Change video player for full-screen HTML5 videos

Hi, all.

I often watch full screen html5 videos with captions, but the default player in Android 4.2 can't handle subtitles (while the Chrome itself can). So I'd like to try changing the video player that is used to play videos in full screen (e.g., use VLC for that). How do I do that?

I tried clearing defaults for the Gallery app, but that didn't work.