Hi,
When reading AVPackets from a file, it is straightforward to pass
correct parameters to the ffmpeg/vdpau decoder, i. e., we call
av_format_find_stream_info
and get the relevant data to "AVStream(s)". Then we do:
av_codec_parameters_to_context(AVCodecContext,AVStream.codecpar[AVCodecParameters])
That populates correct parameters into AVCodecContext, namely,
AVCodecContext->width, height, etc.
This works also with "raw" H264 streams (i.e., with ".h264" files), that
are not "container" formats, such as matroska, etc..
.. so the only conclusion is, that "av_format_find_stream_info" does
some kind of sps/pps packet parsing, right?
We would like to feed the ffmpeg/vdpau decoder with a live stream - in
our case bitstream coming from the live555 library.
How are we supposed to dig out width, height, etc. parameters using
ffmpeg ? FFmpeg/vdpau decoder requires those parameters to be in place
in AVCodecContext - otherwise it will crash (this is not the case for
the normal "software" encoder).
Regards,
Sampsa
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