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Old 31 Dec 2002, 12:44 AM   #1
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Default Best Virtual dub sharpen filter for non-anime movies?

What do you think?
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Old 31 Dec 2002, 08:24 AM   #2
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IMHO, anything that sharpens the video source (and hence makes it more difficult to compress) should be avoided, more so if you are using a limited amount of bitrate (let's say 1000kbps or less). The consequences of using a Sharpen filter are higher likelihood of macroblocks, line noise and picture warming.

However, if you insist on using the Sharpen filter, you could give Donald Graft's Avisynth Plug-in MSharpen a try. It is specifically designed for anime, but is said to work well with normal movies as well.
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Old 1 Jan 2003, 12:17 AM   #3
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I didt know that... from what I have read it is recommended to do a subtle sharpen to the image, but you might be right I will investigate a little
thanks!
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Old 1 Jan 2003, 12:21 AM   #4
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You're welcome.
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Old 2 Jan 2003, 04:06 AM   #5
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enchanter a question what resolution you uses for divx- xvid (from VHS source)? I have posted a message in xvid section, I have got some information about the best capture size, but I doubt about the final image size

Thanks!
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Old 2 Jan 2003, 08:33 AM   #6
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It depends on what bitrate you are using. As a general rule of thumb, use no higher than 640x() for a bitrate of around 1000. The recommended resolution scales linearly with the bitrate.

In your case if VHS capture however, I recommend that you add some smoothing step as well to remove video noise (and make the video more compressible). Convolution3D will work very nicely for you and there are some presets (available in the plug-in's readme file) that you can use.
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Old 2 Jan 2003, 10:28 AM   #7
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I am using bitrates of 1400-1500, so I think I will use 640x480...

I use temporal cleaner for noise, but I will also try convolution3d thanks!!
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