[Bug]: Will not write out webp files

[brian000]

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits

What happened?

UI will no longer write WEBP images to disk. PNGs and JPGs write fine.

Steps to reproduce the problem

In config.json, set "samples_format": "webp",
Generate an image. It will generate, but will not be written to disk.

  File "C:\sd\modules\call_queue.py", line 45, in f
    res = list(func(*args, **kwargs))
  File "C:\sd\modules\call_queue.py", line 28, in f
    res = func(*args, **kwargs)
  File "C:\sd\modules\txt2img.py", line 51, in txt2img
    processed = process_images(p)
  File "C:\sd\modules\processing.py", line 464, in process_images
    res = process_images_inner(p)
  File "C:\sd\modules\processing.py", line 607, in process_images_inner
    images.save_image(image, p.outpath_samples, "", seeds[i], prompts[i], opts.samples_format, info=infotext(n, i), p=p)
  File "C:\sd\modules\images.py", line 536, in save_image
    _atomically_save_image(image, fullfn_without_extension, extension)
  File "C:\sd\modules\images.py", line 508, in _atomically_save_image
    image_format = Image.registered_extensions()[extension]
KeyError: '.webp'

What should have happened?

WEBP image should have been written to outputs/txt2images-images. When setting "samples_format": "png", the PNG is correctly written to disk at the end of generation.

Commit where the problem happens

685f963

What platforms do you use to access UI ?

Windows, MacOS

What browsers do you use to access the UI ?

Mozilla Firefox

Command Line Arguments

`--listen --xformers`

Additional information, context and logs

No response

[Cyberes]

Not a bug, the WebUI doesn't have the ability to save in webp format. We welcome a PR though!

Pinging @ClashSAN for closure.

[brian000]

Not a bug, the WebUI doesn't have the ability to save in webp format. We welcome a PR though!

It’s been writing webp for me for at least two weeks.

[WASasquatch]

Did you update something, it says webp isn't a valid extension in PIL.Image.registered_extensions(). So your PIL doesn't have the plugin for webp anymore, it looks like.

Probably because you have .webp instead of webp. It should be used as .save(destination, format="webp")

[ClashSAN]

is this issue related? #5603

[brian000]

Probably because you have .webp instead of webp. It should be used as .save(destination, format="webp")

Nope. The config file just has webp without the dot. Just like if I were making jpg or png. I’ll check on the PIL version though.

Edit: Pillow==9.2.0

[maxixa]

now It is jpg also gives same error today s update

[aliencaocao]

Definitely same issue as #5603
@ClashSAN I suggest we close this and keep the older issue open since it is duplicate, and move discussions to there