[mythtv-users] How will changing from 480x480 to 720x480 affect me?

[Jake Thompson]

Interesting this should come up, I was testing and playing around the other
night.

I run my TV at 640x480, so I had my PVR-150 recording at 640x480.  To me the
picture looked blury (6000-10000 bitrate).   So, I decided, what the hell,
and put it to 720x480.  To me the picture is crisper and less blurry.

Is there any real explination for this, or am I just mental?

I am using XvMC on an NVidia card for output.

-Jake


On 11/30/06, Jeff Simpson <jeffsimpson at alum.wpi.edu> wrote:
>
> > Hmmm, conflicts with Jim's response...
> > Can you post your file sizes for a 1 hour show?  Mine are 2.2GB each
> > at 480x480, all other defaults on my PVR-500.
>
> I record everything at 720x480 on a PVR-350, and I'm at about 2.2 gigs
> an hour as well.
>
> I actually just lost my configuration and had to switch from the
> default 480x480 back to the 720x480 I normally use.
>
> Here's an episode of House that I recorded with the default settings
> (480x480). Filesize is 2332995584 (2.2G). Here are some stats gleaned
> from mplayer:
>
> VIDEO:  MPEG2  480x480  (aspect 2)  29.970 fps  6000.0 kbps (750.0kbyte/s)
> Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> VO: [xv] 480x480 => 640x480 Planar YV12
>
> And to compare, here's another more recent hour-long show, but at
> 720x480. Filesize is 2332057600 (2.2G). Same mplayer stats:
>
> VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  6000.0 kbps (750.0kbyte/s)
> Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> VO: [xv] 720x480 => 720x540 Planar YV12
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