:80.9%
[libx264 @ 0x66c8ac0] coded y,uvDC,uvAC intra: 87.5% 88.2% 46.9% inter: 32.6% 47.2% 4.6%
[libx264 @ 0x66c8ac0] i16 v,h,dc,p: 26% 32% 12% 30%
[libx264 @ 0x66c8ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 19% 26% 5%  6%  6%  6%  6%  8%
[libx264 @ 0x66c8ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 20% 13% 6%  8%  8%  9%  7%  8%
[libx264 @ 0x66c8ac0] i8c dc,h,v,p: 56% 19% 17%  8%
[libx264 @ 0x66c8ac0] Weighted P-Frames: Y:4.4% UV:1.8%
[libx264 @ 0x66c8ac0] ref P L0: 44.6% 15.3% 31.0%  8.8%  0.3%
[libx264 @ 0x66c8ac0] ref B L0: 84.6% 13.4%  2.0%
[libx264 @ 0x66c8ac0] ref B L1: 96.0%  4.0%
[libx264 @ 0x66c8ac0] kb/s:666.33

How can that be?

-Ulf

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Re: Confusion about vorbis audio for mkv output

Paul B Mahol
On Thu, Feb 18, 2021 at 12:50 AM Ulf Zibis <[hidden email]> wrote:

> Hi,
>
> Using the following command I get an error:
>
> The encoder 'vorbis' is experimental but experimental codecs are not
> enabled, add '-strict -2' if you want to use it.
>
> I'm also missing '-strict -2' at
> https://ffmpeg.org/ffmpeg-all.html#Codec-Options
>
> $ ~/Projects/ffmpeg/dev_2/ffmpeg -i INPUT_2.mkv -i Musik.mkv -map 0:v -map
> 1:a -c:v copy -c:a vorbis INPUT_3.mkv
> ffmpeg version N-101141-g8331eb058d Copyright (c) 2000-2021 the FFmpeg
> developers
>    built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
>    configuration:
>    libavutil      56. 65.100 / 56. 65.100
>    libavcodec     58.123.100 / 58.123.100
>    libavformat    58. 67.100 / 58. 67.100
>    libavdevice    58. 12.100 / 58. 12.100
>    libavfilter     7.107.100 /  7.107.100
>    libswscale      5.  8.100 /  5.  8.100
>    libswresample   3.  8.100 /  3.  8.100
> Input #0, matroska,webm, from 'INPUT_2.mkv':
>    Metadata:
>      SOURCE_TYPE     : dvd
>      ENCODER         : Lavf58.67.100
>    Duration: 01:31:56.13, start: 0.000000, bitrate: 114 kb/s
>    Chapters:
>      Chapter #0:0: start 0.000000, end 10.911556
>      Chapter #0:1: start 10.911556, end 819.225778
>      Chapter #0:2: start 819.225778, end 1839.369956
>      Chapter #0:3: start 1839.369956, end 2689.490133
>      Chapter #0:4: start 2689.490133, end 3289.574978
>      Chapter #0:5: start 3289.574978, end 4584.758089
>      Chapter #0:6: start 4584.758089, end 5516.019689
>    Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p(progressive), 16x16
> [SAR 16:15 DAR 16:15], 25 fps, 25 tbr, 1k tbn, 25 tbc (default)
>      Metadata:
>        ENCODER         : Lavc58.123.100 mpeg4
>        DURATION        : 01:31:56.120000000
>    Stream #0:1(deu): Audio: vorbis, 48000 Hz, stereo, fltp (default)
>      Metadata:
>        LANGUAGE-ISO639_2: deu
>        LANGUAGE-SIMPLE : Deutsch
>        LANGUAGE-DESCRIPTION: Deutsch
>        ENCODER         : Lavc58.18.100 libvorbis
>        DURATION        : 01:31:56.130000000
> [matroska,webm @ 0x5556cb1e5a80] Could not find codec parameters for
> stream 0 (Video: h264, none, 426x240): unspecified pixel format
> Consider increasing the value for the 'analyzeduration' (0) and
> 'probesize' (5000000) options
> Input #1, matroska,webm, from Musik.mkv':
>    Metadata:
>      ENCODER         : Lavf58.16.100
>    Duration: 01:56:18.94, start: -0.007000, bitrate: 108 kb/s
>    Stream #1:0: Video: h264, none, 426x240, 1k tbr, 1k tbn, 2k tbc
> (default)
>      Metadata:
>        HANDLER_NAME    : ISO Media file produced by Google Inc. Created
> on: 04/18/2020.
>        DURATION        : 00:00:00.000000000
>    Stream #1:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
>      Metadata:
>        DURATION        : 01:56:18.941000000
> File 'INPUT_3.mkv' already exists. Overwrite? [y/N] y
