Regressive JPEGs: Hiding Videos Inside Single Image Files

Regressive JPEGs

I discovered how to exploit the progressive loading feature of JPEG files to embed entire video sequences within a single image. By concatenating multiple DC-only scans and manipulating spectral ranges, I created files that switch between different frames as they download over slow networks. While this technique has no practical use due to a lack of timing control, it allows for creative trolling and unique visual experiments without using JavaScript or CSS.

"Since a DC-only frame is a standards-compliant image, creating them doesn't require anything special."