Hi Jack, Thanks for the suggestions. Could you please tell me where I can get a build of ffmpeg that will work with the -c:s scc command? That encoder doesn't seem to be in the release version I am working with.
It is slightly unclear to me how your suggestion for the extract command suggestion should be implemented. All of my media files I am working with now are the same frame rate, but forcing a frame rate prior to embedding is probably a good idea. I had assumed there were still bugs in the code for this, but it would be nice if extraction/embedding could work without having to change more. Zach On Thu, Feb 6, 2025 at 4:57 AM Jack Lau <jacklau122...@gmail.com> wrote: > > > > I have been absent from the list for a few years, so I would appreciate > it > > if someone could catch me up a bit. I am needing to extract and embed > scc > > files with 608 captions. I am pleased to see that transcoding without > > frame rate changes now preserves 608 intact, and there appear to be > > extraction and embed functions but they do seem to have bugs for my files > > at 1080p2997. Are there any developers willing to take on a paid project > > to fix whatever is the issue? Here are the commands I am working with. > > > > Embed: > > "C:\FFmpeg\ffmpeg7.1_2024-12-14\ffmpeg.exe" -i > > "C:\Users\Captions\AIM-2301_premiereDF.mp4" -i > > "C:\Captions\AIM-2301_premiereDF.mp4.scc" -map 0:v -map 0:a -map 1 -c:v > > copy -c:a copy -c:s mov_text -metadata:s:s:0 language=eng > > "C:\Captions\AIM-2301_premiereDFcopy.mp4" > > > > Extract: > > "C:\FFmpeg\ffmpeg7.1_2024-12-14\ffmpeg.exe" -f lavfi -i > > > "movie=\'C:\\Captions\\AIM-2301_premiereDF_ffmpegEmbedscc.mp4\'"[out+subcc] > > -map 0:1 -c:s copy "C:\Captions\AIM-2301_premiereDF_ffmpegEmbedscc.scc” > > > > > Hi, > > I’ve reviewed the issue with embedding and extracting 608 SCC captions at > 1080p2997 resolution and identified a few areas that might help resolve the > character duplication and data spill. Here's a summary of my findings: > > The current command uses -c:s mov_text, but SCC files may work better with > -c:s scc to preserve the format correctly. > The current command uses a filtergraph that might not map correctly for > SCC extraction. Instead, try simplifying the extraction command: -map 0:s:0 > -c:s copy > Frame Rate Issues: Ensure the video frame rate and the SCC file frame rate > match. You might want to force a specific frame rate (e.g., -r 29.97). > > Let me know if you have further questions. > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
