Handle GIFs correct in gr.Image preprocessing

[abidlabs]

We can finally handle GIFs in gr.Image closing one of our oldest issues! Fixes: #1965, Fixes: #5174

Also removes up some old methods that are not used anymore

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Handle GIFs correct in gr.Image preprocessing

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[aliabd]

Hmm i'm still seeing a very weird issue..

Screen.Recording.2024-06-20.at.1.30.42.PM.mov

vs main

Screen.Recording.2024-06-20.at.1.33.14.PM.mov

with just

import gradio as gr
gr.Interface(lambda x:x, "image", "image").launch()

Maybe i'm not supposed to use defaults for gifs?

[abidlabs]

Ok so basically by default, gr.Image() converts to a numpy array which is not valid for GIFs. For GIFS, you need to set type to either filepath or PIL. Let me add that to the docstrings

[aliabd]

@abidlabs got it, but it only works for filepath. with pil it's the same issue as main.

[abidlabs]

Yeah hmm let me see

[abidlabs]

Oh okay so what's happening is that when a PIL image is passed into a gr.Image() output component, the format parameter coerces it into the specified format, which is "webp" by default. So you'd need to do:

import gradio as gr

demo = gr.Interface(lambda x:x, gr.Image(type="pil"), gr.Image(format="gif"))
    
demo.launch()

or you can keep it as a filepath, like this:

import gradio as gr

demo = gr.Interface(lambda x:x, gr.Image(type="filepath"), "image")
    
demo.launch()

Slightly confusing, but I think its best we can do without a breakage

[aliabd]

Ok, i'm fine with it as is. Consider changing the docs a bit. You could even add a section on GIFs :)

Thanks!

[abidlabs]

Yeah I'll do that!