[Asterisk-video] Synchronization problem between Voice and Video
tech at i6net.com
tech at i6net.com
Wed Jul 19 15:40:43 MST 2006
Sorry Sergio,
I have made some tests, it seems that with 10 fps, the synchro is OK.
I give here the URL for a demo clip (cartoon) for Asterisk.
http://www.i6net.com/vxml/videos/cartoon2.mov
http://www.i6net.com/vxml/videos/cartoon2.wav
http://www.i6net.com/vxml/videos/cartoon2.h263
i6net
Selon tech at i6net.com:
> I will send 2 URL of a WAV file and a H263 file of a long clip.
> I think you will see what I mean.
>
>
> i6net
>
>
> Selon Sergio García Murillo <Sergio.Garcia at ydilo.com>:
>
> > The timestamps and fps are correct (9000/90000) = 10 fps, and the are sent
> at
> > the correct time, each 100ms so I think that the everthing is perfect on
> the
> > asterisk video side....
> >
> >
> >
> > -----Original Message-----
> > From: tech at i6net.com [mailto:tech at i6net.com]
> > Sent: martes, 18 de julio de 2006 22:07
> > To: Development discussion of video media support in Asterisk; Sergio
> García
> > Murillo
> > Cc: Development discussion of video media support in Asterisk
> > Subject: RE: [Asterisk-video] Synchronization problem between Voice and
> Video
> >
> > Hola Sergio,
> >
> > The video clip have 10 fps.
> > This generate H263 RTP trames with timestamp incremented by 9000.
> > Every 9000 a have the related trames (one or more) from the frame.
> >
> >
> > No. Time Source Destination Protocol
> Info
> > 1885 15.855254 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41604, Time=1390410, MarkMODE A H263
> > payload (PSC)
> > 1896 15.956293 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41605, Time=1399410, MarkMODE A H263
> > payload (PSC)
> > 1908 16.057178 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41606, Time=1408410, MarkMODE A H263
> > payload (PSC)
> > 1918 16.155226 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41607, Time=1417410, MarkMODE A H263
> > payload (PSC)
> > 1930 16.255798 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41608, Time=1426410, MarkMODE A H263
> > payload (PSC)
> > 1940 16.354994 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41609, Time=1435410, MarkMODE A H263
> > payload (PSC)
> > 1951 16.455823 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41610, Time=1444410, MarkMODE A H263
> > payload (PSC)
> > 1962 16.555171 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41611, Time=1453410, MarkMODE A H263
> > payload (PSC)
> > 1973 16.656598 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41612, Time=1462410, MarkMODE A H263
> > payload (PSC)
> > 1984 16.755210 192.168.1.252 192.168.1.2 H.263
> > Payload
> > type=ITU-T H.263, SSRC=329143181, Seq=41613, Time=1471410, MarkMODE A H263
> > payload (PSC)
> >
> > i6net
> >
> >
> > Selon Sergio García Murillo <Sergio.Garcia at ydilo.com>:
> >
> > > tech at i6net.com wrote:
> > > > Hello guys,
> > > >
> > > > I have made a tool to convert a 3gp file to a wav and h263(asterisk
> > > > format with payload).
> > > > With long clips (more than 1mn), I loose the Voice/Video
> > > > synchronisation .
> > > > Each Video packet have a timestamp, it seems to be relative, and
> > > > there is no correction to correct the time lost (by the scheduling
> > > > system).
> > >
> > > Are you sure the timestamps are correct?
> > > How many fps is the video and what are the timestamp values?
> > >
> > > Greetings
> > > Sergio
> > >
> >
>
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> > > Solutions, S.A. shall be understood as neither given nor endorsed by
> > > it.
> > >
> >
>
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> > This message and any files transmitted with it are confidential and
> intended
> > solely
> > for the use of the individual or entity to whom they are addressed. No
> > confidentiality
> > or privilege is waived or lost by any wrong transmission.
> > If you have received this message in error, please immediately destroy it
> and
> > kindly
> > notify the sender by reply email.
> > You must not, directly or indirectly, use, disclose, distribute, print, or
> > copy any
> > part of this message if you are not the intended recipient. Opinions,
> > conclusions and
> > other information in this message that do not relate to the official
> business
> > of
> > Ydilo Advanced Voice Solutions, S.A. shall be understood as neither given
> nor
> > endorsed by it.
> >
>
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> >
>
>
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