#Why using WEBP for Sora is a bad idea (screen below)

1 messages · Page 1 of 1 (latest)

sudden plinthBOT
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Reported by @jovial gust

Bug Report: Why using WEBP for Sora is a bad idea (screen below)
`Steps to Reproduce`
  1. Create a prompt
  2. Generate an image
`Expected Result`

Crisp images

`Actual Result`

Blurry details

`Environment`

Windows 10, Chrome 137

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Additional Information

Please provide relevant details to help resolve the issue, such as:

  • ChatGPT Shared Link (if applicable).
  • Screenshots or videos demonstrating the problem.

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jovial gust
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(An image saved in different formats, zoom x4 - a lossless WEBP animation)

WEBP_JPG_JXL_AVIF_comparison_lossless_webp_animation_4x_zoom.webp
jovial gust
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As you can see, WEBP is loosing details. Textures become blurry.
Using "Sharp_YUV" instead of RGB helps a little bit, but all other formats than WEBP are better for lossy compression.

JXL and AVIF are superior. AVIF is supported by all browsers.

jagged leaf
jovial gust
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Here's the source image I used. It's an image generated with Sora, but scaled down with a slight Unsharp Mask, to hide the WEBP flaws.

("A very close up of a red cotton ribbon crossing a yellow ribbon against a sunny sky with small clouds")

@jagged leaf

You can compress it to a regular lossy WEBP, compare it with "sharp_yuv" (which is better than regular WEBP).

But with this test I understood why people complain about the blurriness of this format,
and why it is not used in phone cameras.

Lossless.png
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(↑ PNG image)

jagged leaf
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You should read that part, what you demonstrated iv been speculating I just didn’t know how to do what you just did.

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Well, also to consider is the aspect ratio to what extent would that have an effect on?

jovial gust
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@jagged leaf I use ScreenToGif to record or edit a recording.
The animation above with the two ribbons consists of only 6 frames.

ScreenToGIF.gif
jagged leaf
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Smart.

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But don’t you lose quality by converting it into GIF?

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Isn’t there a drawback?

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Cause I had really sharp videos come out at 480 P that seemed a lot sharper than a 1080 P

jovial gust
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This is why the animation with the two ribbons is a lossless WEBP animation.
ScreenToGIF allows you to save an animation as GIF, WEBP, APNG, and other formats I think.

jagged leaf
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I think these were I want to say 1080

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But look at the last video is 1080 P but do you see like that grain?

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Or is that my eyes are playing tricks on me