> Stream mapping:
>    Stream #0:0 -> #0:0 (copy)
>    Stream #1:1 -> #0:1 (opus (native) -> vorbis (native))
> Press [q] to stop, [?] for help
> [vorbis @ 0x5556cb205880] The encoder 'vorbis' is experimental but
> experimental codecs are not enabled, add '-strict -2' if you want to use it.
> Conversion failed!
>
> But when I transcode a mpg video to mkv, then automatically a vorbis audio
> stream is created, even it is stated "experimental":
>
> $ ~/Projects/ffmpeg/dev_2/ffmpeg -i Kiosk\ Mozartstr.\ -\ Andreas.mpg
> Kiosk\ Mozartstr.\ -\ Andreas.mkv
> ffmpeg version N-101141-g8331eb058d Copyright (c) 2000-2021 the FFmpeg
> developers
>    built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
>    configuration:
>    libavutil      56. 65.100 / 56. 65.100
>    libavcodec     58.123.100 / 58.123.100
>    libavformat    58. 67.100 / 58. 67.100
>    libavdevice    58. 12.100 / 58. 12.100
>    libavfilter     7.107.100 /  7.107.100
>    libswscale      5.  8.100 /  5.  8.100
>    libswresample   3.  8.100 /  3.  8.100
> Input #0, mpeg, from 'Kiosk Mozartstr. - Andreas.mpg':
>    Duration: 00:26:00.49, start: 0.529989, bitrate: 1793 kb/s
>    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
> progressive), 352x288 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
>      Side data:
>        cpb: bitrate max/min/avg: 9578800/0/0 buffer size: 1835008
> vbv_delay: N/A
>    Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s
> File 'Kiosk Mozartstr. - Andreas.mkv' already exists. Overwrite? [y/N] y
> Stream mapping:
>    Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg4 (native))
>    Stream #0:1 -> #0:1 (mp2 (native) -> ac3 (native))
> Press [q] to stop, [?] for help
> Output #0, matroska, to 'Kiosk Mozartstr. - Andreas.mkv':
>    Metadata:
>      encoder         : Lavf58.67.100
>    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p(tv, bt470bg,
> progressive), 352x288 [SAR 12:11 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 1k tbn
>      Metadata:
>        encoder         : Lavc58.123.100 mpeg4
>      Side data:
>        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
>    Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp,
> 192 kb/s
>      Metadata:
>        encoder         : Lavc58.123.100 ac3
> frame=18039 fps=439 q=31.0 Lsize=   35175kB time=00:12:01.52 bitrate=
> 399.4kbits/s speed=17.6x
> video:17939kB audio:16897kB subtitle:0kB other streams:0kB global
> headers:0kB muxing overhead: 0.974401%
> Exiting normally, received signal 2.
> ich@T500:/media/ich/DVDs$ ffmpeg -i Kiosk\ Mozartstr.\ -\ Andreas.mpg
> Kiosk\ Mozartstr.\ -\ Andreas.mkv
> ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/ Copyright
> (c) 2000-2020 the FFmpeg developers
>    built with gcc 8 (Debian 8.3.0-6)
>    configuration: --enable-gpl --enable-version3 --enable-static
> --disable-debug --disable-ffplay --disable-indev=sndio
> --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r
> --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom
> --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype
> --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
> --enable-libopenjpeg --enable-librubberband --enable-libsoxr
> --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus
> --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc
> --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
> --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi
> --enable-libzimg
>    libavutil      56. 51.100 / 56. 51.100
>    libavcodec     58. 91.100 / 58. 91.100
>    libavformat    58. 45.100 / 58. 45.100
>    libavdevice    58. 10.100 / 58. 10.100
>    libavfilter     7. 85.100 /  7. 85.100
