WPT
wpt / media-source / mediasource-timestamp-offset.html
Spec: Media Source Extensions™ ↗
Runs: Chrome 155.0.8039.0 (wpt@ffab1bde3, 2026-09-03) | Firefox 157.0a1 (wpt@ffab1bde3, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a9df8 (wpt@9b4cabf6d, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 15/15 | 15/15 | 15/15 | 12/15 | 0/15 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Test setting SourceBuffer.timestampOffset to a positive number. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to a negative number. | PASS | PASS | PASS | FAIL | FAIL | — |
| Test setting SourceBuffer.timestampOffset to zero. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to positive infinity. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to negative infinity. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to NaN. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to undefined. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to null. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to false. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to true. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to a number string. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting SourceBuffer.timestampOffset to an empty string. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting timestampOffset in 'ended' state causes a transition to 'open'. | PASS | PASS | PASS | FAIL | FAIL | — |
| Test getting the initial value of timestampOffset. | PASS | PASS | PASS | PASS | FAIL | — |
| Test setting timestampoffset after removing the sourcebuffer. | PASS | PASS | PASS | FAIL | FAIL | — |