Andreas Rheinhardt a7e54196cc avcodec/cbs: Only write extradata if there is something to write ...

It is e.g. legal for an ISOBMFF avcc to contain zero parameter sets.
In this case the annex B that we produce would be empty and therefore
useless. This happens e.g. with mov/frag_overlap.mp4 from the
FATE-suite.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

2022-09-25 14:53:49 +02:00

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