[Asterisk-video] H264 and Grandstream

[Atle Samuelsen]

Hi Thanks John Martin

I got the H.263 format to work with ffasterisk.. but need to look
alittle more if it's possible to patch ffasterisk to support h264. 



- Atle

* John Martin <John.Martin at AuPix.com> [070130 11:35]:
> Hi Atle,
>   If you need H.263 then ffasterisk and gstreamer can create files in
> Asterisk format. 
> 
>   I've only tried gstreamer and I find I have to post process the files
> to get it to adhere to a reasonable packet size and delivery schedule. 
> 
>   There should be lots of discussion about both projects in the archives
> of this mailing list.
> 
>   I can't advise you on ffmpeg and x264 support for asterisk file
> formats, we gave up trying to use opensource h264 encoders and used our
> own in the end... If you're looking for something to test with then we
> have some test sequences that should work well for Grandstream on our
> website http://www.aupix.com/support/astvideo.htm 
> 
> John
> 
> -----Original Message-----
> From: asterisk-video-bounces at lists.digium.com
> [mailto:asterisk-video-bounces at lists.digium.com] On Behalf Of Atle
> Samuelsen
> Sent: 30 January 2007 08:49
> To: Development discussion of video media support in Asterisk
> Subject: Re: [Asterisk-video] H264 and Grandstream
> 
> Hi John Martin,
> 
> That's the reason *stupid* but ok.. Do you know if that's the same
> truuth to H263 ? And if it is.. Maybe we should talk to ffmpeg / x264
> people to make them add support for this in their software?
> 
> - Atle
> 
> * John Martin <John.Martin at AuPix.com> [070130 09:30]:
> > Hi Atle,
> >   Asterisk uses its own h264 file format. You have to chop up a
> standard
> > stream and re-assemble into a stream containing packets with
> (possibly)
> > multiple NALs and headers on the front of each packet. The headers
> > contain timestamp and packet lengths, plus any marker bits.
> > 
> >   We've developed our own solution for this but I'm not aware of any
> > opensource way of achieving it at the moment. I'm sure others will
> pipe
> > up if there is a way.
> > 
> > Regards, John
> > 
> > -----Original Message-----
> > From: asterisk-video-bounces at lists.digium.com
> > [mailto:asterisk-video-bounces at lists.digium.com] On Behalf Of Atle
> > Samuelsen
> > Sent: 29 January 2007 15:19
> > To: asterisk-video at lists.digium.com
> > Subject: [Asterisk-video] H264 and Grandstream
> > 
> > 
> > Hi guys,
> > 
> > I'm haveing some problems when trying to encode video with ffmpeg. Has
> > anybody been able to resample a avi file to h264 format so asterisk
> can
> > eat it?
> > 
> > I'm trying now with
> > 
> > ffmpeg -i /home/clona/test.avi -s 352x288 test.h264
> > 
> > When doing this I get a h264 encoded file (verified with x264) but I'm
> > not able to make view it when calling into asterisk from a GSV3000
> > phone.
> > 
> > Anybody have any ideas on what I'm doing wrong?
> > 
> > - Atle
> > 
> > 
> > 
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