[opendtv] Re: Fw: [Mp4-tech] Which Codec implementation is better [ software basedor Hardware Based ]
- From: "Ralph P. Manfredo" <rmanfredo@xxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 9 Feb 2005 10:58:47 -0800
Hi Shanmugam T:
While that is true, A/V sync is more difficult using software and requires a
dedicated CPU or a high performance CPU and/or both if you want to do
anything other than decode a TV program. Also, if changing to a program
that is compressed using a different algorithm, such as from MPEG-4 to
MPEG-2, unless the software is very complex, a new decoder will have to be
loaded and started, which will take a little time based on the OS, hard disk
performance, etc. We have done some significant tests and a software
decoder has never beat a hardware decoder in performance in both video
quality, A/V sync and in speed of coming on line.
Regards,
Ralph
Ralph P. Manfredo
President and CEO
rmanfredo@xxxxxxxx
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BroadBand Networks Corporation
2530 Berryessa Road, No. 237
San Jose, CA 95050
Phone: 408.988.2060
Fax: 408.988.2188
Cell: 559.289.2669
www.bbnc.com
Leaders in MPEG-2 and MPEG-4 video over ATM and IP Networks
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-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of Donald Koeleman
Sent: Wednesday, February 09, 2005 5:07 AM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Fw: [Mp4-tech] Which Codec implementation is better [
software basedor Hardware Based ]
From the mp4 tech list:
----- Original Message -----
From: "Shanmugam T" <Shanmugam.T@xxxxxxxxxxxxxxx>
To: "Prashant Desai" <prashant.desai@xxxxxxxxxx>
Cc: <mp4-tech-bounces@xxxxxxxxxxxxxxxx>; <mp4-tech@xxxxxxxxxxxxxxxx>
Sent: Wednesday, February 09, 2005 5:24 AM
Subject: Re: [Mp4-tech] Which Codec implementation is better [ software
basedor Hardware Based ]
> Hi Prashant,
>
> Software based codec has following advantages,
> i) Code can be ported across many platforms without any change or
> with minor modifications if required. It gives better re-usability and
> time-to-market
> ii) General DSP or RISC processor in a system, can be used for
> other codecs (audio etc) also.
> iii) Software updating will be easier than hardware modification.
>
>
> Please correct me if my understanding is wrong!
>
> Regards
> Shanmugam T
>
>
>
> Prashant Desai <prashant.desai@xxxxxxxxxx>
> Sent by: mp4-tech-bounces@xxxxxxxxxxxxxxxx
> 08/02/2005 04:54 PM
>
>
> To: mp4-tech@xxxxxxxxxxxxxxxx
> cc:
> Subject: [Mp4-tech] Which Codec implementation is better
[ software based or
> Hardware Based ]
>
>
>
> 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 .
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