Yeah, I don't think there's a way to embed subtitles into an avi file - he'd need to remux into mkv to do that. The easiest way will be to name the sub file the same as the video file (ie Ep1.avi ...

Arrgh.I have some Xvid .AVIs with .srt (text-based) subtitle files. I need to recode them to DVD-video in order to watch them on my (non-MPEG4-compliant) DVD player. I can SubMux the .srt and .avi ...

How to add subtitles in VLC Media Player It's simple to add subtitles to any video in VLC, just by downloading an online file.