[Live-devel] Difficulties with a live source
Brad Bitterman
bitter at vtilt.com
Mon Mar 9 14:02:58 PDT 2009
I have several live sources that do not have GOV's and they work
perfect with live555. You should not have a problem.....
BTW: Tell Rich Brad says hello :)
- Brad
On Mar 9, 2009, at 3:07 PM, Austin Snow (pftv) wrote:
> 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
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
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