>    libswscale      5.  7.100 /  5.  7.100
>    libswresample   3.  7.100 /  3.  7.100
>    libpostproc    55.  7.100 / 55.  7.100
> Input #0, mpeg, from 'Kiosk Mozartstr. - Andreas.mpg':
>    Duration: 00:26:00.49, start: 0.529989, bitrate: 1793 kb/s
>      Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
> progressive), 352x288 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
>      Side data:
>        cpb: bitrate max/min/avg: 9578800/0/0 buffer size: 1835008
> vbv_delay: N/A
>      Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s
> File 'Kiosk Mozartstr. - Andreas.mkv' already exists. Overwrite? [y/N] y
> Stream mapping:
>    Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
>    Stream #0:1 -> #0:1 (mp2 (native) -> vorbis (libvorbis))
> Press [q] to stop, [?] for help
> [libx264 @ 0x66c8ac0] using SAR=12/11
> [libx264 @ 0x66c8ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1
> Cache64
> [libx264 @ 0x66c8ac0] profile High, level 1.3, 4:2:0, 8-bit
> [libx264 @ 0x66c8ac0] 264 - core 161 r3018 db0d417 - H.264/MPEG-4 AVC
> codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options:
> cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
> psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
> cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3
> lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
> bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
> b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
> scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
> qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
> Output #0, matroska, to 'Kiosk Mozartstr. - Andreas.mkv':
>    Metadata:
>      encoder         : Lavf58.45.100
>      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p,
> 352x288 [SAR 12:11 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc
>      Metadata:
>        encoder         : Lavc58.91.100 libx264
>      Side data:
>        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
>      Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 48000 Hz,
> stereo, fltp
>      Metadata:
>        encoder         : Lavc58.91.100 libvorbis
> frame=39012 fps= 50 q=-1.0 Lsize=  142440kB time=00:26:00.36 bitrate=
> 747.8kbits/s speed=2.02x
> video:126928kB audio:14674kB subtitle:0kB other streams:0kB global
> headers:4kB muxing overhead: 0.591646%
> [libx264 @ 0x66c8ac0] frame I:303   Avg QP:22.95  size: 18951
> [libx264 @ 0x66c8ac0] frame P:10864 Avg QP:25.32  size:  7268
> [libx264 @ 0x66c8ac0] frame B:27845 Avg QP:28.91  size:  1626
> [libx264 @ 0x66c8ac0] consecutive B-frames:  1.9%  3.2% 16.8% 78.1%
> [libx264 @ 0x66c8ac0] mb I  I16..4:  2.3% 87.0% 10.7%
> [libx264 @ 0x66c8ac0] mb P  I16..4:  0.5%  8.9%  1.0%  P16..4: 41.9% 28.0%
> 18.0%  0.0%  0.0%    skip: 1.7%
> [libx264 @ 0x66c8ac0] mb B  I16..4:  0.1%  1.0%  0.1%  B16..8: 48.1%
> 7.8%  2.1%  direct: 7.6%  skip:33.4%  L0:36.1% L1:39.8% BI:24.1%
> [libx264 @ 0x66c8ac0] 8x8 transform intra:86.3% inter:80.9%
> [libx264 @ 0x66c8ac0] coded y,uvDC,uvAC intra: 87.5% 88.2% 46.9% inter:
> 32.6% 47.2% 4.6%
> [libx264 @ 0x66c8ac0] i16 v,h,dc,p: 26% 32% 12% 30%
> [libx264 @ 0x66c8ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 19% 26% 5%  6%
> 6%  6%  6%  8%
> [libx264 @ 0x66c8ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 20% 13% 6%  8%
> 8%  9%  7%  8%
> [libx264 @ 0x66c8ac0] i8c dc,h,v,p: 56% 19% 17%  8%
> [libx264 @ 0x66c8ac0] Weighted P-Frames: Y:4.4% UV:1.8%
> [libx264 @ 0x66c8ac0] ref P L0: 44.6% 15.3% 31.0%  8.8%  0.3%
> [libx264 @ 0x66c8ac0] ref B L0: 84.6% 13.4%  2.0%
> [libx264 @ 0x66c8ac0] ref B L1: 96.0%  4.0%
> [libx264 @ 0x66c8ac0] kb/s:666.33
>
> How can that be?
>

