[FFmpeg-devel] h264 ts without timing and analyze duration

[Matthew Eaton]

When processing an h264 (ts) stream without timing info (sps
timing_info_present_flag = 0), analyzeduration/max_analyze_duration is
not used in av_find_stream_info().

As a result, the analyze loop aborts when MAX_READ_SIZE is reached.
This takes much longer than the maximum analyze duration (about 20
seconds on a 2 megabit stream).

Attached is a patch that uses dts to estimate the elapsed duration
when the packet duration is unknown. It's less than optimal, but fps
has not been calculated/estimated at that point in the function.
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