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| play32 |
| Posted: Jul 15 2010, 02:06 PM |
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Currently, the animated GIFs exported from VirtualDub look quite poor.
I know that GIF images can only have 256 colours, but bigger colour spots are completely "flat" when exported from VirtualDub. In Photoshop, you can choose some filters like diffusion or noise to "fake" some more colours and make them look like gradients.
It would be nice if VirtualDub had a better colour-reducing algorithm that adds some noise to the GIFs.
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| rjisinspired |
| Posted: Jul 16 2010, 12:09 AM |
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It's called dither. I played with that in still photos but never dealt with it in Vdub
There is an example of gif that can go beyond 8 bit so it is possible to go higher than 8 bit, 256 colors;
http://phil.ipal.org/tc.html
I imported the 24 bit gif into Vdub, exported it and it came as visual blocks that are banded. I then did an image sequence export which created 172 images than imported those back into Vdub and it came out the same.
MPH-HC won't play gifs I guess. Says that the gif or video length is 24 hours, lol.
Under paint shop pro the frames look correct. |
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| phaeron |
| Posted: Jul 16 2010, 04:32 AM |
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Virtualdub Developer
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VirtualDub doesn't currently write 256 color GIFs; it writes out the psuedo-color where up to 256 colors are used per frame, as rjisinspired notes.
Dithering in animation is actually fairly tricky to do well. I'll add it to the feature list, but I should warn you that the list is pretty long, so I don't know when I'd get around to it.
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| DarrellS |
| Posted: Dec 13 2010, 07:13 PM |
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| QUOTE (rjisinspired @ Jul 15 2010, 05:09 PM) | It's called dither. I played with that in still photos but never dealt with it in Vdub
There is an example of gif that can go beyond 8 bit so it is possible to go higher than 8 bit, 256 colors;
http://phil.ipal.org/tc.html
I imported the 24 bit gif into Vdub, exported it and it came as visual blocks that are banded. I then did an image sequence export which created 172 images than imported those back into Vdub and it came out the same.
MPH-HC won't play gifs I guess. Says that the gif or video length is 24 hours, lol.
Under paint shop pro the frames look correct. |
I use Ifanview as my default GIF player. Works great.
I usually use Gif Moviegear 4 to create SWF or AVI out of 32 bit layered PSD files since they look a lot better than GIFs but I found that the PNG mod version of Virtualdub creates some pretty good looking animated PNGs. |
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| MaxS |
| Posted: Dec 13 2010, 08:36 PM |
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Joined: 13-October 08
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| QUOTE (DarrellS @ Dec 13 2010, 07:13 PM) | | but I found that the PNG mod version of Virtualdub creates some pretty good looking animated PNGs. |
I also have apng2gif converter, which creates nice single-palette GIF from APNG.
Useful for video->apng->gif |
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