Amazon's login flow sometimes serves an animated GIF captcha from opfcaptcha-prod.s3.amazonaws.com — 6 sliding characters, text scrolls horizontally across ~10-15 frames.

Standard captcha services (2captcha imageCaptcha, etc.) aren't designed for animated GIFs. My current approach: extract the last frame, preprocess, send as a static image. Hit or miss.

Questions: 1. Has anyone solved this reliably? What approach/service? 2. Is there an existing API that handles animated GIF captchas natively? 3. Would there be demand for a dedicated solver API specifically for this type?

Running into this while building automation tools that interact with Amazon. Any pointers appreciated.