Noisy/Grainy image

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Noisy/Grainy image

Postby Amo-Chan » Thu May 31, 2007 6:10 pm

After rendering a video with Vegas and then compressing with Vdub, my video seemed kinda noisy and grainy...not too sure how to fix that. I'm still having avisynth issues so I'm having to use the filters in vdub. Could this problem be because I've sharpened the image too much?
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Postby NeoQuixotic » Thu May 31, 2007 6:51 pm

1) Please post a screen shot!
2) What are your project and rendering settings in Vegas?
3) What codec did you render and compress with?
4) And please post the script(s) you are using.

With that info, we might me able to help you ^_^!
Insert clever text/image here.
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Postby Amo-Chan » Thu May 31, 2007 7:03 pm

I don't know how to take a screen shot.
But, In vegas I used Huffyuv, Used NTSC DV widescreen template, frame rate 29.970, progressive scan, 720x480, not including audio.
And in Vdub I compress with xvid (doing two passes)

I use the deinterlace filter...and sharpened to 29.
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Postby Zero1 » Fri Jun 01, 2007 1:07 am

If you used the DVI profile, it's likely that it has now made your video interlaced (looks like a bunch of lines). If you then go on to compress this with XviD, it will likely turn out blocky because it is so hard to compress.

You need to use a different profile. Unfortunately I don't use vegas so I can't help you with that.
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Postby Amo-Chan » Fri Jun 01, 2007 1:10 am

No. It's not a bunch of lines. I've had that problem once before. It's more like there's extra movement on top of the picture.
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Postby CrackTheSky » Fri Jun 01, 2007 2:40 am

Amo-Chan wrote:No. It's not a bunch of lines. I've had that problem once before. It's more like there's extra movement on top of the picture.

To take a screenshot, open the video in VDub and go to Video>Capture Output Screen To Clipboard, open MS Paint (or some image editing program), and paste.

From your description, it sounds like you just have a lot of noise in the video, and VDub's internal filters probably aren't doing a very good job of removing it. What's wrong with AviSynth...why doesn't it work? In order to get your video looking good, AviSynth is the most efficient way to do it.

I don't have VDub on this computer, so I can't check to see if it has any, but have you tried using VDub's denoising filter(s)?

If you can get AviSynth working, read this.
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Postby Amo-Chan » Fri Jun 01, 2007 3:08 am

Image



Here's a screen shot.[/img]
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Postby JaddziaDax » Fri Jun 01, 2007 6:43 am

that looks like its due to the sharpen filter
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Postby CrackTheSky » Fri Jun 01, 2007 12:09 pm

CrackTheSky wrote:What's wrong with AviSynth...why doesn't it work?
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Postby Zero1 » Fri Jun 01, 2007 12:41 pm

Is it possible to upload the file somewhere like megaupload.com ?

Usually seeing it in action or just checking the file can reveal more than a screenshot.
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Postby Amo-Chan » Fri Jun 01, 2007 1:06 pm

Yeah..I can upload it to megaupload, no problem. As for Avisynth...I'm not sure why it won't work. It just won't apply of my scripts to my video. It's weird. I think the conclusion we all came to (in a different thread) was that it was most likely just my computer. I'll get back with the upload link.
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Postby Amo-Chan » Fri Jun 01, 2007 1:27 pm

http://www.megaupload.com/?d=IMHJ97HK


Ok, here's the video. This is what it looked like after compression with xvid with vdub.
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Postby BlaCk_PeArL_27 » Fri Jun 01, 2007 3:52 pm

Amo-Chan wrote:http://www.megaupload.com/?d=IMHJ97HK


Ok, here's the video. This is what it looked like after compression with xvid with vdub.

guess you have to enter it in the catalog "__" locally if this is done editing :?
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Postby Amo-Chan » Fri Jun 01, 2007 3:54 pm

Oh, crap. I totally forgot about that...I'm not really done though, since I'm having all these issues. I'll enter it anyway though.
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Postby JaddziaDax » Fri Jun 01, 2007 4:00 pm

this isnt an announcement you dont have to enter it till its done :/
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