[opendtv] Re: How important are new Codecs wrt OTA Broadcasting?
- From: "Kon Wilms" <kon@xxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx, OpenDTV <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 21 Feb 2006 15:23:06 -0500
Consider the AVC codec comparison here:
http://www.doom9.org/codecs-main-105-2-hq.htm
The choice is not so simple.. even when choosing a single AVC encoder.
Also there is no guarantee that encodings done with optimizations (CABAC
etc.) will play on many standalone players.
The only way OTA can hope to compete with cable and sat IMHO is to go
for a low-bitrate codec that handles HD, and offer a minimum of 4 or
more channels. For those stations with not enough content, step the
programming out over multiple channels and offer NVOD, or sell your
bandwidth. Out of the box with no tweaking, 900Kbit SD AVC is quite
watchable, and 2.5Mbit 720p too. In fact, even 960x540 3Mbit ASP xvid
looks great. Hell, start datacasting for VOD. You can store a bunch of
movies on a cheap 8gb CF disk. This stuff should be a no brainer.
The only way to prevent the multi-codec insanity is to use DSP-based
decoders allowing for upgradable codecs.
Also, why did you not mention Dirac? :-)
MHO
Cheers
Kon
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