[FFmpeg-devel] [PATCH] Don't assume reading more frames in av_find_stream_info will change a CODEC_ID_NONE into something better

[elupus]

Currently av_find_stream_info will assume that reading more frames may
change a codec_id == CODEC_ID_NONE to something more exact. Asfar as i know
this will never happen.

So this patch changes the check to CODEC_ID_PROBE which absolutely could be
changed into something more exact. 

Reduces startup time of dvr-ms files specifically since they often have an
unknown codec in them.

Joakim
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