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Re: [Linphone-developers] H264 Support

From: Code Warrior
Subject: Re: [Linphone-developers] H264 Support
Date: Wed, 15 Jul 2009 22:40:47 +0530

Thanks for your reply Simon.
I'm using freescale iMX platform and want to use the H264 codec capability of the hardware. Clearly,
this needs changes to the linphone and ffmpeg source. Can you provide me some pointers in the code
where these changes would be needed? Though i'm working on the code, any directions in this regard
would surely be helpful.
I'm using Linphone version 3.1.2 with ffmpeg version 0.5.

On Wed, Jul 15, 2009 at 9:33 PM, Simon Morlat <address@hidden> wrote:

See RFC3984 (
Packetization-mode 1 is for H264 NALs that must be fragmented (because they
don't fit into the network mtu). Not all phone support this mode.
The other is packetization-mode=0 (the default), in which a NAL is sent
directly into RTP packets.
The one used is the first one accepted in the SDP answer, by default from
linphone to linphone it should mode 0.


Le mercredi 15 juillet 2009 12:36:42, Code Warrior a écrit :
> Hi,
> I want to use H264 encoding in linphone. While browsing the code, i could
> see two payload types defined for H264 (in linphonecore.c)
> + H264 Packetization Mode 1
> + H264
> What is the difference between the two and which one is used in Linphone ?
> /csj

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