ffmpeg Reference Add Subtitles to Video (include language) ffmpeg -i source_file.mkv -i video_subtitles.sub -map 0 -map 1 -metadata:s:s:0 language=eng -c copy target_file.mkv Convert Container ffmpeg -i source_file.mp4 -acodec copy -vcodec copy target_file.mkv Seek to N Time In File and Output Result ffmpeg -ss 132 -i source_file.mp3 target_file.mp3 Seek to N1 Time (e.g., 00:60:00) and Output After N2 Seconds of Duration (e.g., 2) ffmpeg -ss "$n1" -i source_file.mp3 -t "$n2" target_file.mp3 Seek to N1 (e.g., 00:60:00) Time and Output At N2 Time (e.g., 01:02:00) ffmpeg -ss "$n1" -i source_file.mp3 -to "$n2" target_file.mp3 Seek to N1 Time and Output A Screenshot ffmpeg -i inputvideo.mp4 -ss 00:00:03 -frames:v 1 foobar.jpeg Convert from FLAC to MP3 and Keep Album Art ffmpeg -i source_file.flac -c:v copy -q:a 0 target_file.mp3
