[FFmpeg-devel] HLS problem

Martin Storsjö martin
Sun Dec 5 19:36:42 CET 2010

On Sun, 5 Dec 2010, aviad rozenhek wrote:

> On Sun, Dec 5, 2010 at 13:40, Martin Storsj? <martin at martin.st> wrote:
> > On Sun, 5 Dec 2010, aviad rozenhek wrote:
> >
> > > I have an HLS stream sample, which is validated as working properly on a
> > > [mac] quicktime player [only the mac players supports HLS]
> > > however it doesnt play correctly in ffplay, and outputs some weird
> > errors.
> >
> > In which way doesn't it play correctly in ffplay? It seems to play just
> > fine to me, except that the server feeds data too slowly to be played back
> > properly here. With QuickTime Player, it seems to buffer much more data
> > before starting to play it. If I pause it in ffplay and allow it to buffer
> > up a bit more data before continuing, it plays just fine. I do get the
> > same errors, though.
> >
> the streams has frozen video at times, while audio playback is choppy.

> I just want to be sure that ffmpeg can play/transcode it properly. if the
> problem is just buffering,
> is there a parameter to increase initial buffering time?

Not that I know of, but try pausing it by pressing spacebar, wait until 
the aq and vq (audio queue and video queue) values grow larger, then 
resume the video and pause it again before the queues reach zero. Perhaps 
-noframedrop could help, too.

// Martin

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