Re: [Linphone-users] Linphone video MP4V-Es

[Simon Morlat]

Hi,

MP4V-ES is the video mpeg4 bitstream
mp4 is a file format which usually contain a track of MP4V-ES and a track of 
another codec (ex: AMR).
If linphone only displays the first half of the pcitures, it's probably 
because the MP4V-ES frames it received are truncated. The source sending 
MP4V-ES is probably sending too large packets for the MTU (maximum transmit 
unit) of the network (usually around 1400 bytes).

Simon


Le mercredi 14 février 2007 15:42, Laurent Burgy a écrit :
> Hi,
>
> I am using linphone as a client for  Mp4 stream ... Does the ffmpeg
> MP4V-ES can read MP4 streams ?
> I have read this on the live-devel mailing list...
>
> > The RTP payload format for "video/MP4V-ES" (defined in RFC 3016) is very
> > simple: MPEG-4 video frame data is packed simply into RTP packets, with
> > no extra headers (apart from the usual 12-byte RTP header).
>
> I did perform some tests and the video seems ok except that it seems
> that there are half frame ( red and green ) which are added to the
> actual image...
>
> Is that a problem coming from a bad configuration of the source sending
> Mp4 ?
>
>
> Thx for the answers....
>
>
> laurent
>
>
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