[FFmpeg-devel] meaning of AV_PKT_FLAG_KEY

[Michael Niedermayer]

On Wed, Dec 04, 2013 at 07:44:53AM -0500, Don Moir wrote:
> I asked about this 2 years ago in ticket and no answer there.
> 
> I asked in user and no answer there.
> 
> So asking here what is the meaning of AV_PKT_FLAG_KEY and does it have any meaining to an application ?
> 
> The comment for AV_PKT_FLAG_KEY says it represents a key packet. If you decode this packet, the frame indicates it's a key frame.
> 
> If packet contains AV_PKT_FLAG_KEY it does not necessarily reflect a timestamp in index_entries which are known to be keyframes if marked as such.
> 
> Would be damn useful is this flag was dependable as a keyframe or start of keyframe. Right now I don't know if its a bug or what it is supposed to mean.

it means its a keyframe in the sense of a frame from which you can
start decoding

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Republics decline into democracies and democracies degenerate into
despotisms. -- Aristotle
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