| <!doctype html> |
| <html> |
| <head> |
| <title>MediaRecorder Start</title> |
| <link rel="help" href="https://w3c.github.io/mediacapture-record/MediaRecorder.html#dom-mediarecorder-start"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <canvas id="canvas" width="200" height="200"> |
| </canvas> |
| <script> |
| function createVideoStream() { |
| canvas.getContext('2d'); |
| return canvas.captureStream(); |
| } |
| |
| test(t => { |
| const mimeType = [ 'audio/aac', 'audio/ogg', 'audio/webm' ].find(MediaRecorder.isTypeSupported); |
| const mediaRecorder = new MediaRecorder(createVideoStream(), {mimeType}); |
| assert_throws_dom("NotSupportedError", () => mediaRecorder.start()); |
| }, "MediaRecorder cannot record the stream using the current configuration"); |
| </script> |
| </body> |
| </html> |
