Saturday, March 15, 2025

upscaling a video (from HD to 4k, for example) using ESRGAN on Google Colab

 Tried out the first result in a web search for upscaling using google colab - 

https://colab.research.google.com/github/yuvraj108c/4k-video-upscaler-colab/blob/main/4k_Video_Upscaler_Colab_(Real_ESRGAN).ipynb

Copied to my google drive to make the changes persistent - the only changes needed were the paths to the input and output files. 

Without modifications, the upscaled video went to the google drive recycle bin instead - it looks like there is a missing 'mv' in the command = f"'{final_video_path}' '{save_directory_drive}'/'{final_video_name}'"

Anyway, input video with compression artifacts gets upscaled to output video with compression artifacts. If there's some clean video, will take a look. The upscaling inference goes at approx 2 seconds per frame on the T4 google colab GPU.

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