Embed subtitles in video

[chrismwendt]

QuickTime doesn't pick up the .srt subtitles file automatically. It would be convenient if this plugin embedded the subtitles into the video after recording. Here's a command that seems to work:

ffmpeg -i video.mp4 -i sub.srt -c:v copy -c:a copy -c:s mov_text -metadata:s:s:0 language=eng out.mp4

From https://discussions.apple.com/message/28455689#28455689

cc @tomyam1