KlingLipSyncAudioToVideoNode - ComfyUI Built-in Node Documentation

Complete documentation for the KlingLipSyncAudioToVideoNode node in ComfyUI. Learn its inputs, outputs, parameters and usage.

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Kling Lip Sync Audio to Video Node synchronizes mouth movements in a video file to match the audio content of an audio file. This node analyzes the vocal patterns in the audio and adjusts the facial movements in the video to create realistic lip-syncing. The process requires both a video containing a distinct face and an audio file with clearly distinguishable vocals.

Inputs

Parameter	Data Type	Required	Range	Description
video	VIDEO	Yes	-	The video file containing a face to be lip-synced
audio	AUDIO	Yes	-	The audio file containing vocals to sync with the video
voice_language	COMBO	No	"en" "zh" "es" "fr" "de" "it" "pt" "pl" "tr" "ru" "nl" "cs" "ar" "ja" "hu" "ko"	The language of the voice in the audio file (default: “en”)

Important Constraints:

• The audio file should not be larger than 5MB
• The video file should not be larger than 100MB
• Video dimensions should be between 720px and 1920px in height/width
• Video duration should be between 2 seconds and 10 seconds
• The audio must contain clearly distinguishable vocals
• The video must contain a distinct face

Outputs

Output Name	Data Type	Description
output	VIDEO	The processed video with lip-synced mouth movements
video_id	STRING	The unique identifier for the processed video
duration	STRING	The duration of the processed video