An MP4 is never just a video file. With AI models now autonomously discovering legacy zero-days in FFmpeg and OpenBSD, the case for strict process isolation in media pipelines has never been stronger.
Most people see an .mp4 file, double-click it and expect a video to play. Early in my engineering journey I did the same. We treat the file extension as if it’s the video itself. But if you’ve ever tried to play a file only to hear audio with a black screen or if a crash left you with a completely unplayable recording you’ve brushed up against a fundamental truth of digital media. ...