Posted: Tue Oct 09, 2007 3:20 pm Post subject: [Asterisk-video] Ideas to improve audio and video synchroniz
Am Dienstag, den 09.10.2007, 13:48 +0200 schrieb Mustafa Ozveren:
Quote:
Hello,
Hi!
Quote:
I think it will not resolve the main LIP problem.
Its just a workaround in case of video switching.
Yeah, right - we have quite a lot of video switching (about every 10 or
20 seconds...).
Quote:
But its easy to implement :
You can write wrapping functions around sendFrame functions ...
and write a new function openVideo() that will reset the frame queue.
Why don't we just add this reset-call as the first line of mp4play and
rtsp? I think this is always the desired behaviour - if it is not we
could add a parameter to switch this on and off.
@Sergio: What do you think about this - at least we could test it? Can
you implement it?
Best Regards,
Thomas
Quote:
Best,
Mustafa Ozveren
On 10/9/07, Thomas Frieling <thomas.frieling@viif.de> wrote:
Hi all!
Everyone who uses the h324m-lib probably knows that often the
synchronization of audio and video is not perfect. This is
because of
the video-track being too big.
One idea we discussed was something like dropping all unsent
packages on
each new keyframe but this would result in a very bad video
flow.
Last night I got a new idea:
What if we drop all unsent packages when starting a new video
with
mp4play or rtsp. This would make the new video synchronous
again even
though the one before that was not.
What do you think about that? Would this be hard to implement?
Am Dienstag, den 09.10.2007, 23:42 +0200 schrieb Sergio Garcia Murillo:
Quote:
Could be an option, I'll try to take a look if it could be a good way of
passing the signal between the
app_mp4 and app_h324m without disturbing the other uses of app_mp4.
BR
Sergio
----- Original Message -----
From: "Thomas Frieling" <thomas.frieling@viif.de>
To: "asterisk-video" <asterisk-video@lists.digium.com>
Sent: Tuesday, October 09, 2007 12:45 PM
Subject: [Asterisk-video] Ideas to improve audio and video synchronization
> Hi all!
>
> Everyone who uses the h324m-lib probably knows that often the
> synchronization of audio and video is not perfect. This is because of
> the video-track being too big.
> One idea we discussed was something like dropping all unsent packages on
> each new keyframe but this would result in a very bad video flow.
>
> Last night I got a new idea:
> What if we drop all unsent packages when starting a new video with
> mp4play or rtsp. This would make the new video synchronous again even
> though the one before that was not.
>
> What do you think about that? Would this be hard to implement?
>
> Greetings,
> Thomas
>
>
> --
> www.ViiF.de - your Mobile Video Community
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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> ViiF Mobile Video GmbH, Poststr. 21-22, 10178 Berlin
> Cell: +49 (0) 173 63 62 62 3
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> E-Mail: thomas@ViiF.de
>
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