[Asterisk-video] app_transcoder and videocalls

[Sergio Garcia Murillo]

  I am using x264 through ffmpeg so I cannot assure everything is set up 
exactly the same, but the latency is good anyway.

In the MCU server I did integrate the x264 directly and set up the 
zerolatency and some other parameters directly.

Best regards
Sergio

El 02/09/2010 16:22, João Serra escribió:
> Hi Sergio, thanks for your reply.
>
> Why needs asterisk modifications? And Where exactly on the source?
> In the case of h264 encoding, does app_transcoder use the new
> real-time features/options present in new versions of
> x264(http://x264dev.multimedia.cx/?p=249)
>
> Thanks.
>
>
> On Thu, Sep 2, 2010 at 14:26, Sergio Garcia Murillo
> <sergio.garcia at fontventa.com>  wrote:
>>   El 21/08/2010 0:24, João Serra escribió:
>>> Hi, currently playing with SofiaSIP library and i'm thinking in coding
>>> a video capable(via gstreamer) SIP UA for a Linux STB connected to a
>>> USB Webcam.
>>> However, all consumer-level webcams output only MJPEG video and i
>>> cannot afford to do any kind of video transcoding on the STB
>>> itself(the STB has a 300mhz mips cpu)
>>>
>>> So, can i use Asterisk with app_transcoder to transcode mjpeg
>>> videocalls to/from h263 or h264. Also, what delay will app_transcoder
>>> introduce?
>>>
>>> Thanks.
>>>
>> Hi Joao,
>>
>> Currently app_transcoder does not support mjpeg decoder, it could
>> support it easily, but you would also need to patch asterisk to support it.
>> The delay introduced by the app_transcoder is minumun, jsut the cpu time
>> needed to decode and re-encode the frame, so it varies depending on the
>> video codec, cpu and size of the frame.
>>
>> Best regards
>> Sergio
>>
>>
>> --
>> _____________________________________________________________________
>> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>>
>> asterisk-video mailing list
>> To UNSUBSCRIBE or update options visit:
>>    http://lists.digium.com/mailman/listinfo/asterisk-video
>>