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| Unofficial VirtualDub Support Forums > Advanced Video Processing > Temporal Smoother After Other Filters |
| Posted by: Fredd Jan 2 2003, 03:45 PM |
| Hi everyone, I often use temporal smoothers (dynamic noise reduction for example) and I found that the documentation of YATS (another one) advise to set it after resizing. Well, it confuses me. Let's imagine I filter a video with the Grayscale and Dynamic NR filters. What does the DNR: does it work on the source image (with colours) or a grayed image? When it searches in the next frame, does it ask the filters before to do some job? |
| Posted by: valja Jan 2 2003, 04:59 PM |
| AFAIK, all VDub filters deal with picture, delivered by all previous filters. So, if you put DNR before grayscale, it deals with colored picture, if after, with grayed image. Therefore filters order is very important. I myself use temporal smoother always before resize. That gives more clear and sharp picture. When shrinking, you will lost less details during temporal cleaning, when enlarging, you will enlarge cleaner picture (and not sharpen noise). If question is in picture quality, a few hours more/less doesn't matter, at least for me. |
| Posted by: Morsa Jan 3 2003, 09:48 AM |
| For what I've seen, Dynamic Noise Reduction works better for me if I put it after upsizing the image, don't know why but it looks much better. |