[MPEGIF Discuss] RE: AVC-derived scalable video coding?

[Rob Koenen (MPEGIF)]

Ben,
> Speaking of that, is there anything going on with that 
> which can be shared publicly.  

The nature of all the work going on in MPEG can be shared publicly, although
some working documents may be kept internal and ISO does not allow
publication of draft standards beyond a certain stage of completion.
MPEG is working on scalable video coding and initial evidence is very
promising. A call for proposals is being readied, and may go out in a few
meetings (there are two more meetings this year, one in October and one in
December). It may be possible to arrive at completion of such a standard
sometime in 2005, I guess, but this is going out on a limb. 
I am not 100% sure what the thoughts in the JVT are about adding some sort
of scalability to AVC. I know the idea has been coined a couple of times.
That said, the AVC codec does allow seamless switching between streams of
different rates, which would not qualify as true scalability (being able to
derive useful video from subsets of the bitstream), but it does effectively
provide the same functionality in many services and applications.
MPEG-4 part 2 has some scalability and it seems that there is interest in
Simple Scalable Visual Profile in mobile environments. But for many types of
scalability, including the Fine Grain Scalability currently in MPEG-4 part
2, the market seems to perceive the bitrate penalty on the highest quality
as still too much.
Regards,
Rob
> -----Original Message-----
> From: Ben Waggoner [mailto:ben interframemedia.com] 
> Sent: Friday, September 19, 2023 14:15
> To: rob.koenen mpegif.org; vsathe multiratesystems.com; 
> discuss lists.mpegif.org
> Subject: AVC-derived scalable video coding?
> 
> 
> Rob,
> 
>     Speaking of that, is there anything going on with that 
> which can be
> shared publicly.  I've said for the while that the lack of a 
> good scalable
> implementation is keeping MPEG-4 from being competitive in real-time
> streaming over the public internet.
> 
>     In the interview I did with Leonardo Chiariglione at NAB, 
> he said a good
> scalable MPEG technology might not arrive until 2006.
> 
> Ben Waggoner <http://www.benwaggoner.com>
> Compressed Video Consulting, Training, and Encoding
> 
> My Book:            <http://www.benwaggoner.com/books.htm>
> Cleaner e-book:     <http://www.cmpbooks.com/cleaner>
> 
> 
> 
> 
> on 9/19/03 12:37 PM, Rob Koenen (MPEGIF) at 
> rob.koenen mpegif.org wrote:
> > For scalable coding covered by MPEG-4 part 2, the current
> > licensing pool seeks to include as much IP as possible.
> > 
> > For scalable coding based on AVC - any pool covering scalable
> > coding would be facilitated by a specification. There isn't
> > currently any such specification, and I am not aware of
> > non-spec related initiatives to set up any pool.
> 
> 
>