| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| .video { |
| position: absolute; |
| left: 10px; |
| top: 50px; |
| height: 360px; |
| width: 680px; |
| background-color: black; |
| will-change: transform; |
| } |
| |
| .masker { |
| position: absolute; |
| left: 10px; |
| top: 50px; |
| height: 360px; |
| width: 680px; |
| border-top: 50px solid white; |
| border-right: 300px solid white; |
| border-bottom: 50px solid white; |
| border-left: 300px solid white; |
| box-sizing: border-box; |
| } |
| </style> |
| </head> |
| <body> |
| <p>Tests that the video frames of an HTMLVideoElement are black if no video MediaStreamTrack is enabled.</p> |
| <div class="video"></div> |
| <div class="masker"></div> |
| |
| </body> |
| </html> |
