When I use Real ESRGAN here, the output image size is 2048*2048, but the original image is 750*442, is there any way to keep the output image aspect ratio of the original image？

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[sarthakchauhan]

resize/crop before or after Real-ESRGAN, or set the scale so it upscales proportionally. ESRGAN keeps aspect ratio; the square comes from padding or post-processing