Carefully read text next time before posting.

libvorbis != vorbis.


>
> -Ulf
>
> _______________________________________________
> ffmpeg-user mailing list
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> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
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Re: Confusion about vorbis audio for mkv output

Ulf Zibis-2

Am 18.02.21 um 00:52 schrieb Paul B Mahol:

> On Thu, Feb 18, 2021 at 12:50 AM Ulf Zibis <[hidden email]> wrote:
>
>> Hi,
>>
>> Using the following command I get an error:
>>
>> The encoder 'vorbis' is experimental but experimental codecs are not
>> enabled, add '-strict -2' if you want to use it.
>>
>> I'm also missing '-strict -2' at
>> https://ffmpeg.org/ffmpeg-all.html#Codec-Options
>>
>> $ ~/Projects/ffmpeg/dev_2/ffmpeg -i INPUT_2.mkv -i Musik.mkv -map 0:v -map
>> 1:a -c:v copy -c:a vorbis INPUT_3.mkv
>> ffmpeg version N-101141-g8331eb058d Copyright (c) 2000-2021 the FFmpeg
>> developers
>>     built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
>>     configuration:
>>     libavutil      56. 65.100 / 56. 65.100
>>     libavcodec     58.123.100 / 58.123.100
>>     libavformat    58. 67.100 / 58. 67.100
>>     libavdevice    58. 12.100 / 58. 12.100
>>     libavfilter     7.107.100 /  7.107.100
>>     libswscale      5.  8.100 /  5.  8.100
>>     libswresample   3.  8.100 /  3.  8.100
>> Input #0, matroska,webm, from 'INPUT_2.mkv':
>>     Metadata:
>>       SOURCE_TYPE     : dvd
>>       ENCODER         : Lavf58.67.100
>>     Duration: 01:31:56.13, start: 0.000000, bitrate: 114 kb/s
>>     Chapters:
>>       Chapter #0:0: start 0.000000, end 10.911556
>>       Chapter #0:1: start 10.911556, end 819.225778
>>       Chapter #0:2: start 819.225778, end 1839.369956
>>       Chapter #0:3: start 1839.369956, end 2689.490133
>>       Chapter #0:4: start 2689.490133, end 3289.574978
>>       Chapter #0:5: start 3289.574978, end 4584.758089
>>       Chapter #0:6: start 4584.758089, end 5516.019689
>>     Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p(progressive), 16x16
>> [SAR 16:15 DAR 16:15], 25 fps, 25 tbr, 1k tbn, 25 tbc (default)
>>       Metadata:
>>         ENCODER         : Lavc58.123.100 mpeg4
>>         DURATION        : 01:31:56.120000000
>>     Stream #0:1(deu): Audio: vorbis, 48000 Hz, stereo, fltp (default)
>>       Metadata:
>>         LANGUAGE-ISO639_2: deu
>>         LANGUAGE-SIMPLE : Deutsch
>>         LANGUAGE-DESCRIPTION: Deutsch
>>         ENCODER         : Lavc58.18.100 libvorbis
>>         DURATION        : 01:31:56.130000000
>> [matroska,webm @ 0x5556cb1e5a80] Could not find codec parameters for
>> stream 0 (Video: h264, none, 426x240): unspecified pixel format
>> Consider increasing the value for the 'analyzeduration' (0) and
>> 'probesize' (5000000) options
>> Input #1, matroska,webm, from Musik.mkv':
>>     Metadata:
>>       ENCODER         : Lavf58.16.100
>>     Duration: 01:56:18.94, start: -0.007000, bitrate: 108 kb/s
>>     Stream #1:0: Video: h264, none, 426x240, 1k tbr, 1k tbn, 2k tbc
>> (default)
>>       Metadata:
>>         HANDLER_NAME    : ISO Media file produced by Google Inc. Created
>> on: 04/18/2020.
>>         DURATION        : 00:00:00.000000000
>>     Stream #1:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
>>       Metadata:
>>         DURATION        : 01:56:18.941000000
>> File 'INPUT_3.mkv' already exists. Overwrite? [y/N] y
>> Stream mapping:
>>     Stream #0:0 -> #0:0 (copy)
>>     Stream #1:1 -> #0:1 (opus (native) -> vorbis (native))
>> Press [q] to stop, [?] for help
>> [vorbis @ 0x5556cb205880] The encoder 'vorbis' is experimental but
>> experimental codecs are not enabled, add '-strict -2' if you want to use it.
>> Conversion failed!
>>
>> But when I transcode a mpg video to mkv, then automatically a vorbis audio
>> stream is created, even it is stated "experimental":
>>
>> $ ffmpeg -i Kiosk\ Mozartstr.\ -\ Andreas.mpg
>> Kiosk\ Mozartstr.\ -\ Andreas.mkv
>> ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/ Copyright
>> (c) 2000-2020 the FFmpeg developers
>>     built with gcc 8 (Debian 8.3.0-6)
>>     configuration: --enable-gpl --enable-version3 --enable-static
>> --disable-debug --disable-ffplay --disable-indev=sndio
>> --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r
>> --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom
>> --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype
