About subtitles
This page is about subtitle editors. For other subtitle-related issues, check the wiki page of your video player. For mplayer, check:
http://linux.overshoot.tv/wiki/multimedia/mplayer
subtitleeditor
http://linux.overshoot.tv/media-video/subtitleeditor
A gtk-based subtitle editor, currently available in repositories.
GStreamer plugins
You may get the following message:
GStreamer plugins missing.
The playback of this movie requires the following decoders which are not installed:
XVID MPEG-4 decoder