capmt: Try to fix the locking deadlocks
mkv: flush cluster also after 1 sec timeout
transcode: ffmpeg fixes, VP8 & VORBIS works

Does not work (for me):
 - H264
 - Audio sync for vorbis..
WEBUI: cosmetic Add icon for channels and channel tags
WEBUI: change icon watch TV, Auto Record, add icon for HELP

Please add icon help for all button for all tabs because i am beginner
and i dont know how...
WEBUI: change icon DVR Autorec Entires
WEBUI: changed icon debug, add icon help for something tabs

Please make help icon for other tabs...
transcoding: AVFrame has channels only for FFMPEG
WEBUI: Fix the storage for profile builders, fixes #2360