- A video card plays its video muted while the pointer is on it, or while in view when
Settings -> Video covers says always play (the model covers' rule). The <video> exists only
while playing, so a page of videos decodes nothing at rest; it lets clicks and drags through.
- The viewer sizes a video to the window (keeping its shape): 480p outputs looked small.
- Double-click in the viewer toggles full screen (checked afterwards so a browser that does it
natively does not toggle twice).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>