[Mp4-tech] [opendtv] Re: HDTV and SDTV Decoders for MPEG-2 andMPEG-4 AVC

[Prashant Desai]

Craig
 thanks for your detailed reply ........i got your point...... what i am not
able to understand wrt to the STB is
see in case of cable based iTV deployments  they require  multiple tuners
[ say 2 tuners ] so that the user can do both  ......i mean user can watch
TV and simultaneously  record the TV programe for PVR ......... correct ?
but since in case of IPTV  there isnt any concept of tuners since it's
purely on IP multicast so in such case what is required on the STB which is
IP equivelent of STB tuners .....so the user can do both the things at the
same time that is user can watch the TV and also record the programe at the
same time
regards,
Prashant Desai
----- Original Message ----- 
From: "Craig Birkmaier" <craig pcube.com>
To: <opendtv freelists.org>
Cc: <mp4-tech lists.mpegif.org>
Sent: Tuesday, February 15, 2024 10:19 PM
Subject: [Mp4-tech] [opendtv] Re: HDTV and SDTV Decoders for MPEG-2
andMPEG-4 AVC
> At 9:45 PM +0530 2/15/05, Prashant Desai wrote:
> >no if i wants to decode 3 different channels through STB then 3 decoders
> >right ?
> >i mean 2 channels for TV [PiP ] and one for PVR support ? am i right ?
>
> How many streams can be viewed from one box/ I suspect it is only ONE.
>
> You do not need a decoder for the PVR, as you only need to store the
> compressed IP packets - decoding only is necessary when you want to
> view the content. You should be able to find a SINGLE decode design
> that can support all of the codecs that you may use. Since you are
> just starting the system, an H.264 decoder can do the job - just
> choose the level of performance you want to support (SD or SD & HD).
> IF you also want to decode MPEG-2, there is a good chance that the
> commercial decoder chips will do that too (but the royalties will be
> higher).
>
> Regards
> Craig
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