Check return value of frame_start(), this avoids a crash if AVCodecContext::get_buffer failed. Not sure if returning -1 is the best possible solution but at least avoids the crash.
Check return value of frame_start(), this avoids a crash if AVCodecContext::get_buffer failed.
Not sure if returning -1 is the best possible solution but at least avoids the crash.


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@17520 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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