[opendtv] Re: Pros/Cons of DSP processor based MPEG software decoder or hardware based MPEG decoder
- From: Prashant Desai <prashant.desai@xxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 08 Feb 2005 23:45:12 +0530
Hi Ralph /Donald
thanks a lot to both of you
do you mean that license cost for MPEG-4 can be avoided or it's not
required to pay the license cost for MPEG-4 if it's implemented using a
software and DSP processor ? and one has to pay the license cost only if
it's implemented on chip by hardware ?
btw , what typically is the license cost that one has to pay for MPEG-4 ?
any pointers from where i can get this information ?
i actually wanted to understanding the performance etc trade offs that
one needs to consider while choosing either software/DSP processor based
decoder implementation or chip/hardware based implementation of MPEG-4
.......any inputs for the same would be highely appretiated
warm regards ,
Prashant Desai
----- Original Message -----
From: "Ralph P. Manfredo" <rmanfredo@xxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Tuesday, February 08, 2005 10:52 PM
Subject: [opendtv] Re: Pros/Cons of DSP processor based MPEG software
decoder or hardware based MPEG decoder
> Donald:
>
> Donald:
>
> That is a good and quick response to the question. However, I believe you
> left out a couple of very important reasons as to the why the H.264 has
not
> been implemented in chip form yet. One has to do with the time it takes
to
> go from standard release to a released chip. That is why the software
> versions are out now I believe. Second and I believe is more important is
> the cost to deliver and view a program that is MPEG-4 H.264 compliant due
to
> the total licensing costs. These costs are a significant factor I believe
> and MPEG-LA and their outrageous licensing scheme may kill MPEG-4. I
don't
> believe consumers in general will accept the higher costs to watch a
MPEG-4
> program vs. an MPEG-2 program. This of course is my opinion, but I am
part
> of a next generation entertainment system standards committee, and we are
> seriously considering scrapping MPEG-4 due to the high licensing costs to
> view a program. These costs presently outweigh the advantage saved by
> storage requirements as disc drive costs are coming down and capacity is
> going up and this is a one time cost.
>
> Ralph
>
> Ralph P. Manfredo
> President & CEO
>
> rmanfredo@xxxxxxxx
>
> ************************************************************************
> BroadBand Networks Corporation
> 2530 Berryessa Road, No. 237
> San Jose, CA 95050
>
> Phone: 408.988.2060
> Fax: 408.988.2188
>
> www.bbnc.com
>
> Leaders in MPEG-2 and MPEG-4 video over ATM and IP Networks
> ************************************************************************
>
>
> -----Original Message-----
> From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]
On
> Behalf Of Donald Koeleman
> Sent: Tuesday, February 08, 2005 5:35 AM
> To: opendtv@xxxxxxxxxxxxx
> Subject: [opendtv] Re: Pros/Cons of DSP processor based MPEG software
> decoder or hardware based MPEG decoder
>
> MPEG 2 MP@ML decoder chips are generaly all hardware, the technology on
> these chips has matured over the past decade and there is no real need to
> update the decoding capabilities after the box leaves the factory. MPEG 4
> Main profile standard definition decoders are available in hardware,
however
> anything newer or higher spec, like H.264 or WM9/VC1 uses software codecs.
> Several reasons, largely to do with economies of scale, as numbers are
still
> relatively small. Codecs are still under development, so generations of
> capability sets replace eachother quite rapidly, so no time to design and
> build a hardware implementation and recoup cost. The market is still split
> between MPEG and Microsoft, and large operators are still making up their
> minds as wich platform to choose and current service providers do not want
> to be locked in right at the start of the development of this technology.
>
> Donald
> ----- Original Message -----
> From: "Prashant Desai" <prashant.desai@xxxxxxxxxx>
> To: <opendtv@xxxxxxxxxxxxx>
> Sent: Tuesday, February 08, 2005 12:25 PM
> Subject: [opendtv] Pros/Cons of DSP processor based MPEG software decoder
or
> hardware based MPEG decoder
>
>
> Hello All
> i am new to this digital content would , i would like to know and
> understand the Pros/Cons of different methods of implementation of the
> MPEG -4 , MPEG-2 decoder is better compared to the other .
>
> Based on my current understanding there are two ways by which the MPEG-4
> /MPEG-2 decoder's can be implemented the first method is using a combo of
> DSP processor and software implementation of MPEG-4/2 decoder whereas the
> other is to implement the full hardware based MPEG-4/2 decoder , i think
> it's always better to have 100% hardware based
> decoder from performance point of view , i dont know what are the
advantages
> of using a software based MPEG-4/2 decoder on the top of DSP processor
> ..........
>
> i would be really grateful if you guys can provide your opinions and
imputs
> in this regard
>
> warm regards,
> Prashant Desai
>
>
>
>
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