>> --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
>> --enable-libopenjpeg --enable-librubberband --enable-libsoxr
>> --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus
>> --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc
>> --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
>> --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi
>> --enable-libzimg
>>     libavutil      56. 51.100 / 56. 51.100
>>     libavcodec     58. 91.100 / 58. 91.100
>>     libavformat    58. 45.100 / 58. 45.100
>>     libavdevice    58. 10.100 / 58. 10.100
>>     libavfilter     7. 85.100 /  7. 85.100
>>     libswscale      5.  7.100 /  5.  7.100
>>     libswresample   3.  7.100 /  3.  7.100
>>     libpostproc    55.  7.100 / 55.  7.100
>> Input #0, mpeg, from 'Kiosk Mozartstr. - Andreas.mpg':
>>     Duration: 00:26:00.49, start: 0.529989, bitrate: 1793 kb/s
>>       Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
>> progressive), 352x288 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
>>       Side data:
>>         cpb: bitrate max/min/avg: 9578800/0/0 buffer size: 1835008
>> vbv_delay: N/A
>>       Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s
>> File 'Kiosk Mozartstr. - Andreas.mkv' already exists. Overwrite? [y/N] y
>> Stream mapping:
>>     Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
>>     Stream #0:1 -> #0:1 (mp2 (native) -> vorbis (libvorbis))
>> Press [q] to stop, [?] for help
>> [libx264 @ 0x66c8ac0] using SAR=12/11
>> [libx264 @ 0x66c8ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1
>> Cache64
>> [libx264 @ 0x66c8ac0] profile High, level 1.3, 4:2:0, 8-bit
>> [libx264 @ 0x66c8ac0] 264 - core 161 r3018 db0d417 - H.264/MPEG-4 AVC
>> codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options:
>> cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
>> psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
>> cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3
>> lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
>> bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
>> b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
>> scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
>> qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
>> Output #0, matroska, to 'Kiosk Mozartstr. - Andreas.mkv':
>>     Metadata:
>>       encoder         : Lavf58.45.100
>>       Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p,
>> 352x288 [SAR 12:11 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc
>>       Metadata:
>>         encoder         : Lavc58.91.100 libx264
>>       Side data:
>>         cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
>>       Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 48000 Hz,
>> stereo, fltp
>>       Metadata:
>>         encoder         : Lavc58.91.100 libvorbis
>> frame=39012 fps= 50 q=-1.0 Lsize=  142440kB time=00:26:00.36 bitrate=
>> 747.8kbits/s speed=2.02x
>> video:126928kB audio:14674kB subtitle:0kB other streams:0kB global
>> headers:4kB muxing overhead: 0.591646%
>> [libx264 @ 0x66c8ac0] frame I:303   Avg QP:22.95  size: 18951
>> [libx264 @ 0x66c8ac0] frame P:10864 Avg QP:25.32  size:  7268
>> [libx264 @ 0x66c8ac0] frame B:27845 Avg QP:28.91  size:  1626
>> [libx264 @ 0x66c8ac0] consecutive B-frames:  1.9%  3.2% 16.8% 78.1%
>> [libx264 @ 0x66c8ac0] mb I  I16..4:  2.3% 87.0% 10.7%
>> [libx264 @ 0x66c8ac0] mb P  I16..4:  0.5%  8.9%  1.0%  P16..4: 41.9% 28.0%
>> 18.0%  0.0%  0.0%    skip: 1.7%
>> [libx264 @ 0x66c8ac0] mb B  I16..4:  0.1%  1.0%  0.1%  B16..8: 48.1%
>> 7.8%  2.1%  direct: 7.6%  skip:33.4%  L0:36.1% L1:39.8% BI:24.1%
>> [libx264 @ 0x66c8ac0] 8x8 transform intra:86.3% inter:80.9%
>> [libx264 @ 0x66c8ac0] coded y,uvDC,uvAC intra: 87.5% 88.2% 46.9% inter:
>> 32.6% 47.2% 4.6%
>> [libx264 @ 0x66c8ac0] i16 v,h,dc,p: 26% 32% 12% 30%
>> [libx264 @ 0x66c8ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 19% 26% 5%  6%
>> 6%  6%  6%  8%
>> [libx264 @ 0x66c8ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 20% 13% 6%  8%
>> 8%  9%  7%  8%
>> [libx264 @ 0x66c8ac0] i8c dc,h,v,p: 56% 19% 17%  8%
>> [libx264 @ 0x66c8ac0] Weighted P-Frames: Y:4.4% UV:1.8%
>> [libx264 @ 0x66c8ac0] ref P L0: 44.6% 15.3% 31.0%  8.8%  0.3%
>> [libx264 @ 0x66c8ac0] ref B L0: 84.6% 13.4%  2.0%
>> [libx264 @ 0x66c8ac0] ref B L1: 96.0%  4.0%
>> [libx264 @ 0x66c8ac0] kb/s:666.33
>>
>> How can that be?
>>
> Carefully read text next time before posting.
>
> libvorbis != vorbis.

