Overlay images to frames in video
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Overlay images to frames in video
 
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Hi
First poster, o apologies for any forgotten info. I have a video with the following metadata: ``` $ ffprobe ./1.pre-processed.data/bemovi/20210208_00097.avi ffprobe version 4.3.2 Copyright (c) 2007-2021 the FFmpeg developers built with Apple clang version 12.0.0 (clang-1200.0.32.29) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.2_4 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox 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 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 7.100 / 5. 7.100 libswresample 3. 7.100 / 3. 7.100 libpostproc 55. 7.100 / 55. 7.100 Input #0, avi, from './1.pre-processed.data/bemovi/20210208_00097.avi': Metadata: encoder : Lavf58.45.100 Duration: 00:00:12.50, start: 0.000000, bitrate: 91831 kb/s Stream #0:0: Video: png (PNG / 0x20474E50), pal8(pc), 2048x2048, 92565 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc Metadata: title : FileAVI write ``` In addition, I have 125 images (jpg, but I can as easily create them as png) which contain some labelling of the individual frames. The particles are moving, the images are different. Now I want to overlay the images over the corresponding frames. What is the easiest to do this? I could convert them to a move, then overlay these two, but I have the feeling I could do this in one step? Any suggestions? Thanks, Rainer -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Zürich Office Y34-J-74 Winterthurerstrasse 190 8075 Zürich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: [hidden email] [hidden email] Skype: RMkrug PGP: 0x0F52F982 _______________________________________________ ffmpeg-user mailing list [hidden email] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [hidden email] with subject "unsubscribe". |
smime.p7s (5K)
Re: Overlay images to frames in video
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Re: Overlay images to frames in video
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Thanks for your reply
Comments inline > On 7 Apr 2021, at 21:28, pdr0 <[hidden email]> wrote: > > Rainer M. Krug-2 wrote >> Hi >> >> First poster, o apologies for any forgotten info. >> >> >> I have a video with the following metadata: >> >> ``` >> $ ffprobe ./1.pre-processed.data/bemovi/20210208_00097.avi >> ffprobe version 4.3.2 Copyright (c) 2007-2021 the FFmpeg developers >> built with Apple clang version 12.0.0 (clang-1200.0.32.29) >> configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.2_4 --enable-shared >> --enable-pthreads --enable-version3 --enable-avresample --cc=clang >> --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls >> --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d >> --enable-libmp3lame --enable-libopus --enable-librav1e >> --enable-librubberband --enable-libsnappy --enable-libsrt >> --enable-libtesseract --enable-libtheora --enable-libvidstab >> --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 >> --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma >> --enable-libfontconfig --enable-libfreetype --enable-frei0r >> --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb >> --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq >> --enable-libzimg --disable-libjack --disable-indev=jack >> --enable-videotoolbox >> 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 >> libavresample 4. 0. 0 / 4. 0. 0 >> libswscale 5. 7.100 / 5. 7.100 >> libswresample 3. 7.100 / 3. 7.100 >> libpostproc 55. 7.100 / 55. 7.100 >> Input #0, avi, from './1.pre-processed.data/bemovi/20210208_00097.avi': >> Metadata: >> encoder : Lavf58.45.100 >> Duration: 00:00:12.50, start: 0.000000, bitrate: 91831 kb/s >> Stream #0:0: Video: png (PNG / 0x20474E50), pal8(pc), 2048x2048, >> 92565 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc >> Metadata: >> title : FileAVI write >> ``` >> >> In addition, I have 125 images (jpg, but I can as easily create them as >> png) which contain some labelling of the individual frames. The particles >> are moving, the images are different. >> >> Now I want to overlay the images over the corresponding frames. >> >> What is the easiest to do this? I could convert them to a move, then >> overlay these two, but I have the feeling I could do this in one step? >> >> Any suggestions? >> >> Thanks, >> >> Rainer > > > Overlay them where? What x,y position? 1:1 overlay - i.e. covering everything. > What is the dimension of your jpg sequence? They are the same dimensions as the video. > > jpg does not specify an alpha channel (transparency information). If you > overlay the jpg sequence over the base video layer , and assuming they are > the same dimensions, you will "cover up" the video layer entirely . You will > not see the video, only the jpg sequence > > When you say you can "create them as PNG", does the original source have an > alpha channel? The images are created in a different script. I changed it to png and they have ab alpha channel. I am using now the following: ffmpeg -start_number 1 -framerate 10 -i 'frame_%d.png’ -vcodec png ‘overlay.avi' To create the move from the png files (same frame rate and codec as the second movie), and ffmpeg -i ‘background_movie.avi' -i 'overlay.avi' -filter_complex 'overlay=0x0’ ‘final_movie.avi’ To do the actual overlay. This is working. If I am missing something here, please let me know. Thanks, Rainer > > > > > > > -- > Sent from: http://ffmpeg-users.933282.n4.nabble.com/ <http://ffmpeg-users.933282.n4.nabble.com/> > _______________________________________________ > ffmpeg-user mailing list > [hidden email] <mailto:[hidden email]> > https://ffmpeg.org/mailman/listinfo/ffmpeg-user <https://ffmpeg.org/mailman/listinfo/ffmpeg-user> > > To unsubscribe, visit link above, or email > [hidden email] <mailto:[hidden email]> with subject "unsubscribe". Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Zürich Office Y34-J-74 Winterthurerstrasse 190 8075 Zürich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: [hidden email] [hidden email] Skype: RMkrug PGP: 0x0F52F982 _______________________________________________ ffmpeg-user mailing list [hidden email] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [hidden email] with subject "unsubscribe". |
Re: Overlay images to frames in video
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Re: Overlay images to frames in video
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Thanks a lot - these are the things I was afraid of missing.
I will change it and use 'overlay=x=0:y=0’ for clarity. Rainer > On 8 Apr 2021, at 09:45, Michael Koch <[hidden email]> wrote: > > Am 08.04.2021 um 09:27 schrieb Rainer M Krug: >> ffmpeg -i ‘background_movie.avi' -i 'overlay.avi' -filter_complex 'overlay=0x0’ ‘final_movie.avi’ > > I think overlay=0x0 is not doing what you expect. It does set the x option to hexadecimal 0, and it doesn't specify the y option. In your case that doesn't matter because the default values are 0. You could write 'overlay=x=0:y=0' or you could simplify it to just 'overlay' without any options. > > Michael > > _______________________________________________ > ffmpeg-user mailing list > [hidden email] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [hidden email] with subject "unsubscribe". Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Orcid ID: 0000-0002-7490-0066 Department of Evolutionary Biology and Environmental Studies University of Zürich Office Y34-J-74 Winterthurerstrasse 190 8075 Zürich Switzerland Office: +41 (0)44 635 47 64 Cell: +41 (0)78 630 66 57 email: [hidden email] [hidden email] Skype: RMkrug PGP: 0x0F52F982 _______________________________________________ ffmpeg-user mailing list [hidden email] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [hidden email] with subject "unsubscribe". |
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