title: Why different frames of same video have different sizes?
body: <p>In a video I am working on, I had to split the video into frames. But I have noticed the size of most of the frame is different. A solid white frame have a size of 2KB but some have the size of 36KB. Why is that? All the frames have same height, width, same number of pixels, same bit depth. So why the sizes are different? Thanks</p>