Comments (5)
Yes, the way that the GIF format is specified it is max 8-bit (256 color) indexed color. The palette is supplied in the GIF, so you must also supply it to omggif.
There are many different color reduction / quantization algorithms that you can use for choosing a palette. This is really independent of omggif / gif encoding. I don't think there should be any problem using the above NeuQuant code w/ omggif, for example. Additionally you may also want to do dither, which is normally another independent pass.
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When I have some more time I planned on working on dithering / color quantization (for example spatial color quantization and other algorithms). This would be a separate project from omggif, but I realize it would be helpful here too...
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I had some fun figuring out some monochome dithering in JS (live, code) but the color stuff seems beyond me for now.
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If you're going to monochrome 256 colors, there is no reason to dither.
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For anybody interested, here is OMGGIF working with NeuQuant.js in a worker: https://github.com/meemoo/iframework/blob/master/libs/omggif/omggif-worker.js
Live test with webcam: http://meemoo.org/iframework/#example/cam2gif
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Related Issues (20)
- Implement streaming HOT 12
- Please add license file HOT 2
- Disposal method 2 not supported HOT 2
- Combine frames with transparency HOT 3
- Quantization and efficient frame encoding
- Are you accepting PRs? HOT 4
- Infinite loop on truncated GIF HOT 3
- Unhelpful exception on exceeding buffer bounds HOT 5
- Exceptions do not include a stack trace
- Enumerate public API? HOT 3
- Blending operations in GIFs HOT 2
- Upload to bower
- Loop count when exporting GIF HOT 9
- Get global palette from GIF HOT 6
- Invalid Block Size HOT 5
- Supporting corrupted GIFs to some degree HOT 2
- Attempt to use undefined value HOT 1
- MIT license? HOT 3
- Corrupted GIF at the output HOT 4
- frame ghosting and partial frames HOT 1
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