[Live-devel] Difficulties with a live source

[Austin Snow (pftv)]

Thanks Ross,
I'm now generating the header with the proper visual object sequence  
start code and supporting information.
000001B003000001B509000001000000012000C8888007D05841214103

Can I send this information into the MPEG4VideoStreamDiscreteFramer  
and/or MPEG4VideoStreamFramer without the next frame info and data? Or  
must they be sent together for the first frame to initialize things?

Also, I wanted to know, can the MPEG4VideoStreamDiscreteFramer and  
MPEG4VideoStreamFramer function without the group of VOP start code  
(000001B3xxxxxx)?   This is defined as optional in the mpeg4 standard.

Thanks
Austin

On Mar 3, 2009, at 11:13 PM, Ross Finlayson wrote:

>> Hello All,
>> I having some difficulty getting samples from a live source  
>> (QTCaptureSession) into MPEG4VideoStreamDiscreteFramer via a  
>> DeviceSource.cpp.
>>
>> The live data does not contain any 000001B3xxx000001B6..... (group  
>> of vop start code) or 000001B0.... (visual object sequence start  
>> code).  The only header info in the stream is the 000001B6......   
>> the vop start code.
>
> Then it appears that your data is not standards compliant (or  
> perhaps, not regular MPEG-4 Video data at all).  Are you sure that  
> it's not something else (e.g., not H.264)?
>
>>
>> Can you tell me if the MPEG4VideoStreamDiscreteFramer or  
>> MPEG4VideoStreamFramer can be used with this type of live source?
>
> No.
> -- 
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel

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