[Asterisk-video] mp4save(): different audio and video lengths

[Sven Brandau]

Hi @All,

recording to the questions, I've send you my patch.

Please note that the patch is NOT really tested - please try it
and send me your results.

Patch it with (R213):
patch -i app_h324m.c.patch

Regards,
Sven




Sergio Garcia Murillo wrote:
> Hi Sven
> 
> Could you send me a patch with oyour solution?
> 
> BR
> Sergio
> 
> ----- Original Message -----
> From: Sven Brandau [mailto:brandau at gmx.de]
> To: asterisk-video at lists.digium.com
> Sent: Mon, 05 May 2008 15:30:33 +0200
> Subject: Re: [Asterisk-video] mp4save(): different audio and video lengths
> 
> Hi @All,
> 
> I'm working on a solution.
> 
> I've found that some mobile phones (Moto K3) sending out AMR No-Data
> packets, instead of comfort noise frames (AMR-SID). So I replaced the
> No-Data packets with the last received AMR-SID frame (file app_h324m.c /
> function create_ast_frame). This solution worked fine for me.
> 
> The only thing is, that the recording for audio and video starts on a
> different time - audio and video is already not synchronized, but only
> a few milliseconds. It depends on the mp4save option /V - waiting for the
> first I-frame.
> 
> I'm already working on this issue and will announce my solution here on the
> mailing list.
> 
> Regards,
> Sven
> 
> Low Yu Siang wrote:
>> Hi,
>>
>> May I know if anyone has solved the recording
>> audio/video length problem?
>>
>> Tech from i6net wrote :
>>> Hi,
>>>
>>> I am going to work on it.
>>>
>>> But for the moment, I am qualifying the video 
>>> transcoder and the h324m module.
>>> The Gateway (SIP -> 3G or 3G -> SIP) configuration
>> locks after some secondes or minutes if it use the
>> transcoder.
>>> 2 ways for the recording :
>>> - Replace the silence by generating the AMR datas
>> with a audio silence.
>>> - Check if we can timestamps correctly the AMR
>> packets in the MP4/3GP hinted file.
>>
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