new.ip233.com｜seedance-2.0-fast 视频生成

"Fast" in an API video name doesn't mean real-time - it means cheaper and quicker to turn around, which is exactly what you want when you're iterating on a prompt. seedance-2.0-fast is the base fast model on the new.ip233.com relay, and this node is its ComfyUI face: both 480p and 720p selectable, 4–15 seconds, and a 生成原生音频 toggle so the model can synthesize its own audio track instead of returning a silent clip. It's the Seedance node you run ten times while you hunt for the shot, saving the expensive 1080p render for the winner.

It's part of ComfyUI-Tikpan-Pro (official plugin for Tikpan.com), new.ip233.com relay group - key from https://new.ip233.com, not Tikpan. Seedance is ByteDance's closed video line, so all of this is metered cloud work.

How it works

The standard relay pattern: POST {model: seedance-2.0-fast, prompt, duration, aspect_ratio, resolution, audio, ...} to https://new.ip233.com/v1/videos, poll, download the MP4 to your output folder, return VIDEO + path + URL + logs. The 生成原生音频 toggle adds an audio: true flag to the payload, which matters if your clip is going straight into a social feed and you don't want to bother with a separate TTS step.

The inputs that matter

• 生成指令 - the prompt.
• 视频时长 - 4–15s.
• 分辨率 - 480p or 720p. For iteration, 480p is the point; 720p when the shot feels close.
• 画面比例 - six options (16:9, 9:16, 1:1, 21:9, 3:4, 4:3).
• 生成原生音频 - on/off. Note the fine print: this only works on the base fast model; the fixed-resolution fast variants silently disable it.
• 参考图1 … 4 - up to four reference images (the fast base is capped at 4, unlike the 9-ref fixed variants).
• 首帧图 / 尾帧图, 视频URL列表 (up to 3), 音频URL列表 (up to 1).

Optional tail: 最长等待秒数 (600), 查询间隔秒数 (5), 校验HTTPS证书, 跳过错误.

Outputs

视频输出 (VIDEO), 本地保存路径, 视频云端直链, 任务ID, 完整日志.

Install

cd ComfyUI/custom_nodes
git clone https://github.com/htrert/ComfyUI-Tikpan-Pro

or ComfyUI Manager → Tikpan → Install → restart. No downloads.

Gotchas

The base-fast node is the one with the most knobs, and the knob that surprises people is the ref-image cap: 4 images, not 9 - the fixed-resolution fast nodes (fast-480p/fast-720p) actually allow more references because they're treated as a different model profile. And remember the cluster-wide rule: first/last-frame mode can't coexist with reference images or video/audio URLs (二选一). If the relay's "fast" still feels slow, it's queue time on their side - your 最长等待秒数 just sets how long you're willing to sit. Iterate here, deliver elsewhere.