        Additional checks for strange num_val in FLV metadata         Avoids some "Unsupported audio codec (6)" message in FLVs, e.g.
        Additional checks for strange num_val in FLV metadata
        Avoids some "Unsupported audio codec (6)" message in FLVs, e.g.



git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@12510 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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