☁️BizyAir Seedance 1.5 Pro Text To Video

Seedance is ByteDance's video line, and like its image sibling Seedream, it's API-only by policy, not by accident - ByteDance keeps every finished product closed while giving away the components underneath it (Depth Anything, PuLID, and friends). This node is how you reach doubao-seedance-1-5-pro-251215 from inside a ComfyUI graph: type a prompt, get a video back, pay BizyAir credits per call.

What it does

Straightforward text-to-video: a prompt, plus a small pile of video-specific knobs. resolution (480p/720p/1080p) and ratio (16:9, 4:3, 1:1, 3:4, 9:16, 21:9, or adaptive) work together to set the actual output dimensions - the tooltip is explicit that the two jointly decide frame size, so check ByteDance's own docs if you need an exact pixel count for a specific combination. duration runs 2–12 seconds. fps shows up as a dropdown but only has one real option, 24 - it's effectively locked, not a setting you're choosing.

camerafixed asks the platform to try adding a "keep the camera still" instruction to your prompt behind the scenes - the tooltip is upfront that this isn't guaranteed to work, just attempted.

The one genuinely new capability over the 1.0 line is generate_audio. Seedance 1.5 Pro can generate synced dialogue, sound effects, and background music that match the visual content, driven straight from your prompt - the tooltip's own example is a man telling a woman "you can't point at the moon with your finger anymore," with the advice to wrap dialogue in quotes for cleaner audio results. It's flagged as affecting billing, so it's not a free toggle.

seed runs -1 (random) to a fixed max for reproducibility.

Output

A single video, plus the passthrough bizyair_model_name label.

Installing it

ComfyUI Manager: search BizyAir, install, restart. Or:

cd ComfyUI/custom_nodes && git clone https://github.com/siliconflow/BizyAir.git

Restart after. Nothing to download locally - the generation happens on ByteDance's infrastructure via BizyAir's proxy, not your GPU. You do need a BizyAir account and an API key configured before this node will do anything (the pack walks you through it on first use).

Where people get burned

Set expectations on quality before you burn credits. Community reports on Seedance 1.5's actual video output have been mixed - complaints about motion coherence on anything beyond simple actions show up in the wild, and this is a fast-moving line where ByteDance ships new versions (2.0, 2.5) within months. If a generation looks off, it may be the model, not your prompt.

fps isn't actually adjustable despite looking like a dropdown - don't spend time hunting for a way to change it beyond 24.

Audio costs extra. If your bill looks higher than expected, check whether generate_audio got left on from a previous run.

It's a paid API, not a free local render. BizyAir turned on billing in April 2025; queuing this node repeatedly while iterating on a prompt adds up fast compared to a local video model you already own the GPU time for.