[Libav-user] Is it possible to detect unused/invalid packets (without decoding)

Anton Shekhovtsov shekh.anton at gmail.com
Wed Jan 28 14:51:53 CET 2015

2015-01-28 15:34 GMT+02:00 Nicolas George <george at nsup.org>:

> Le nonidi 9 pluviôse, an CCXXIII, Max Vlasov a écrit :
> > The idea was to read all packets saving pts and keyframe flag (without
> > decoding) and make a list of them in order of ptses. After this we have a
> > ready FrameCount and when one needs to jump to an exact frame number
> Why do people here always want to work with frame numbers? Frame numbers
> are
> unreliable, they are a remnant of the time where containers could only do
> constant FPS.
> The correct way of identifying a frame is not its number, it is its
> timestamp.
> Regards,
> --
>   Nicolas George
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user
Frames are important entities if the application is video editor.
It wants to treat video as a sequence of images. It wants discrete timeline
where each frame is a unit.
How about buffering 40ms of video in memory? Vague. 40 frames? Required
memory=frame_size*40. Simple. etc
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://ffmpeg.org/pipermail/libav-user/attachments/20150128/58020935/attachment.html>

More information about the Libav-user mailing list