Andreas Rheinhardt 4cb0dda555 avformat/avformat: Update av_read_frame() documentation ...

This commit updates the documentation of av_read_frame() to match its
actual behaviour in several ways:

1. On success, av_read_frame() always returns refcounted packets.
2. It can handle uninitialized packets.
3. On error, it always returns blank packets.

This will allow callers to not initialize or unref unnecessarily.

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

2020-03-29 03:58:30 +02:00

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