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

[Donald Koeleman]

You are partly mistaken. Decoders are different, how ever a HD decoder is
supposed to also decode SD, so you just require a single decoder/codec.
d.
----- Original Message ----- 
From: "Prashant Desai" <prashant.desai vsnl.co.in>
To: <opendtv freelists.org>
Sent: Tuesday, February 15, 2024 11:26 AM
Subject: [opendtv] HDTV and SDTV Decoders for MPEG-2 and MPEG-4 AVC
Hello all
    is HDTV and SDTV decoders for MPEG-2  or MPEG-4 AVC  are same   ?
    i think both are different so  to support   one HDTV channel   MPEG-2
and Two  SDTV channel of  [ one of MPEG-2   and one of MPEG-4 AVC ]  , it
required a STB having total 3 decoders supporting   [ one decoder for MPEG-2
HDTV ,  one Decoders of MPEG-4 AVC SDTV and one decoder of MPEG-2 SDTV  ]
so total 3 independent decoders ?
  Please correct me if my understanding on the same is wrong
regards,
Prashant Desai