use codec_id so that the codec does not need to be opened
use codec_id so that the codec does not need to be opened


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@1263 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg