View Full Version : need a help. old VHS
himmania
30th June 2007, 19:41
Hi
so this is a old VHS which i capture in MPEG-2....9000kbps
Now i have to encode it to avi with avisynth of course...
thats my script:
FieldDeinterlace
FluxSmoothST(5,7)
UnDot
DeGrainMedian(limitY=5,limitUV=5)
FFT3DFilter(sigma=3, sharpen=0.3, interlaced=true)
http://prikachi.com/images/png/1730A.png
do you see the green and darkred lines...how can i remove them?
do i need some virtualdub filters....?
hellsings
30th June 2007, 19:50
Are you sure it's really "lines" ???
I'm not an expert so i can really tell you what is the problem, and if some of expert of this forum read this message, you can post a fragment of your source uncompress.
For me i see some chroma noise and maybe some blocky area, but wait and expert opinion :)
nullstuff
1st July 2007, 16:21
...I'm really NOT sure 'bout this, but them could be grid artifacts introduced by the FFT3D filter. excluding it from the chain removes them?
-- nullstuff
setarip_old
1st July 2007, 17:36
@himmania
Hi!
You haven't stated whether these artifacts appear when playing the tape, or if they've been introduced as a result of your capture.
If they appear when you play the tape, try playing on (and capturing from) a different player.
If you don't have a different player available, try cleaning the heads of your player...
himmania
1st July 2007, 19:56
umhh thats was on the tape...and captured with winDVR 3.
The tape is old....the cassette recorder is old... i cant capture it again because i just gave back the tape.....
so this screen is withoit any filters...just loaded the mpeg with Vdub...
http://prikachi.com/images/png/1770b.png
Perhaps Fizick's DeFreq plugin would be suitable for this source:
http://avisynth.org.ru/defreq/defreq.html
scharfis_brain
1st July 2007, 20:19
himmania, you should try to get that tape again to capture it again.
WinDVR3 has completely blurred the video capture.
Capturing to a low compressed AVI (such as HuffYUV or MJPEG) using VirtualVCR will preserve much more image information. So you'll be able to knock out the chroma errors while maintaining a crisp and stable image.
foxyshadis
1st July 2007, 21:34
I suspect it's the tape and the tapehead, really, especially if it came from an air broadcast or a second-generation tape, but I might be wrong. Some of the chroma issues may have come from capture, or might just be in the source.
The way you're slamming it with noise removal is only going to wreck what detail there is. I'd start with fft3d and add others only as necessary; some will become redundant. Adding interlaced=true is a bad idea for now non-interlaced material, and you really should add sigma2-4 with lower values to minimize loss of soft detail. And don't forget the default is luma-only, when what really needs work is the chroma; add another fft3d line with plane=3 and high sigma values.
You might get better results with a smarter deinterlacer like yadif instead. I can't tell.
himmania
1st July 2007, 22:42
axx thanks so much guys...you are so helpful...
so i tested VirtualVCR and there is the same result...the tape is in really good condition. I captured with HuffYUV.
here is the result:
http://prikachi.com/images/png/1787U.png
so its seems that - the cassette recorder is bad....i cleaned a few times...before....cant work better...i think...
and the problem is not so big....i just find out that after the first frames the picture is getting better
here is....
this is in -> 0:00:00:000
http://prikachi.com/images/png/1790J.png
this is in -> 0:00:00:200
http://prikachi.com/images/png/1788R.png
here is the script:
TomsMoComp(1,5,1)
sharpen(0.2)
FluxSmoothST(5,7)
UnDot
DeGrainMedian(limitY=5,limitUV=5)
FFT3DFilter(sigma=3, sharpen=0.3)
vdub is crashing when i load second fft3d with the plane=3 code....
vBulletin® v3.8.11, Copyright ©2000-2026, vBulletin Solutions Inc.