When I use
-c:a libvorbis
I get
Unknown encoder 'libvorbis'

What does '-strict -2' mean?
It is missing at
https://ffmpeg.org/ffmpeg-all.html#Codec-Options

-Ulf

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Re: Confusion about vorbis audio for mkv output

Paul B Mahol
On Thu, Feb 18, 2021 at 1:04 AM Ulf Zibis <[hidden email]> wrote:

>
> Am 18.02.21 um 00:52 schrieb Paul B Mahol:
> > On Thu, Feb 18, 2021 at 12:50 AM Ulf Zibis <[hidden email]> wrote:
> >
> >> Hi,
> >>
> >> Using the following command I get an error:
> >>
> >> The encoder 'vorbis' is experimental but experimental codecs are not
> >> enabled, add '-strict -2' if you want to use it.
> >>
> >> I'm also missing '-strict -2' at
> >> https://ffmpeg.org/ffmpeg-all.html#Codec-Options
> >>
> >> $ ~/Projects/ffmpeg/dev_2/ffmpeg -i INPUT_2.mkv -i Musik.mkv -map 0:v
> -map
> >> 1:a -c:v copy -c:a vorbis INPUT_3.mkv
> >> ffmpeg version N-101141-g8331eb058d Copyright (c) 2000-2021 the FFmpeg
> >> developers
> >>     built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
> >>     configuration:
> >>     libavutil      56. 65.100 / 56. 65.100
> >>     libavcodec     58.123.100 / 58.123.100
> >>     libavformat    58. 67.100 / 58. 67.100
> >>     libavdevice    58. 12.100 / 58. 12.100
> >>     libavfilter     7.107.100 /  7.107.100
> >>     libswscale      5.  8.100 /  5.  8.100
> >>     libswresample   3.  8.100 /  3.  8.100
> >> Input #0, matroska,webm, from 'INPUT_2.mkv':
> >>     Metadata:
> >>       SOURCE_TYPE     : dvd
> >>       ENCODER         : Lavf58.67.100
> >>     Duration: 01:31:56.13, start: 0.000000, bitrate: 114 kb/s
> >>     Chapters:
> >>       Chapter #0:0: start 0.000000, end 10.911556
> >>       Chapter #0:1: start 10.911556, end 819.225778
> >>       Chapter #0:2: start 819.225778, end 1839.369956
> >>       Chapter #0:3: start 1839.369956, end 2689.490133
> >>       Chapter #0:4: start 2689.490133, end 3289.574978
> >>       Chapter #0:5: start 3289.574978, end 4584.758089
> >>       Chapter #0:6: start 4584.758089, end 5516.019689
> >>     Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p(progressive),
> 16x16
> >> [SAR 16:15 DAR 16:15], 25 fps, 25 tbr, 1k tbn, 25 tbc (default)
> >>       Metadata:
> >>         ENCODER         : Lavc58.123.100 mpeg4
> >>         DURATION        : 01:31:56.120000000
> >>     Stream #0:1(deu): Audio: vorbis, 48000 Hz, stereo, fltp (default)
> >>       Metadata:
> >>         LANGUAGE-ISO639_2: deu
> >>         LANGUAGE-SIMPLE : Deutsch
> >>         LANGUAGE-DESCRIPTION: Deutsch
> >>         ENCODER         : Lavc58.18.100 libvorbis
> >>         DURATION        : 01:31:56.130000000
> >> [matroska,webm @ 0x5556cb1e5a80] Could not find codec parameters for
> >> stream 0 (Video: h264, none, 426x240): unspecified pixel format
> >> Consider increasing the value for the 'analyzeduration' (0) and
> >> 'probesize' (5000000) options
> >> Input #1, matroska,webm, from Musik.mkv':
> >>     Metadata:
> >>       ENCODER         : Lavf58.16.100
> >>     Duration: 01:56:18.94, start: -0.007000, bitrate: 108 kb/s
> >>     Stream #1:0: Video: h264, none, 426x240, 1k tbr, 1k tbn, 2k tbc
> >> (default)
> >>       Metadata:
> >>         HANDLER_NAME    : ISO Media file produced by Google Inc. Created
> >> on: 04/18/2020.
> >>         DURATION        : 00:00:00.000000000
> >>     Stream #1:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
> >>       Metadata:
> >>         DURATION        : 01:56:18.941000000
> >> File 'INPUT_3.mkv' already exists. Overwrite? [y/N] y
> >> Stream mapping:
> >>     Stream #0:0 -> #0:0 (copy)
> >>     Stream #1:1 -> #0:1 (opus (native) -> vorbis (native))
> >> Press [q] to stop, [?] for help
> >> [vorbis @ 0x5556cb205880] The encoder 'vorbis' is experimental but
> >> experimental codecs are not enabled, add '-strict -2' if you want to
> use it.
> >> Conversion failed!
> >>
> >> But when I transcode a mpg video to mkv, then automatically a vorbis
> audio
> >> stream is created, even it is stated "experimental":
> >>
> >> $ ffmpeg -i Kiosk\ Mozartstr.\ -\ Andreas.mpg
> >> Kiosk\ Mozartstr.\ -\ Andreas.mkv
> >> ffmpeg version 4.3.1-static https://johnvansickle.com/ffmpeg/ Copyright
> >> (c) 2000-2020 the FFmpeg developers
> >>     built with gcc 8 (Debian 8.3.0-6)
> >>     configuration: --enable-gpl --enable-version3 --enable-static
> >> --disable-debug --disable-ffplay --disable-indev=sndio
> >> --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r
> >> --enable-gnutls --enable-gmp --enable-libgme --enable-gray
> --enable-libaom
> >> --enable-libfribidi --enable-libass --enable-libvmaf
> --enable-libfreetype
> >> --enable-libmp3lame --enable-libopencore-amrnb
> --enable-libopencore-amrwb
