On Dienstag, 11. März 2003 19:42 Bernhard Praschinger wrote:
> > I convert old VHS-C-PAL movies to XSVCD. A blue PC-created
> > titel with a light background shows a blue gleam around the
> > letters. Also I see at the edges of clothing a gleam. This
> > gleam at sharp edges is on the original movie too, but you can
> > see no gleam around the title with the avi-file. After the
> > mpeg-conversion the gleam at the edges of the clothing gets
> > larger and a gleam arround the letters was added.
> >
> > I use a videobitrate of 5000kbps and tried a quantisation
> > between 6 and 9.
> >
> > Is use this command within a script:
> >
> > transcode -i $i -V -y mpeg2enc,toolame -F 5,"-q $4 -g 6 -G 18
> > -S 10000" -w "$2" -b "$3" -j 4,14,16,10 -Z 696x556 -J
> > dilyuvmmx,yuvdenoise -Y -10,-4 -o
> > "$mpgdir$basename"_"$2"_"$3"_"$4" -export_asr 2
> >
> > Should I use another filter or special parameters for
> > yuvdenoise?
> >
> > Is it correct to use dilyuvmmx,yuvdenoise or is there a better
> > way?
>
> What kind of programm is dilyuvmmx ? Maybe try encoding it
> without that and once without yuvdenoise. than you should see a
> difference.
Sorry, I think I am a little bit between 2 mailinglists. A user in
the transcode list told me, that it could be that I get better help
here.
From man transcode:
-J filter1[,filter2[,...]]
...
Filter "dilyuvmmx": yuv de-interlace filter plugin
:::
Filter "yuvdenoise": mjpegs YUV denoiser
Filter "yuvmedian": mjpegs median filter
> > /usr/share/doc/transcode/filter_yuvdenoise.txt says:
> > "... except that the filter doesn't do interlaced MC yet and
> > doesn't do a good job on interlaced frames that way"
>
> Maybe someone should do some tests again to verify the comment.
I add a little bit from Stefan Fendt:
* I use exportvideo to get rid of annoying borders and to generate a
YUV4MPEG-stream which is piped ...
* ... into yuvscaler first(!) --> 352x288
* and then into the filter. (Well, the other way would work, too,
except that the filter doesn't do interlaced MC yet and doesn't do
a good job on interlaced frames that way... I'll fix that!)
Sorry, but I have no idea, if there is a newer plugin than mine. How
can I check this?
It looks like, that my "gleam"-ghost-picture gets smaller, when I
use yuvmedian too. I will test this without any filter asap.
Al
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