simplify only change context if frame header is error-free, as some fields may not be stored in the frame header and so a single damaged frame-header may trash them
simplify
only change context if frame header is error-free, as some fields may not be stored in the frame header and so a single damaged frame-header may trash them


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@2796 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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