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

Sergio Garcia Murillo sergio.garcia at fontventa.com
Tue May 6 14:35:52 CDT 2008


Yes, please, if anyone test it, send the results to the list so we can 
commit the patch to the repository.
A priori I see it quite clea, so I think it won't do any harm at all 
(another issue is if it solves the problem :)

BR
Sergio

Sven Brandau escribió:
> 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.
>>>





More information about the asterisk-video mailing list