ComfyUI Node: Schedule Audio Framesync

Schedule Audio Framesync:

SaltAudioFramesyncSchedule is a node designed to synchronize audio data with video frames, ensuring that the audio's amplitude and other characteristics are accurately mapped to corresponding video frames. This node is particularly useful for AI artists who want to create audiovisual experiences where the audio dynamics directly influence the visual output. By analyzing the audio file and breaking it down into frames, this node allows for precise control over how audio features like loudness are represented visually, enhancing the overall coherence and impact of the audiovisual project.

Schedule Audio Framesync Input Parameters:

audio

This parameter takes the audio file that you want to synchronize with the video frames. The audio should be in a format that can be processed, such as WAV. The quality and characteristics of the audio file will directly impact the synchronization results.

amp_control

This parameter controls the amplitude scaling of the audio. It adjusts the loudness levels to ensure they fit within the desired range for synchronization. The value should be set based on the desired loudness effect in the visual output.

amp_offset

This parameter provides an offset to the amplitude values, allowing for fine-tuning of the loudness levels. It is useful for ensuring that the audio's dynamic range is appropriately mapped to the visual frames.

frame_rate

This parameter specifies the frame rate of the video to which the audio will be synchronized. It is measured in frames per second (fps). The frame rate is crucial for accurate synchronization, as it determines the duration of each frame.

start_frame

This parameter indicates the starting frame from which the audio synchronization should begin. It allows for precise control over the synchronization process, enabling you to start the audio analysis from a specific point in the video.

end_frame

This parameter specifies the ending frame for the audio synchronization. If set to a negative value, the synchronization will continue until the end of the audio file. This parameter helps in defining the exact segment of the video that will be synchronized with the audio.

curves_mode

This parameter determines the type of easing function to be applied to the audio data. Easing functions can smooth out the transitions between frames, creating a more visually appealing synchronization. Options include various easing functions like linear, quadratic, and cubic.

Schedule Audio Framesync Output Parameters:

average_sum

This output parameter provides a list of average loudness values for each frame. These values represent the overall loudness of the audio segment corresponding to each video frame, allowing for precise visual representation of audio dynamics.

max_frames

This output parameter indicates the total number of frames that were processed during the synchronization. It helps in understanding the scope of the synchronization and the length of the video segment that was analyzed.

frame_rate

This output parameter returns the frame rate used for synchronization. It confirms the frame rate setting and ensures that the synchronization was performed at the correct speed.

Schedule Audio Framesync Usage Tips:

• Ensure that your audio file is of high quality and in a compatible format like WAV to achieve the best synchronization results.
• Adjust the amp_control and amp_offset parameters to fine-tune the loudness levels and ensure they fit well within the visual context.
• Use the curves_mode parameter to apply easing functions that can smooth out transitions and create a more visually appealing synchronization.
• Set the start_frame and end_frame parameters to focus on specific segments of the video, allowing for targeted synchronization.

Schedule Audio Framesync Common Errors and Solutions:

"Invalid audio format"

• Explanation: The audio file provided is not in a supported format.
• Solution: Ensure that the audio file is in a compatible format like WAV.

"Frame rate mismatch"

• Explanation: The frame rate specified does not match the video frame rate.
• Solution: Verify and set the correct frame rate that matches your video.

"Out of range frame indices"

• Explanation: The start_frame or end_frame parameters are set outside the valid range of the audio file.
• Solution: Adjust the start_frame and end_frame parameters to be within the valid range of the audio file's duration.