[mythtv-users] 720p harder to decode than 1080i?

[Yeechang Lee]

Mark Chang <mark.chang at gmail.com> says:
> In particular, CBS seems to broadcast in a higher resolution than
> other channels. The 1 hour recording of "NUMB3RS" takes 7+GB, while
> the same length of "Desperate Housewives" takes only like 5GB. Am I
> assuming right that different channels broadcast at different rates?

From
<URL:http://www.gossamer-threads.com/lists/mythtv/users/175520#175520>:

    * Digital non-HDTV channels generate the smallest files at about
      900-1000MB/hour for a movie channel and up to 1200MB/hour for a
      cartoon (with probably a lower-quality feed).
    * Analog channels such as TCM generate about 2900MB/hour due to
      the extra noise. HDTV movie channels generate about
      4400MB-4700MB/hour.
    * A high-bandwidth HDTV channel generates 7400-7700MB/hour . . .
    * Except for ABC and Fox whose 720p programs record at about
      5.8GB/hour.

-- 
Yeechang Lee <ylee at pobox.com> | +1 650 776 7763 | San Francisco CA US