SeedVR 2.5 in ComfyUI: setup and Topaz Video comparison

This tutorial covers video upscaling with SeedVR 2.5 in ComfyUI, using a 360p parrot clip to examine feather detail and background softness. Setup involves importing a workflow JSON file and installing missing nodes through the manager. The workflow downloads models on its first run.

For local AI use, the presenter says 3B models can work with 8 GB or 12 GB of VRAM and recommends more than 24 GB for 7B models. These are his recommendations, rather than guarantees for every input. He favors 7B FP16 for quality, but reports hitting his machine's limit with videos longer than 10 seconds and switching to FP8. His local 4K attempt failed; the same clip worked on RunComfy with 48 GB of VRAM.

The settings discussion recommends 1080p as a balance between quality and speed. The presenter says larger batches improve temporal consistency but need more memory, while small batches can produce flicker. He also cautions that sharp model variants can look less natural.

His review credits SeedVR with preserving blurred backgrounds, colors and contrast, though he notes excessive sharpening around the parrot's eye. The Topaz Video comparison covers its preview controls, frame interpolation and export settings. He prefers Topaz's interface and the more natural results he can obtain with suitable settings, while describing SeedVR as a free option inside ComfyUI.