[mythtv-users] FW: Pvr250 issues - any suggestions?

[Henk Poley]

Op zaterdag 3 april 2004 14:22, schreef J. Donavan Stanley:
> Henk Poley wrote:
> >I've thought about this before, why doesn't MythTV keep track of a video
> >source is interlaced or not. So you can specify per recording/transcoding
> >profile (should also be seen as a video source) and front-end if you want
> > to deinterlace, without the possibility of deinterlacing twice which
> > would introduce more artifacts.
>
> What are you recording with Myth that's not interlaced with the
> exception of some HDTV streams?

Okay, let me explain that (maybe I should have done that right away, or maybe 
not...):

1. MythTV 0.14 (or earlier) doesn't record MPEG4 in interlaced mode.
2. My SIS 650 S-Video out outputs non-interlaced, or at least the overscan is 
not enough to not see the interlaced lines.
3. I use a normal 'analog' TV grabber card, this video source is interlaced.
4. Recording an interlaced source with non-interlaced MPEG4 and then 
deinterlace it at playback, results in poorer quality (more 'noise', so more 
artifacts) than deinterlacing before encoding it as non-interlaced MPEG4. 
(got that? ;-) )

I only wanted to explain that currently you can't have an interlaced and then 
a deinterlaced video source displayed on the same frontend without switching 
the playback deinterlace filter on/off.

	Henk Poley <><