229c0580e2
This patch writes the timecode in the .srt file relative to the start frame of the scene. If the timecode is global but scene does not start at frame 0 the subtitles don't match if they get loaded in an external video player. Muted strips will be ignored. Don't allow negative timecodes in .srt. Reviewed By: Richard Antalik Differential Revision: http://developer.blender.org/D11762