The question I have is similar to the following post: https://superuser.com/questions/932730/ffmpeg-mkv-to-mp4-conversion-loses-subtitles
I am using ffmpeg version n5.1.2. I have an mkv that has two subtitle tracks. I am trying to convert it to mp4. mkvmerge -i input.mkv File 'input.mkv': container: Matroska Track ID 0: video (HEVC/H.265/MPEG-H) Track ID 1: audio (E-AC-3) Track ID 2: subtitles (HDMV PGS) Track ID 3: subtitles (HDMV PGS) Chapters: 10 entries I believe Track ID 2 is for foreign dialog only and is the one I would prefer to use. I also prefer to use hardsubs but would take hard or soft subs at this point. I've tried a number of approaches with little success. The closest I've gotten is to issue the subtitle=input.mkv option. ffmpeg -i input.mkv -c:v hecv_nvenc -crf 26 -preset fast -c:a aac -b:a 128k subtitles=input.mkv output.mp4 I expected this to burn the subs to the video but oddly enough, it seemed to make an mp4 with a subtitle track to toggle. Unfortunately the subtitles are just the chapter names and not the actual subtitles. I've also tried to manually select different subtitle tracks by using "subtitles=input.mkv:si=1" as per http://ffmpeg.org/ffmpeg-filters.html#subtitles. Unfortunately this results in an error: "Unable to find a suitable output format for 'subtitles=input.mkv:si1'" followed by: "subtitles=input.mkv:si=1: Invalid argument" I've also tried several other options including "-c:s copy" which didn't work due to the nature of the original subtitles (PGS) I suspect. Am I doing something wrong or missing something? _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".