Feed extradata parameter sets to the decoder - #166
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Signed-off-by: KP Choi <19379257+kpchoi@users.noreply.github.com>
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MP4 (evcC) streams carry SPS/PPS in extradata only, so after a seek the
decoder receives slices without parameter sets and produces no frames.
Parse the EVCDecoderConfigurationRecord in extradata and feed the
parameter sets to the decoder on init and after flushing, so decoding
resumes at any random access point. Streams without extradata are
unaffected.