[mythtv-users] how to get direct MPEG2 output

[Ken Bass]

Jelle,
You are definitely not running uncompressed. If my *approximation* is correct:
Assuming 30 fps, 720 x 480 pixels, 24 bits/pixel:
720 x 480 x 24 x 30 = 248,832,000bps ~ 31MB/sec * 3600secs/hour = 111 GB/hour
(74GB/hour at 480x480 which is mythtv default).

I have changed my recordings to use 352x480 which is called 1/2 D1 rate and it
is a resolution supported by the DVD standard. From what I understand there 
are only two
resolutions (in the NTSC world) that DVD supports - 720x480 and 352x480. If 
you are playing your DVD's using PC software sometimes those specs aren't 
enforced and you can get away with different resolutions but if your goals 
is to archive onto a DVD that is the most compatible with a range of 
standalone DVD players, I'm thinking only these two resolutions makes 
sense. By capturing at these resolutions I don't need to reencode. In 
theory you can then cut out the commercials for archiving without having to 
reencode. I still have not found a tool that lets me cut out commercials 
without reencoding. I've tried a ton of windows and linux programs and most 
of them either don't work or they screw up the audio/video sync. I'm still 
working on that.

At 11:23 AM 11/24/2003 -0500, you wrote:
>On Mon, 2003-11-24 at 09:44, Jelle Kalf wrote:
> > Hi,
> >
> > I tried recording 4:02 minutes of data and it came back to me with 151MB of
> > data. I have a PVR250 card which should have instand MPEG2 compression. 
> What did
> > I do wrong, because it looks like it's just outputting uncompressed data...
> >
> >
> > Jelle Kalf.
>
>151MB/4 minutes*60 minutes/hr ~ 2.2Gigs/Hr which is what I get with my
>PVR 250 and 350 under normal circumstances.  What makes you think this
>is wrong?
>
>
>-jose-
>
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