> >> --enable-libopenjpeg --enable-librubberband --enable-libsoxr
> >> --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus
> >> --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc
> >> --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
> >> --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi
> >> --enable-libzimg
> >>     libavutil      56. 51.100 / 56. 51.100
> >>     libavcodec     58. 91.100 / 58. 91.100
> >>     libavformat    58. 45.100 / 58. 45.100
> >>     libavdevice    58. 10.100 / 58. 10.100
> >>     libavfilter     7. 85.100 /  7. 85.100
> >>     libswscale      5.  7.100 /  5.  7.100
> >>     libswresample   3.  7.100 /  3.  7.100
> >>     libpostproc    55.  7.100 / 55.  7.100
> >> Input #0, mpeg, from 'Kiosk Mozartstr. - Andreas.mpg':
> >>     Duration: 00:26:00.49, start: 0.529989, bitrate: 1793 kb/s
> >>       Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg,
> >> progressive), 352x288 [SAR 12:11 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50
> tbc
> >>       Side data:
> >>         cpb: bitrate max/min/avg: 9578800/0/0 buffer size: 1835008
> >> vbv_delay: N/A
> >>       Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s
> >> File 'Kiosk Mozartstr. - Andreas.mkv' already exists. Overwrite? [y/N] y
> >> Stream mapping:
> >>     Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
> >>     Stream #0:1 -> #0:1 (mp2 (native) -> vorbis (libvorbis))
> >> Press [q] to stop, [?] for help
> >> [libx264 @ 0x66c8ac0] using SAR=12/11
> >> [libx264 @ 0x66c8ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1
> >> Cache64
> >> [libx264 @ 0x66c8ac0] profile High, level 1.3, 4:2:0, 8-bit
> >> [libx264 @ 0x66c8ac0] 264 - core 161 r3018 db0d417 - H.264/MPEG-4 AVC
> >> codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html -
> options:
> >> cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
> >> psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
> >> cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3
> >> lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
> >> bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
> >> b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250
> keyint_min=25
> >> scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
> >> qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
> >> Output #0, matroska, to 'Kiosk Mozartstr. - Andreas.mkv':
> >>     Metadata:
> >>       encoder         : Lavf58.45.100
> >>       Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv420p,
> >> 352x288 [SAR 12:11 DAR 4:3], q=-1--1, 25 fps, 1k tbn, 25 tbc
> >>       Metadata:
> >>         encoder         : Lavc58.91.100 libx264
> >>       Side data:
> >>         cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
> >>       Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 48000
> Hz,
> >> stereo, fltp
> >>       Metadata:
> >>         encoder         : Lavc58.91.100 libvorbis
> >> frame=39012 fps= 50 q=-1.0 Lsize=  142440kB time=00:26:00.36 bitrate=
> >> 747.8kbits/s speed=2.02x
> >> video:126928kB audio:14674kB subtitle:0kB other streams:0kB global
> >> headers:4kB muxing overhead: 0.591646%
> >> [libx264 @ 0x66c8ac0] frame I:303   Avg QP:22.95  size: 18951
> >> [libx264 @ 0x66c8ac0] frame P:10864 Avg QP:25.32  size:  7268
> >> [libx264 @ 0x66c8ac0] frame B:27845 Avg QP:28.91  size:  1626
> >> [libx264 @ 0x66c8ac0] consecutive B-frames:  1.9%  3.2% 16.8% 78.1%
> >> [libx264 @ 0x66c8ac0] mb I  I16..4:  2.3% 87.0% 10.7%
> >> [libx264 @ 0x66c8ac0] mb P  I16..4:  0.5%  8.9%  1.0%  P16..4: 41.9%
> 28.0%
> >> 18.0%  0.0%  0.0%    skip: 1.7%
> >> [libx264 @ 0x66c8ac0] mb B  I16..4:  0.1%  1.0%  0.1%  B16..8: 48.1%
> >> 7.8%  2.1%  direct: 7.6%  skip:33.4%  L0:36.1% L1:39.8% BI:24.1%
> >> [libx264 @ 0x66c8ac0] 8x8 transform intra:86.3% inter:80.9%
> >> [libx264 @ 0x66c8ac0] coded y,uvDC,uvAC intra: 87.5% 88.2% 46.9% inter:
> >> 32.6% 47.2% 4.6%
> >> [libx264 @ 0x66c8ac0] i16 v,h,dc,p: 26% 32% 12% 30%
> >> [libx264 @ 0x66c8ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 19% 26% 5%  6%
> >> 6%  6%  6%  8%
> >> [libx264 @ 0x66c8ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 20% 13% 6%  8%
> >> 8%  9%  7%  8%
> >> [libx264 @ 0x66c8ac0] i8c dc,h,v,p: 56% 19% 17%  8%
> >> [libx264 @ 0x66c8ac0] Weighted P-Frames: Y:4.4% UV:1.8%
> >> [libx264 @ 0x66c8ac0] ref P L0: 44.6% 15.3% 31.0%  8.8%  0.3%
> >> [libx264 @ 0x66c8ac0] ref B L0: 84.6% 13.4%  2.0%
> >> [libx264 @ 0x66c8ac0] ref B L1: 96.0%  4.0%
> >> [libx264 @ 0x66c8ac0] kb/s:666.33
> >>
> >> How can that be?
> >>
> > Carefully read text next time before posting.
> >
> > libvorbis != vorbis.
>
> When I use
> -c:a libvorbis
> I get
> Unknown encoder 'libvorbis'
>
> What does '-strict -2' mean?
>

