ComfyUI Node: Video Dump Frames

Video Dump Frames:

The Video Dump Frames node is designed to extract individual frames from a video file and save them as image files. This node is particularly useful for AI artists who need to analyze, manipulate, or use specific frames from a video in their creative projects. By converting video frames into image files, you can easily access and edit each frame using image editing tools or incorporate them into other workflows. The node leverages the powerful ffmpeg library to handle video processing, ensuring compatibility with a wide range of video formats and providing high-quality frame extraction.

Video Dump Frames Input Parameters:

video_path

This parameter specifies the path to the video file from which frames will be extracted. It is essential to provide the correct path to ensure the node can locate and process the video. The video file should be in a format supported by ffmpeg.

output_path

This parameter defines the directory where the extracted frames will be saved. If not specified, the default path is set to ./ComfyUI/input/frames. Ensure the directory exists or can be created by the node to avoid errors.

prefix

This parameter allows you to set a prefix for the filenames of the extracted frames. The default value is frame_. This prefix helps in organizing and identifying the frames, especially when dealing with multiple videos or large numbers of frames.

extension

This parameter specifies the file extension for the extracted frames. The default value is png, but you can choose other formats like jpg or bmp depending on your needs. The chosen format will affect the quality and size of the extracted frames.

filenumber_digits

This parameter determines the number of digits used in the frame filenames. For example, if set to 4, the frames will be named frame_0001.png, frame_0002.png, etc. The default value is -1, which means no zero-padding will be applied. Adjusting this parameter can help in maintaining a consistent naming convention, especially when dealing with a large number of frames.

Video Dump Frames Output Parameters:

output_path

This output parameter returns the absolute path to the directory where the frames have been saved. This information is useful for locating the extracted frames and using them in subsequent steps of your workflow.

processed

This output parameter indicates the number of frames that have been successfully extracted and saved. It provides a quick way to verify that the extraction process has completed and to check the number of frames available for further use.

Video Dump Frames Usage Tips:

• Ensure that the ffmpeg_bin_path is correctly set in the configuration file to avoid errors related to ffmpeg not being found.
• Use a consistent prefix and zero-padding for filenames to keep the frames organized and easily identifiable.
• Choose the appropriate file extension based on your quality and size requirements. For high-quality frames, png is recommended, while jpg can be used for smaller file sizes.
• Verify the output path and ensure it is writable to avoid permission issues during the frame extraction process.

Video Dump Frames Common Errors and Solutions:

Unable to use dump frames because the ffmpeg_bin_path is not set

• Explanation: This error occurs when the path to the ffmpeg binary is not specified in the configuration file.
• Solution: Set the ffmpeg_bin_path in the configuration file to the correct path where ffmpeg is installed.

Invalid video dimensions

• Explanation: This error indicates that the video file has invalid dimensions, which could be due to a corrupted file or unsupported format.
• Solution: Verify the video file's integrity and ensure it is in a supported format. Try re-encoding the video using a different tool if necessary.

Error resizing frame

• Explanation: This error occurs when there is an issue resizing a frame during the extraction process.
• Solution: Check the frame dimensions and ensure they are valid. If the error persists, try using a different video file or adjusting the frame extraction parameters.

Unable to create video at: <output_file>

• Explanation: This error indicates that the node was unable to create the output video file, possibly due to permission issues or an invalid output path.
• Solution: Verify the output path and ensure it is writable. Check for any permission issues and resolve them before re-running the node.