[Live-devel] Passing H.264 RTP stream to hardware decoder

[Felix Radensky]

Hi Ross,

On 11/29/2011 03:26 PM, Ross Finlayson wrote:
>> I'd like to create an application that gets H.264 stream over RTP and
>> passes it to hardware decoder. The decoder API expects a buffer 
>> containing
>> H.264 frame and frame size.
>>
>> Will the combination of H264VideoRTPSource and 
>> H264VideoStreamDiscreteFramer
>> will do what I need ?
>
> You probably need just a "H264VideoRTPSource".  (A 
> "H264VideoStreamDiscreteFramer" is needed only when you are 
> *transmitting* H.264 over RTP.)
>
> You may also need to call "parseSPropParameterSets()" to generate 
> SPS and PPS NAL units to feed to your decoder, in case these don't 
> appear in-line in the stream (or even if they do, if they don't 
> appear frequently).  See "liveMedia/include/H264VideoRTPSource.hh"
>
>


Thanks for a prompt reply. I guess I'm still a bit confused. How would 
my application access H264 frame
received by H264VideoRTPSource ? One of the requirements I have, is 
that decoder will ask for a frame
when it's ready to process one, so I need to have a routine that 
returns the last H264 frame and its size.

Thanks.

Felix.