how to get rid of noise on video

itp wrote on 1/4/2004, 8:39 PM

Is it possible to reduse noise on video with Vegas? I'm trying to put my old VHS to DVD and find them not up to scratch for DVD quality (it was recorded by 8 mm camera and then copied (with a bit of editing) to domestic VHS recorder. Is it possible to rectify it a bit?

Comments

johnmeyer wrote on 1/4/2004, 8:58 PM

See the following:

http://mediasoftware.sonypictures.com/forums//ShowMessage.asp?ForumID=4&MessageID=234444

http://mediasoftware.sonypictures.com/forums//ShowMessage.asp?ForumID=4&MessageID=231873

http://mediasoftware.sonypictures.com/forums//ShowMessage.asp?ForumID=4&MessageID=222339

http://mediasoftware.sonypictures.com/forums//ShowMessage.asp?ForumID=4&MessageID=218753

craftech wrote on 1/5/2004, 5:35 AM

If you have a Proc Amp:
http://www.signvideo.com/single_dual_proc-amp_video-processor.htm

Then you will get excellent results by using:
1. Hi8 camera S-Video out to ProcAmp S-Video in.
2. Proc Amp settings adjusted to set black levels, saturation, gain, and hue until noise is gone and colors look good within legal limits.
3. Proc Amp S-Video out to DV camera or DV deck or DV device S-Video in. Audio cables from Hi8 camera to DV device.
4. DV device firewire out to computer firewire in
5. Capture

In other words, fixing it before you capture without having to use software to do it. I do a lot of VHS production. I couldn't live without my Proc Amp.

John

farss wrote on 1/5/2004, 5:47 AM

craftech,
if you think a proc amp helps try time base correction, then add 3D digital noise reduction. The first cannot be done after A/D conversion, the second in theory could but I've yet to find a way and I'd bet it would be very slow to render.

Best thing for recovering Hi8 tapes, a D8 camera or VCR or better still ADVC-300, has all of the above and proc amp. Best of all you can monitor in analogue domain during capture. Now if only I can get hold of a vectorscope.

craftech wrote on 1/5/2004, 10:19 AM

Actually the reason I forgot to mention TBC is that I have it built into both my VTR and my DV deck. Many Proc Amps have it built in as well.

John

Couldbe wrote on 1/5/2004, 1:21 PM

farss,

I was just about to purchase a pro amp so this thread is very timely.
Regarding transferring S-VHS/VHS tapes to DVD are you saying that the ADVC-300 would be a better alternative then the proc amp/tbc mentioned above as far as to setting black levels, and removing noise prior to outputting do DVD.

mark

farss wrote on 1/5/2004, 2:02 PM

The ADVC-300 includes just about everything that you could need.
I didn't specificaly mention it as I've mentioed it a few times before and I don't want to start sounding like a Canopus salesman. I can confirm it work very well with Vegas, I find I can tweak its proc amp settings during capture and monitor in both VidCap preview and via an external monitor connected to the ADVC-300 outputs.

If you only ever need to work with VHS / SVHS/Hi8 it'll be all you ever need.

craftech wrote on 1/5/2004, 3:33 PM

farss,
I looked at the specs and the description of the ADVC-300 and while it seems like a nice device it's not really a Proc Amp. It's an Analog to DV converter with advanced image correction features but it doesn't adjust blacks to different IRE levels and set analog gain along with analog adjustment of Hue and Chroma. Granted, I haven't used one and I must admit it looks interesting. Do you feel it was worth $550? My Proc Amp was $400. I have two devices for transcoding....my DV deck (Sony WV-DR9) and my Sony VX2000 camera.

John

Spot|DSE wrote on 1/5/2004, 9:49 PM

itp,
you might want to try the median filter, it's good for some noise reduction and even has a couple presets to get you started. Unfortunately, you need to prerender short sections to really see what's happening w/it. Overall, hardware is the best way to do this, but a limited amount of cleanup is possible in Vegas. A lot of other work can be done in Vegas, such as color crrection, sharpening, etc.

farss wrote on 1/5/2004, 11:52 PM

craftech,
now this is the odd thing about this box. The damn specs don't mention half of what it'll do, so I got a BIG surprise when I installed the code and got the thing running.

It does much more than they tell you it will.
Under the Basic tab you get to adjust::
Brughtness, Contrast, Saturation, Hue, Sharpness, Volume, High, Low, AGC.
Under Filter:
Y/C separation mode, 3D Noise reduction, 2D Noise reduction, 3D Y/C separation.
Under Video 1:
Black Expansion, White Peak Adjust, White Step.
Under Video 2
Edge Adjustment (Horizontal and Vertcal),Video AGC.

And Yes , you can set 7.5 IRE on or off by a DIP switch.

Many of these are only applicable to NTSC by the way, it'll also handle SECAM in but not out. The 3D noise reduction uses a 3 frame buffer it determine what is noise. The 2D noise reduction is the usualy low pass filter. To their credit Canopus make all this quite clear in the manual.

The only thing it will not do is on the fly color correction, not that I'd really want to try doing that anyway. Things like edge enhancement made me a bit nervous but it's not the 10 pixel wide black line kind of deal like you get on consummer gear.

It'll feed a component monitor also but only component out (switchable YUV/RGB).

My only gripe, they still haven't sorted out the component out cable.
I guess my other complaint is a lot of those things are just sliders, no real value is given, so you don't know how much you've wound up the brightness for example. We've got a Hamlet that doesn't get much use so maybe I can 'borrow' that for a while.

And oh yes, you can update the fireware via the f/wire conection.

One thing. It will not bypass Macrovision as far as I know. It has a warning light to tell you. Manufacturers of TBCs have been hounded by the Macrovsion people, I guess Canopus were playing it safe.