Only try to probe the codec when the available data has roughly doubled relative to the last attempt.
Only try to probe the codec when the available data has roughly doubled
relative to the last attempt.


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@14188 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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