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.
ffplay -ss 00:00:00 -t 10 output.mp4 Avoid keeping cryptic names. Use a standard convention:
Example: cawd764_20250320_025654_end_engsub_hardcoded.mp4 If cawd764engsub convert025654 min work is a recurring task pattern, write a batch script: cawd764engsub convert025654 min work
[Project]_[Date]_[StartTime]_[Duration]_[SubtitleFlag].mp4
# Windows batch example set INPUT=cawd764engsub.mkv set START=02:56:54 set OUTPUT=processed_%START%.mp4 ffmpeg -ss %START% -i %INPUT% -vf "subtitles=%INPUT%" -c:v libx264 -c:a aac %OUTPUT% For multiple files with engsub in name: ffmpeg -ss 02:56:54 -i cawd764engsub
It is important to clarify upfront that the string of text does not correspond to any known professional software, standard video encoding tool, or widely recognized file format.
| Method | Output | Best for | |--------|--------|----------| | | Keep soft subtitles as separate track | Preserve original quality & subtitle flexibility | | Burn-in (hardcode) | Subtitles become part of video image | Players that don’t support soft subs (TVs, some mobile) | | Extract | Save subtitles as .srt or .ass | Editing or translating subs separately | | Method | Output | Best for |
To check existing subtitle streams: