xiaoqu
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Posts posted by xiaoqu
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When I use this software to convert images to AVIF, will the software default my images to sRGB?
I have a full color raw image in TIFF format and I don't know how to compress it properly. Because the RGB in this image is linear.
For example, should it be gamma corrected first and then converted to AVIF by this software? -
I have an uncompressed tiff format RGB image. The RGB values in an image are linear.
Will there be distortion and other problems when the image is input to paint.net for JPEG compression and AVIF compression?
For example, is the RGB value of my output image still linear?Because I learned that the general input to JPEG encoders is sRGB color space. And AVIF, I don't know much about it.
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1 hour ago, null54 said:
I am unsure what you are referring to by stipulations.
The plugin uses the full av1 range of [0, 63], but the exact av1 quantizer value is undefined for any quality value between 0 and 100.
I'm sorry. I mean, all the AVIF encoders I have come into contact with before this were controlled by two quantizer values (a minimum and maximum), both of which ranged from 0 to 63. But the AVIF encoder on paint.net is only controlled by a quality factor of 0 to 100. So I was curious about the relationship between the two.
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34 minutes ago, null54 said:
A quality value of 100 corresponds with an av1 quantizer value of 0, and a quality value of 0 corresponds with an av1 quantizer value of 63.
The other quality values are mapped to the av1 range using a simple algorithm: https://github.com/0xC0000054/pdn-avif/blob/2b17f7b9ff45f5ae98959f98904166cfa62c288d/src/AvifNative/AV1Encoder.cpp#L122
Thank you for YOUR REPLY!! Also, does the avif on paint.net have any stipulations about the maximum and minimum quantization range?
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Can you tell me the correspondence between the quality factors 0 to 100 in avif and the quantizers [0,0] to [63,63] in av1?
AVIF FileType (04-30-2024)
in FileType Plugins
Posted
When compressing AVIF images using Paint.net, does the encoder process the Cb and Cr components separately or are they compressed identically?
Thanks for your reply!