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This tutorial explains how to upscale video on Windows with Waifu2x-Extension-GUI. The walkthrough covers downloading the release from GitHub, extracting the archive and launching the batch file. First launch includes a language choice and compatibility test. The speaker also enables hardware accelerated decoding.
For processing, the speaker selects the Real ESRGAN NCNN Vulkan engine, detects the GPU ID and chooses an output folder. The demonstration switches to the 3D real life setting and uses Universal-FastV2. After importing a 720p clip, the speaker sets the output resolution to 3840 by 2160, applies it and starts the render with the remaining settings at their defaults.
On the speaker's reported RX 570 XT system, Universal-FastV2 processes a 15-second clip in about two minutes. The speaker prefers its balance of quality and speed, describes Omni-Turbo V1.5 as faster with slightly lower quality, and reports about 14 minutes for RealESRGAN-x4plus on a 15-second clip.
The local AI examples include talking-head footage, a disassembled hard drive, Hollow Knight: Silksong gameplay and a Windows tutorial. The speaker finds the gameplay improvement modest and the desktop text more noticeably cleaner. These are observations from the demonstrated tests; processing time depends on hardware, duration and model. The speaker cautions that upscaling cannot turn every poor source into native 4K footage.
