FFmpeg: Extract Raw Video Data with Alpha Channel (RGBA)

This command uses FFmpeg to convert the input video file 'input.mp4' to a rawvideo format with RGBA pixel format, and saves it as 'output.rgba'.

• '-i input.mp4' specifies the input file.
• '-c:v rawvideo' sets the video codec to rawvideo.
• '-pix_fmt rgba' sets the pixel format to RGBA.

This command can be useful for extracting the raw video data with alpha channel from a video file, which can then be used for further processing or compositing with other video or image files.