On Wed, 20 Apr 2005, Nicolas wrote:
> I see colour trails on my videos. My card is a DC10_new.
>
> Here's an example:
> http://www.oxstone.com/misc/200504/image_zoran_trails.jpg
...
> nice -20 lav2yuv record_01.avi | y4mshift -n -2 | yuvscaler -I
> USE_744x560+12+8 -O DVD -M BICUBIC | yuvdenoise -F | yuvmedianfilter -T
> 3 | mpeg2enc -f 8 -c -D 10 -E -10 -q 2 -K tmpgenc -o record_01.m2v
> Does those trails come from my tapes? It's an Hi8 Sony Camcorder. The
> tape is a good Sony tape, and it was totally new when I used it...
Did you use a Hi8 tape or a regular 8mm tape? As I recall (from
my analog days ;)) a Hi8 camcorder will record on either type of tape
but the higher quality (hi-band/Hi mode) only on Hi8 tapes.
I do not think though that the problem is related to the tape.
If you attach the camcorder to a TV and view the tape do you see
trails then? If not that would say the problem is not in the tape
or the camcorder.
The thing to try is remove all filters from the pipeline and see if
that makes a difference.
lav2yuv | yuvscaler | mpeg2enc
If that looks ok then add the filters one at a time until the problem
occurs.
Hmmm, 'yuvdenoise' doesn't have a -F option so it appears you're
not using the cvs version of mjpegtools. THere is a possibility
that you're encountering a bug that was fixed in the cvs version
(a release never seems to happen - it gets discussed and then
forgotten).
The only other thing I can, at the moment, think of to try is a
different capture method. If you had a analog->DV converter perhaps
that would behave differently - but I think that's more effort/expense
than you want to get into.
Cheers,
Steven Schultz
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