[FFmpeg-user] HEVC decoding from multicast

Carl Eugen Hoyos cehoyos at ag.or.at
Wed Feb 5 17:48:37 CET 2014

Andrey Utkin <andrey.krieger.utkin <at> gmail.com> writes:

> I think right solution would be to attach AVFormatContext 
> on UDP stream, an demux it until you have got AVPacket of 
> needed video stream, with AVPacket.flags & AV_PKT_FLAG_KEY

Are you sure that for all valid hevc streams this flag will 
ever be set?
(This is not true for h264 where valid streams do not 
necessarily contain an I-frame.)


> As a hint you could check AVPacket.flags for 

Does this flag really have any relevance?
(I don't mean for hevc streams but in the general case:
When is it useful?)

As said, the original problem (corrupt frames from the 
beginning of a cut hevc stream are output) is a missing 
feature of a new decoder, the default behaviour will be 
not to show those frames.

Carl Eugen

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