Hey Zach, Thanks for the additional context. Embedding in the traditional sense is not available now. If archival is also a primary goal, have you checked out the RCWT muxer?
This muxer can collect the original EIA608/CEA708 bytes with all fields, in A53 Part 4 format, to a preservable file. The RCWT format is ccextractor's native format for archival and is publically documented. You can do something like, ffmpeg -f lavfi -i "movie=MyMovie.mkv[out+subcc]" -map 0:s -c:s copy -f rcwt MyMoviePreservedCC.bin Then postprocess with either ccextractor or FFmpeg, eg ffmpeg -i MyMoviePreservedCC.bin output.ass or ccextractor -trim MyMoviePreservedCC.bin FFmpeg's EIA608 decoder does an OK job of preserving some formatting when converting to ASS. RCWT gives you archival and post processing flexibility. Does this help? _______________________________________________ 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".
