[Asterisk-video] app_mp4 for sip

[Manos Megagiannis]

App_mp4 works fine for me with sip. (atleast with h263, h263+ video,
and uLaw or aLaw audio.
Check the audio codec on your sip client.
mp4info <filename> will give you the information about the recorded
codec and hinting.

To create mp4s with h263+ and uLaw try this bash script:

#!/bin/bash
# argument1: input filename
# argument2: output filename
echo "*** ffmpeg audio ***"
ffmpeg -y -i $1 -ar 8000 -ac 1 -ab 64 -f mulaw temp1.pcm
echo "*** pcm2mp4 ***"
pcm2mp4 temp1.pcm temp1.mp4
echo "*** ffmpeg video ***"
ffmpeg -y -i $1 -s qcif temp1.h263
mv temp1.h263 temp1.263
echo "*** mp4creator ***"
mp4creator -c temp1.263 -H temp1.mp4
mv temp1.mp4 $2
rm -f temp1.*


Manos


On 7/19/07, Atle Samuelsen <clona at cyberhouse.no> wrote:
> * Klaus Darilion <klaus.mailinglists at pernau.at> [070719 16:34]:
> > Hi Sergio!
> >
> > up to now I've only used mp4play to feed h324m_gw. Today I have also
> > tried but I do not have much luck:
> >
> > 1. mp4save(). The video is saved, but no audio
> >
> > 2. mp4play(). Playing back the previously recorded .mp4 file works.
> >
> > But I can not generate an mp4 file which is accepted by mp4play.
> >
> > Then I removed the hint track from the mp4save() video and added a new
> > hint track with mp4creator. Then, this video also does not work anymore.
> >
> > Thus, I suspsect that there is something wrong with the hint track. How
> > can I create an mp4 file suitable for mp4play?
>
>
>
> I ack this behaivour..  Also if you use something wich sends somewhat
> bigger resolution, the mp4save thing crashes..
>
> - Atle
>
> >
> > thanks
> > klaus
> >
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