Video Result

You know the loop: you're iterating on an LTX or Wan clip, and every test render dumps another MP4 into ComfyUI/output, where it piles up next to the one keeper you actually wanted. Video Result is Save Video plus one boolean - a save toggle that defaults to off. Flip it off and the video renders to the preview panel and nothing lands on disk. Flip it on when you've got the take you want, and it writes to output like the core node always did.

That sounds trivial. It's not. If you generate video in ComfyUI more than once a week, "preview without cluttering my output folder" is a genuine quality-of-life win, and it's the entire reason this node exists.

How it works

The node is literally a subclass of ComfyUI's own SaveVideo node (from comfy_extras.nodes_video), so underneath it's the same codec handling you already know - it just injects the save switch into the input list. When save is false, it writes to ComfyUI's temp directory with a random suffix and returns a video-preview UI element, so the clip shows up in your browser but is treated as throwaway. When save is true, it uses the normal output path with the standard filename counter. Metadata (workflow and prompt) is embedded into the saved file unless you started ComfyUI with --disable-metadata.

It's also an output node, which in ComfyUI terms means it's a terminal - it always runs and it marks the end of the graph. Because it's an output node it also passes the VIDEO through as an output, so you could chain a real save after it if you wanted.

The inputs that matter

Most of them you can ignore, but three are worth knowing:

• save (boolean, default false): preview without saving, or write the file. The default is the whole point - the stock Save Video can only ever save.
• filename_prefix (default video/ComfyUI): the save path and filename. Per the author's own tooltip it supports formatting like %date:yyyy-MM-dd% or pulling values from other nodes, e.g. %Empty Latent Image.width% - handy when you want the resolution or date in the filename.
• format (default auto) and codec: same choices as core Save Video - pick the container (e.g. mp4) and the codec populates accordingly. If you already know your codec setup from Save Video, it carries over unchanged.

One input: video (VIDEO), straight from your VHS/Video Combine-style video node. One output: the same video, passed through.

Installing it

Part of the AstroCorp pack, so install once and you get this plus the upscale and clipboard nodes:

# ComfyUI Manager → search "ComfyUI AstroCorp Nodes"
# or:
cd ComfyUI/custom_nodes
git clone https://github.com/AstroCorp/ComfyUI-AstroCorp-Nodes
# restart ComfyUI

No model files, no heavy dependencies - the pack's only declared requirement is TensorRT, and it's optional and only touched by the upscale nodes. Video Result itself has zero extra install burden.

Common issues

• I set it to preview and now my video is gone. It's not lost - it's in the temp directory with a random suffix, and temp gets cleaned up. That's the trade the node is making explicit: if you want it kept, flip save on.
• "Node not found" in a downloaded workflow. The pack isn't installed. It's a small pack, easy to miss when a workflow lists it as a dependency.
• Codec/format confusion. It's the same dropdowns as Save Video, so any format trouble is inherited, not new. If auto picks something your player hates, set format explicitly.

Is this node going to change your life? No. It's a two-second convenience that stops your output folder from becoming a graveyard of near-miss clips. For anyone doing video iteration, that's worth the one-time install.