Hallo

> I'm trying to get a reasonable DVD/TV output, and I'm having flickering
> problems. I captured a PAL VHS source using a DC10+ and 1.6.1. My MJPEG file
> has these attributes:
If you have VHS why dont you record at half size and the encode at have
size ?
That would speed up things, and you can generate a DVD at have size PAL
size. dvdauthor 0.4.1 allowes this :)

> --DEBUG: [lav2yuv]    width:            768
> --DEBUG: [lav2yuv]    height:           576
> --DEBUG: [lav2yuv]    interlacing: top field first
> --DEBUG: [lav2yuv]    frames/sec:    25.000
> 
> Following the HOWTO, I tried encoding to DVD acceptable format using this:
> 
> lav2yuv _30secs.eli |
> yuvdenoise |
> yuvscaler -O SIZE_720x576 |
> mpeg2enc -f 8 -q 7 -4 1 -2 1 -P -I 1 -N -o dvd_30secs.m2v
> 
> Which I understand denoises leaving the interlacing in place, then encodes the
> interlaced source. Played on my DVD player and 50hz TV, it's horrible. The
> content is a yoga style video, which has slow (to non existant :o)) action
> and a pure white studio background. The background flickers terribly, and the
> edges of the person and equipment are ghosted and flickery.
Maybe you card has mixed up the interlacing. The command lookes correct. 

> I tried adding -F to yuvdenoise and -I 1 to mpegenc, understanding this would
> deinterlace and produce deinterlaced output, and should therefore look bad on
> my TV. Actually, it looks a bit better, but is still not really usable.
-F won't change anything interlacing dependet. And the -I 1 is default
you do not need it.

> Any clues? My suspicions fall on the yuvscaler, which isn't described in the
> HOWTO, but appears to be necessary. (The example in the HOWTO gives an error
> message for me without it.)
Check if you version of yuvscaler has the -O DVD option. Use that option
instead of the -O SIZE_xxx. 

Have you tried using the yuvscaler adding (if you use CVS yuvcorrect) -M
BOTT_FORWARD or TOP_FORWARD ?
These options affect the interlacing. They are desrcibed in deep in the
howto section: 3.4 Notes about "interlace field order - what can go
wrong and how to fix it" 


auf hoffentlich bald,

Berni the Chaos of Woodquarter

Email: [EMAIL PROTECTED] [EMAIL PROTECTED]
www: http://www.lysator.liu.se/~gz/bernhard


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