[Libav-user] Criteria for h.264 key-frame detection

Robert Krüger krueger at lesspain.de
Mon Oct 21 15:33:19 CEST 2013

On Mon, Oct 21, 2013 at 1:04 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Robert Krüger <krueger at ...> writes:
>> I'll be more than happy to do that. How do you want
>> me to do it? Open a ticket (if so, what would be an
>> appropriate topic/title in your opinion?) or by
>> some other means?
> Whatever seems appropriate and simple to you, as you
> know there is a ftp/http upload site, you can use
> http://www.datafilehost.com/ and judging from links
> other people use, there is a possibility to use
> Google docs to provide files.

I uploaded two shortened samples from the same camera to

If my debug output is correct, both contain no B-slices/frames (I just
noticed that) but they do contain I-slices/frames. If I am not missing
something, those I-Frames should be valid random access points then.

Neither demuxer nor decoder report a keyframe after the first frame. I
guess a ticket could be justified. You decide.

>> heuristic (last week something probably related was
>> committed).

> Even better. Which commit are you talking about?

Could you please answer that?

Thank you.


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