Quote Originally Posted by okone View Post
No. MKV allows subtitles to be added as if they were a seperate stream. Essentially this means you can turn them on and off in media players.

To only other way to achieve a similar result is to create a seperate subtitle file (usually .srt or .sub) that you have to load with the file, be it avi or mp4.

You can also hardcode subtitles to a video stream. The obvious downside is that you cannot get rid of them.
In handbrake, you can insert subtitles just like you could in MKV though.