Yes, it's only in the first frame for Panasonics mxf avcintra files.
>> My decoder expects right extradata. Yes, I can add
>> protection to check if it's valid.
>> I debugged with h264dec.c, it can not find valid sps pps either.
> But why should it abort if the extradata is not valid but unneeded?
> Feel free to send a patch that detects in the mxf demuxer if
> extradata has to be inserted or not.
> See also ticket #4820.