ConcatenateVideo - ComfyUI Built-in Node Documentation - ComfyUI

Concatenates multiple video segments into a single video, preserving the order in which they are connected. Compatible encoded inputs are combined without being decoded, and an optional separate audio track can be supplied to replace the original audio.

Inputs

Parameter	Description	Data Type	Required	Range
`videos`	Video segments to concatenate in input order. Connect 1 to 100 videos; each video appears as a separate input slot labeled `video_1`, `video_2`, etc.	VIDEO	Yes	1 to 100 segments
`codec`	Codec used to encode video tensors. Auto uses H.264; already encoded videos remain unchanged. Default: “auto”	COMBO	Yes	`"auto"` Other options are defined by the available video codec types.
`complete_audio`	Optional complete soundtrack for the concatenated video. Overrides audio carried by the input videos.	AUDIO	No	N/A

Note: The videos input accepts between 1 and 100 video segments. If complete_audio is provided, it replaces the audio of all input videos. When codec is set to “auto”, compatible encoded inputs are concatenated without decoding.

Outputs

Output Name	Description	Data Type
`VIDEO`	The concatenated video.	VIDEO

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