[Mjpeg-users] mpeg2enc problem: horizontal artifacts in resulting mpeg

[AERTS B. <Ber...@al...>]

I have Mandriva Linux 2008.0 x86_64 PowerPack on a Dell Inspiron 1720
notebook with Cinelerra from the Penguin Liberation Front
cinelerra-2.1-1.svn1008.1plf2008.0.

I want to render an mpeg-2 movie from my JVC Everio GZ-MG505 harddisk
camcorder to a format for DVD. I follow exactly the manual of Cinelerra
CV version 2.1:

20.9 Making a DVD
20.9.1 Rendering to mpeg2
20.9.1.1 yuv4mpeg pipe through mpeg2enc
Copy in '~/cine_render.sh file' the following lines:
#/bin/bash
mpeg2enc -v 0 -K tmpgenc -r 16 -4 1 -2 1 -D 10 -E 10 -g 15 -G 15 -q 6 -b
8600 -f 8 -o $1

I added -M 3 to improve performance on my Core 2 Duo T7300 processor.

I played with -q (3 and 8) and -b (11000) parameters after reading the
manpage of mpeg2enc.

The problem: there are horizontal artifacts in the rendered mpeg in a
certain scene. I can describe it as a horizontal line with the image
below the line not corresponding to the image on top of the line. No
block but line artifacts that are very disturbing.

Did someone struggle with the same and found a solution?

Thanks.