it is alias for -strict experimental

And you better not use that flag.


> It is missing at
> https://ffmpeg.org/ffmpeg-all.html#Codec-Options
>
> -Ulf
>
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Re: Confusion about vorbis audio for mkv output

Ulf Zibis-2

Am 18.02.21 um 01:07 schrieb Paul B Mahol:
> On Thu, Feb 18, 2021 at 1:04 AM Ulf Zibis <[hidden email]> wrote:
>
>>> Carefully read text next time before posting.
>>>
>>> libvorbis != vorbis.
I still do not understand, what you want me to say, because ...
>> When I use:
>> -c:a libvorbis
>> I get:
>> Unknown encoder 'libvorbis'
- Ulf
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Re: Confusion about vorbis audio for mkv output

Paul B Mahol
On Thu, Feb 18, 2021 at 3:15 AM Ulf Zibis <[hidden email]> wrote:

>
> Am 18.02.21 um 01:07 schrieb Paul B Mahol:
> > On Thu, Feb 18, 2021 at 1:04 AM Ulf Zibis <[hidden email]> wrote:
> >
> >>> Carefully read text next time before posting.
> >>>
> >>> libvorbis != vorbis.
> I still do not understand, what you want me to say, because ...
> >> When I use:
> >> -c:a libvorbis
> >> I get:
> >> Unknown encoder 'libvorbis'
>

Use proper build of ffmpeg that have such encoder.


> - Ulf
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