[Live-devel] Attach sink to multiple sources

[Etienne Bömcke]

Hello,

My name's Etienne Bömcke and I'm a PhD. student in a belgian  
university. I'm working currently on a software using the liveMedia  
streaming library, and I've been confronted to a problem I can't solve  
by myself for now. So I thought I could post the problem here and ask  
for your opinion.
Here's the thing :
I have videos encoded using the H.264 codec which I'd like to stream  
with the liveMedia library. These videos are encoded in a specific way  
(using custom-defined slices) in order to allow one to replace  
completely a part of the sequence by a whole different video ("part"  
is used here in its spatial meaning, not temporal. For example  
consider a 176x144 pixels sized sequence, the objective would be to  
remove a bottom chunk, let's say the last 77 lines, and replace it by  
a 176x77 pixels sized sequence). The given replacement is achieved by  
switching parts of the sequence bitstream, i.e. without any decoding  
process.
As the original sequence comes from a streaming server, and the  
replacement should be done inside the software using liveMedia, I was  
wondering if it was theoretically possible to design a custom Sink  
class, which instances could be attached to various sources. I'm new  
to this library, you'll have to forgive me if my question is stupid or  
has already been answered many times, I just couldn't find any  
information about that specific problem anywhere.

Any feedback will be really appreciated.

Cheers,

Etienne


--
Etienne Bömcke
UCL - Laboratoire TELE
etienne.bomcke at uclouvain.be