Evocam’s default settings are the reason this search query works so reliably. When a user installs Evocam and enables the web server feature without proper security, it often creates a directory structure like this:

Programs (like the classic EvoCam or modern equivalents like Blue Iris) that process the video feed.

This specifies the file type. Most modern cameras use JavaScript or RTSP streams, but older cameras (and Evocam) generated a simple webcam.html file. This file contained the HTML code necessary to display the MJPEG (Motion JPEG) stream inside a browser window.