Skipping frames for Animated WebP

It would be good to have an option to skip frames for animated webP.
If I have a thumbnail trying to render an animated wepb image with 120 frames it could be good to render only 30 frames, to preserve speed and memory.
Maybe not the first 30 frames but skipping frames in a loop: the animation will not be very smooth obviously.

A simple, not nice looking solution to skip half of the frames:
SDImageWebPCoder.m
line 264
Adding a skipper in the loop and duplicating the duration

    int skipper = 0;
    do {
        skipper++;
        if ((skipper %2) == 0) {
            continue;
        }
            
        @autoreleasepool {
            CGImageRef imageRef = [self sd_drawnWebpImageWithCanvas:canvas iterator:iter colorSpace:colorSpace scaledSize:scaledSize];
            if (!imageRef) {
                continue;
            }

#if SD_UIKIT || SD_WATCH
            UIImage *image = [[UIImage alloc] initWithCGImage:imageRef scale:scale orientation:UIImageOrientationUp];
#else
            UIImage *image = [[UIImage alloc] initWithCGImage:imageRef scale:scale orientation:kCGImagePropertyOrientationUp];
#endif
            CGImageRelease(imageRef);
            
            NSTimeInterval duration = [self sd_frameDurationWithIterator:iter];
            SDImageFrame *frame = [SDImageFrame frameWithImage:image duration:(duration*2)];
            [frames addObject:frame];
        }
        
    } while (WebPDemuxNextFrame(&iter));

Inizia in SDImageWebPCoder.m, intorno alla riga 264, dove vengono decodificati i frame WebP animati e raccolte le durate. Determina come dovrebbe essere esposta e mantenuta sulle piattaforme Apple supportate un’opzione opt-in per saltare i frame, quindi verifica il numero di frame risultante e la temporizzazione dell’animazione con un fixture WebP animato.