Satish: Used your adapter for the "Smart Smoother" filter

riredale wrote on 6/14/2003, 6:40 PM
Just wanted to let you know that I am just finishing up a DVD that contains 1 hour and 55 minutes of video, plus a 2-channel AC-3 soundtrack. To get this much material I needed to encode VBR MPEG2 at about 5Mb/sec, which is getting into dangerous territory.

The video is of a spectacular choir performance, shot indoors, and the video thus has a moderate amount of video noise. I've learned in the past that video noise just kills MPEG2 encoders (the encoder is forced to work so hard that the resulting video is full of artifacts). So this time, I ran all my finished avi masters through the "Smart Smoother" filter via your plugin.

Using the default settings, video noise was moderately reduced without affecting detail much. But to my MPEG2 encoder (CinemaCraft) the filter made a huge difference. Q went from 12 to 9, which is a noticeable visual improvement. The DVD looks very clean, and makes me muse about stuffing 3 hours on a DVD-5 for the next project...

Anyway, just wanted to let you know that your programming efforts were very much appreciated here.

Comments

StormMarc wrote on 6/14/2003, 9:13 PM
How difficult is it to use smart smoother in Vegas for us (non-programming types). Is there a step by step anywhere?

Thanks,

Marc
BillyBoy wrote on 6/14/2003, 9:35 PM
It isn't hard at all. You do need to install VirtualDub first and then if you want more VitrualDub filters in that application's plug-in folder. Do a web search (on a rainy afternoon) they are all over the place on the web) and there are scores of them, some better than others.

Personally I don't care much for frame serving itself, but Satish's as usual came up with a neat little app. Case in point if you use any VirtualDub filter by frame serving from Vegas it actually takes LONGER than if you would pre process before bringing your file into Vegas. In other words all the VirtualDub filters run FASTER, (much faster in my experince) if done directly from VirtualDub (save as AVI) then continue doing your thing in Vegas.

If you h aven't tried VirtualDub, do yourself a favor and dowload it. It too is a nifty little program and its free. Its main strength is in its filtering which are mostly of the clean up and noise (video) removal type. It can do many other things too, but heck yoiu already got Vegas which is the BEST editor.
BillyBoy wrote on 6/14/2003, 9:43 PM
I got to try to stop doing 3 or 4 things at once....

Smart Smoother is a add-on filter for VirtualDub

http://shelob.mordor.net/dgraft/smooth.html

Above gives an example of what it can do... and can't.
Luxo wrote on 6/14/2003, 11:23 PM
Slightly OT, but for anyone doing noise removal in Premiere, check out Vixen. I would love to see something like this ported to Vegas or added by SOFO for Vegas 5. I re-installed Premiere just to get at this plug-in, and frameserved back to Vegas.

The strongest feature is temporal noise checking, where it compares consecutive frames for for signs of noise, rather than simply blurring each frame. It retains all the sharpness of the original image, is fast, and is infinitely tweakable.
BillyBoy wrote on 6/14/2003, 11:53 PM
Looks like something a knob twister like me would like. :-)
StormMarc wrote on 6/15/2003, 12:28 AM
Thanks Billy Boy. I'm trying it out right now on some bad wedding footage.

Marc
satish wrote on 6/15/2003, 1:38 AM
Great. :) Thanks for letting me know.
craftech wrote on 6/15/2003, 8:46 AM
Doesn't "Quick Blur" do the same thing in Vegas?
John
JohnnyRoy wrote on 6/15/2003, 9:50 AM
> If you h aven't tried VirtualDub, do yourself a favor and dowload it.

Gotta second BillBoy’s recommendation here. VirtualDub has done some great stuff with noisy lowlight videos for me. It’s like a Swiss army knife for video.

> check out Vixen. I would love to see something like this ported to Vegas ...The strongest feature is temporal noise checking

VirtualDub has a built-in temporal smoother that performs an adaptive smooth along the time axis, and Jim Casaburi has written a Temporal Cleaner plug-in that reduces changes across frames without blending motion. I’ve used both with good success. These might do what Vixen does.

~jr
riredale wrote on 6/15/2003, 3:27 PM
craftech: The whole trick is to somehow take out "noise" without removing "detail." The question is, what is noise and what is detail? The blurring filters just hack away and all the high-frequency stuff, which includes both. From what I can tell, SmartSmoother is a bit more refined in that it takes away the high-frequency stuff in regions that otherwise lack detail, but doesn't have much effect on the details of the image. It does this by saying, "Okay, any pixel-to-pixel variations below a certain amount is video noise, and I will smooth all that stuff out. Any pixel-to-pixel variations above that amount isn't noise, it's image details, and I leave that stuff alone." All I can say is that it seems to work without screwing up the "sharpness" much.

The default settings seem to work best for me. I tried boosting the settings to see how it changed things. The result: video that had broad areas of one color (like in a cartoon), yet little improvement in the Q (quantization) factor in the MPEG2 encoder results.

Of course, the best bet is to use a higher-quality camera at the source to minimize the noise in the first place, but for now I'm stuck with my little TRV8, a fine little camera in most respects.
filmy wrote on 6/15/2003, 4:20 PM
>>>>VirtualDub has a built-in temporal smoother that performs an adaptive smooth along the time axis, and Jim Casaburi has written a Temporal Cleaner plug-in that reduces changes across frames without blending motion. I’ve used both with good success. These might do what Vixen does.<<<<


Vixen does a hell of a lot. One of its main thrusts is color correction via scopes and the like. It offered these features as a plug-in for Premiere and other NLE's that did not have this kid of Color Correction. Now that more and more NLE's are including more robust CC out of the box Vixen's overall use may be limited as it is now.