ComfyUI Node
arkennemasis fal · MiniMax H3 Max Insert Video · $0.05-0.06/s
Insert a new scene into an existing video with H3 Max. Guide the scene with a prompt, reference images, or reference videos, then return to the original footage. Pricing (from fal, 2026-09-30): Your request will cost $0.05 per second of generated scene at 480p or $0.06 per second at 768p. Only the newly generated scene duration is billed, not the full output video. The first 4,096 reference tokens are included; additional reference tokens cost $0.02 per 1,000 tokens, prorated. Model page: https://fal.ai/models/minimax/h3-max/insert-video Key: FAL_KEY in the .env next to run_nvidia_gpu.bat. Results are saved in output/fal/minimax_h3-max_insert-video/.
arkennemasis fal · MiniMax H3 Max Insert Video · $0.05-0.06/s
- video
- reference_image_1
- reference_image_2
- reference_image_3
- reference_image_4
- reference_image_5
- reference_image_6
- reference_video_1
- reference_video_2
- reference_video_3
- video
- video_path
- frame_count
- height
- injected_duration
- start_time
- duration
- width
- seed
- expanded_prompt
- timings
- source
- resume_time
- info
◄prompt►
◄start_time1.63►
◄resume_time1.64►
◄duration5.00►
◄resolution768p►
◄seed-1►
◄enable_prompt_expansiontrue►
◄color_matchtrue►
◄max_cost_usd20.0►
◄reuse_identical_runtrue►
◄extra_json►
◄max_concurrent1►
Categoryarkennemasis/fal/Video/MiniMax
Inputs (22)
| Name | Type | Default | Description |
|---|---|---|---|
| video | VIDEO | — | |
| prompt | STRING | Empty leaves it out. | |
| start_time | FLOAT | 1.631.625–60 | — |
| resume_time | FLOAT | 1.641.635–60 | — |
| duration | FLOAT | 5.005–13 | — |
| resolution | COMBO | 768p | 2 options: 480p, 768p |
| seed | INT | -1-1–2147483647 | -1 leaves it to the model. |
| enable_prompt_expansion | BOOLEAN | true | — |
| color_match | BOOLEAN | true | — |
| reference_image_1opt | IMAGE | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_image_2opt | IMAGE | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_image_3opt | IMAGE | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_image_4opt | IMAGE | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_image_5opt | IMAGE | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_image_6opt | IMAGE | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_video_1opt | VIDEO | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_video_2opt | VIDEO | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| reference_video_3opt | VIDEO | Each socket may carry a batch; they are sent in socket order (the first picture of socket 1 is number 1). | |
| max_cost_usdopt | FLOAT | 20.00–100000 | Safety cap. If the estimated cost of this run is above this many US dollars the node stops BEFORE sending anything to fal. 0 = no cap. |
| reuse_identical_runopt | BOOLEAN | true | If these exact inputs (the settings AND the same pictures/clips/audio) were already paid for and the files are still in output/fal, return them instead of paying again - also after a ComfyUI restart. Turn off for a fresh take with the same settings. |
| extra_jsonopt | STRING | Advanced: a JSON object merged into the request last, for any fal field this node has no box for. Example: {"seed": 7}. Leave empty normally. | |
| max_concurrentopt | INT | 11–32 | How many paid fal calls may run at the same time in one run, across every fal node. 1 (default) = one after another. This node starts its paid part only while fewer than this many fal calls are running. Once any fal node fails, the ones still waiting are not started, so nothing more is billed. |
Outputs (14)
| Name | Type | Description |
|---|---|---|
| video | VIDEO | — |
| video_path | STRING | — |
| frame_count | INT | — |
| height | INT | — |
| injected_duration | FLOAT | — |
| start_time | FLOAT | — |
| duration | FLOAT | — |
| width | INT | — |
| seed | INT | — |
| expanded_prompt | STRING | — |
| timings | STRING | — |
| source | STRING | — |
| resume_time | FLOAT | — |
| info | STRING | JSON: request id, cost estimate, saved files and fal's full answer. |