ComfyUI Node: 🔊📹 Audio Video Sync

🔊📹 Audio Video Sync:

The Bjornulf_AudioVideoSync node is a specialized tool designed to synchronize audio and video content with adjustable speed settings. This node is particularly useful for AI artists and creators who work with multimedia projects, as it allows for seamless integration of audio tracks with video files or image sequences. By providing configurable speed adjustments, the node ensures that the audio and video durations match perfectly, enhancing the overall quality and coherence of the final output. The node supports various input formats, including video files, image sequences, and audio files, making it a versatile solution for diverse creative needs. Its primary goal is to facilitate the synchronization process, allowing users to focus on the artistic aspects of their projects without worrying about technical synchronization issues.

🔊📹 Audio Video Sync Input Parameters:

max_speedup

This parameter defines the maximum allowable speed increase for the audio or video to achieve synchronization. It is crucial for ensuring that the synchronization process does not result in unnaturally fast playback, which could detract from the viewer's experience. The default value is typically set to 1.5, meaning the speed can be increased by up to 50% of the original speed.

max_slowdown

This parameter sets the maximum allowable speed decrease for the audio or video. It ensures that the synchronization process does not slow down the playback excessively, which could lead to a loss of engagement. The default value is usually 0.5, allowing the speed to be reduced to half of the original speed.

AUDIO

This input can be an audio object or a path to an audio file. It is essential for providing the audio content that needs to be synchronized with the video. If not provided, an audio path must be specified.

audio_path

This parameter specifies the file path to the audio content if an AUDIO object is not provided. It is necessary for loading the audio data into the node for processing.

audio_duration

This optional parameter indicates the duration of the audio content. If not provided, the node will calculate the duration automatically. It is useful for ensuring accurate synchronization with the video.

video_path

This parameter specifies the file path to the video content that needs to be synchronized with the audio. It is required if image sequences are not provided.

IMAGES

This input can be a sequence of images that will be processed into a video. It is an alternative to providing a video file and is useful for projects that involve image-based animations.

output_fps

This parameter defines the frames per second for the output video. It is important for maintaining the desired playback speed and quality of the synchronized video.

🔊📹 Audio Video Sync Output Parameters:

video_frames

This output provides the synchronized video frames in a format compatible with ComfyUI. It represents the visual content that has been adjusted to match the audio duration.

sync_audio

This output returns the processed audio in a consistent format, ensuring that it is synchronized with the video content. It is crucial for maintaining audio-visual coherence.

sync_audio_path

This parameter provides the file path to the saved synchronized audio file. It is useful for accessing the audio content separately if needed.

sync_video_path

This parameter provides the file path to the saved synchronized video file. It allows users to access the final video output for further use or distribution.

original_duration

This output indicates the original duration of the video or image sequence before synchronization. It is useful for reference and comparison purposes.

sync_video_duration

This parameter provides the duration of the synchronized video, ensuring that it matches the audio duration.

audio_duration

This output indicates the duration of the audio content used for synchronization. It is important for verifying the synchronization process.

sync_audio_duration

This parameter provides the duration of the synchronized audio, ensuring that it matches the video duration.

sync_frame_count

This output indicates the number of frames in the synchronized video, which is useful for verifying the synchronization process and ensuring the desired output quality.

🔊📹 Audio Video Sync Usage Tips:

• Ensure that either an AUDIO object or an audio path is provided to avoid errors during synchronization.
• Adjust the max_speedup and max_slowdown parameters carefully to maintain natural playback speeds and avoid distortion.
• Use the output_fps parameter to control the smoothness and quality of the synchronized video output.

🔊📹 Audio Video Sync Common Errors and Solutions:

"Either AUDIO or audio_path must be provided"

• Explanation: This error occurs when neither an AUDIO object nor an audio path is specified, which is necessary for the synchronization process.
• Solution: Provide either an AUDIO object or a valid audio file path to proceed with synchronization.

"Either video_path or IMAGES must be provided"

• Explanation: This error indicates that neither a video file path nor an image sequence has been provided, both of which are required for video processing.
• Solution: Ensure that you provide a valid video file path or a sequence of images to create a video for synchronization.