Re: [Linphone-users] lipsync by ortp for video and audio

[Kannaiyan]

Thanks Simon.

But How will I use the function rtp_session_recv_with_ts.
I need to give the exact timestamp right? if I give a differnent one + or -.
It may be ending up in 0 packets right.

How will I pass the timestamp value to the receiving function?

Regards,
Kannaiyan


----- Original Message -----
From: "Simon Morlat" <address@hidden>
To: "Kannaiyan" <address@hidden>
Cc: <address@hidden>
Sent: Saturday, February 17, 2007 6:19 PM
Subject: Re: [Linphone-users] lipsync by ortp for video and audio


Video timestamps should reflect the sampling instant of the picture.
There is no requirement that they increment with a fixed amount of units.
Read RFC2429(h263) or RFC3016 (Mpeg4).

Simon

Le mercredi 14 février 2007 01:49, Kannaiyan a écrit :
> Thanks.
> There is a problem with the video. The timestamp for vide varies for the
> incoming packet, It is not same like the audio incrementing by certain
> milliseconds. How did you sort this problem?
>
> /kans
>
> ----- Original Message -----
> From: "Simon Morlat" <address@hidden>
> To: <address@hidden>; "Kannaiyan" <address@hidden>
> Sent: Tuesday, February 13, 2007 8:54 PM
> Subject: Re: [Linphone-users] lipsync by ortp for video and audio
>
>
> Hi,
>
> I know the lipsync mechanism but unfortunately it is not implemented in
> oRTP or mediastreamer2.
> Actually linphone sends audio and video synchronised, so expects to
> receive
> them synchronised too.
>
> Simon
>
> Le mercredi 7 février 2007 02:41, Kannaiyan a écrit :
> > Hi,
> >
> > Is there is any mechanism to lipsync for audio and video witn ortp?
> > lipsync is a mechanism in the rtp layer to supply the same rtp
> > synchronised
> > for audio and video.
> >
> > So you won't see what one talked before.
> >
> > Thanks.
> >
> > Regards,
> > Kannaiyan
> >
> >
> >
> >
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