ffmpeg -ss 02:56:54 -i cawd764engsub.mkv -vf "subtitles=cawd764engsub.mkv" -c:v libx264 -c:a aac -preset fast "output_engsub_burned.mp4" This produces a widely playable MP4 file with hardcoded English subtitles, starting exactly at 2 hours, 56 minutes, and 54 seconds into the original video.
ffmpeg -version Since the filename contains engsub , you have three choices when converting: cawd764engsub convert025654 min work
Example: cawd764_20250320_025654_end_engsub_hardcoded.mp4 If cawd764engsub convert025654 min work is a recurring task pattern, write a batch script: ffmpeg -ss 02:56:54 -i cawd764engsub
To check existing subtitle streams: