Concurrent Submit | Zhenzhen Doubao SeedEdit2.0

Doubao SeedEdit is ByteDance's image-editing model - you give it one image and an instruction, it returns an edited version. This concurrent wrapper around ComflySeededit adds two things worth caring about: batching (queue a pile of edits without freezing the graph) and an honest-to-god watermark system built right into the node.

That last part is unusual enough to call out. Most API packs leave watermarking to you. This node has add_logo, logo_position (右下角/左下角/左上角/右上角 - the four corners), logo_language (中文/英文), and logo_text. Flip add_logo on, type your brand, and every output comes back stamped. If you're generating listing or social content at volume, that's a feature you'd otherwise build a whole post-processing step for.

Mechanically it's the pack standard: shared image pool (30 workers), COMFLY_IMAGE_FUTURE task output, and you collect with Concurrent Collect Images (ComflyConcurrent_Image_Await) - up to 30 tasks, returned as image_1…image_30 in slot order.

The inputs

• image - the source image. Required; there's no text-to-image mode here. This is an edit node, full stop.
• prompt - what to change. Multiline.
• scale - edit strength, 0 to 1, default 0.5. This is the dial you'll actually touch: low scale = subtle touch-up, high scale = aggressive rewrite. Start at 0.5 and move in 0.1 steps.
• seed - -1 (random) to 2147483647.
• add_logo / logo_position / logo_language / logo_text - the watermark suite described above.
• api_key and skip_error - the usual.

Install

cd ComfyUI/custom_nodes
git clone https://github.com/T8mars/Comfyui-zhenzhen

Or ComfyUI Manager → search Comfyui-zhenzhen → restart, token into api_key (ai.t8star.org overseas; api.seedance.nz for the domestic discount).

Gotchas

• Scale is a strength knob, not a slider you max out. Crank to 1.0 and SeedEdit will happily redraw most of the image. For "keep everything, change one thing," 0.3–0.5 is the sane zone.
• Chinese-language defaults. The logo position/language enums ship in Chinese (右下角, 中文). If the UI looks odd, that's why - the dropdowns work exactly as labeled, just pick the English option if you want it.
• Every edit is a paid API call with an upload. Batch math matters: N edits = N generations + N image uploads. And as with everything in this pack, a timeout isn't proof of death - check the async-task page before resubmitting.