HappyHorse Video Edit

First, a public service announcement, because this model's name has a malware-shaped trap in its history. When HappyHorse first showed up in April 2026, people went hunting for its weights - and found convincing-looking HuggingFace repos that were outright scams, flagged by the community as cryptominer bait. The real HappyHorse is not open-weight, and it never was. It's an Alibaba-hosted video edit model served through the same API channel as Wan 2.7, and the only legitimate way in is through API nodes like this one. If you see "HappyHorse safetensors," that's your cue to walk away.

With that said, this is a genuinely interesting edit model. The node is a partner/video API node built into ComfyUI core: drop a video in, describe the edit, and get an edited clip back - billed per second through your Comfy account. No install, nothing on your GPU.

The model widget is a dynamic combo hiding the real controls: prompt takes editing instructions or style-transfer requests, resolution is 720P or 1080P, ratio offers the standard five aspect options (leave it alone and it approximates your input video's ratio), and reference_images lets you attach up to 5 style references - "make the background look like image3" type work. Feed a reference image and a text instruction together and you get the character-consistency-friendly style transfer lane, same trick as Wan 2.7 video edit but with more reference slots.

The node body itself is spare: video (validated to 3–60 seconds), seed as the standard re-run control, and watermark off by default.

Here's the output rule to internalize, straight from the description: output duration matches the input video, in the 3–15 second range, and inputs longer than 15 seconds are truncated before editing. So if you feed it a 40-second clip, you get an edited version of the first 15 seconds - not a summary of the whole thing. Plan your source clips to fit, or cut them before they hit this node.

Mechanically it's the Wan family under the hood - same /proxy/wan/... endpoint, same upload-and-poll pattern, same VIDEO output that plugs into Save/Preview or downstream nodes. In fact it sits right in the Wan node file, and Alibaba's own release notes treat it as a sibling of Wan 2.7. If you already use the Wan video edit node, the muscle memory transfers completely.

The honest take: HappyHorse's pitch is that it's better at preserving the subject while swapping the scene - the "keep the actor, change everything around them" edit - and it's worth trying against Wan 2.7's edit model to see whose results you prefer, because they're different tiers of the same hosted family. The practical rhythm is identical to every other paid node here: draft at 720p with short clips, confirm the edit reads, then spend on 1080p. The price badge updates with your resolution choice and bills per second of output.

It landed in core in April 2026 with the 1.0 model, and a 1.1 refresh followed in June. Just remember the weights don't exist, the API does, and anyone selling you the former is selling you a problem.