[mythtv-users] Changing width resolution for PVR-250/350's

[Greg Estabrooks]

> But I also saw a neglible change in file sizes, too.  Is this 
> the expected behavior?

 Certainly, bitrate is bitrate regardless of the resolution. 2Megabits at 
480x480 is just as much data as 2Megabits at 720x480. The difference
is how much data per sampled pixel. Often lowering the resolution and 
turning up the bitrate can increase picture quality but it also depends
on just how clean your source is to start. If you've already got a clean source
then you can get away with a lower bitrate.

 Plus analog cable broadcasts are normally broadcast in a "resolution"
of close to 544x480 in most markets. People keep focusing on 720x480
as it is the most well known NTSC DVD resolution.

> I didn't restart mythbackend after each set of changes, and I'm not
> sure if they take effect instantly or not.)

 They would take effect immediately so the next time a recording is started
they would use the new profile information.


> mplayer or something, would using 640x480 or some other size make for
> a more reasonably-transportable setting?  Any other comments?

 What do you mean by transportable in this context? Personally all of
my recordings are done at a resolution of 544x480, but of course ymmv.