Is there a way to preserve the animation when exporting GIF to webp?

[Rusinas]

Subject.

I optimize all the user uploaded images by exporting it to webp with lower quality, but sometimes they upload GIF's and animations are gone after the export, but webp supports animations, as well as libvips support export to webp with animations.

Unfortuanetely, I don't see anything related to this on ep := vips.NewWebpExportParams()

[n0vad3v]

You need to pass in NumPages like importParams.NumPages.Set(-1) on load, for example:

	importParams := vips.NewImportParams()
	importParams.NumPages.Set(-1)
	img, err := vips.LoadImageFromBuffer(buf, importParams)
	if err != nil {
		return nil, err
	}

Refer to #246