All things related to multicast

[Marshall Eubanks <>]

H.264 Muticasts can be played by just clicking on a SDP file link in a  
web site, or by listening to the
multicasts with Quicktime player and creating a reference movie.

Regards
Marshall

On Jun 12, 2008, at 8:29 PM, Frank Fulchiero wrote:

> Hi Richard, thanks for the detailed and informative answer. You must  
> be busy getting ready for Infocomm.
>
> Now, how can a Mac detect your H.264 SAPs for multicast streams, if  
> not with VLC?
> QT is great technology, in my opinion, though there is always room  
> for improvement and it's hard to read Apple's tea leaves. But it  
> does not detect SAPs.
>
> BTW we do have multicast throughout the academic network, but only  
> the admins and I know it...  :-)
> Not ready to advertise it. I am amazed a student fooling around with  
> VLC has not yet discovered SAPs.
>
> Good luck with your products, I'm sure they will be a good ones.
>
> Frank
>
> On Jun 12, 2008, at 7:32 PM, Richard Mavrogeanes wrote:
>
> > Frank,
> >
> > MPEG-4 part 10 delivery is the same as MPEG-4 part 2 delivery:  RTP  
> > via RTSP or via multicast/SDP.  It means you can use any player or  
> > STB that supports standards (ISMA 2.0). Players include QuickTime  
> > player, VLC, etc.  Transport Stream is what carriers use for "IPTV"  
> > to leverage their previous investment in TS muxes, etc.   
> > Ultimately, we'll support TS too so that certain consume-class  
> > "IPTV" devices can be provisioned.
> >
> > QT has some advantages, as it will support the mandatory Closed  
> > Caption (mandatory per ADA and US Sec. 508), while VLC does not as  
> > far as I am aware (although CC is not in our very first firmware  
> > release).  More importantly, QT player has the mandatory royalty  
> > for decoding both the video (MPEGLA) and the AAC audio (Dolby- 
> > spinout Via) paid while VLC remains illegal to use at least in the  
> > United States (again, I have no axe to grind here...I frankly don't  
> > care what someone uses to receive and decode our audio/video as  
> > long as they are happy...but I do want our customers to be safe).
> >
> > Everyone will have lots of opportunity to play with the live 7x24  
> > HD and SD broadcasts I'll have up soon.  In addition to advertising  
> > the stream via SAP, I'll point you to the automatic SDP file  
> > generated and hosted by the device which you access via HTTP.  I'll  
> > also provide RTSP address for those unable to join the  
> > multicast...a problem that continues to plague desktops in  
> > virtually every institution I visit (does Connecticut College allow  
> > multicast to reach every desktop?)
> >
> > /rich