WPT
wpt / webrtc-extensions / RTCRtpEncodingParameters-scaleResolutionDownTo.https.html
Spec: https://w3c.github.io/webrtc-extensions/ ↗
Runs: Chrome 155.0.8041.0 (wpt@18be93235, 2026-09-04) | Firefox 157.0a1 (wpt@18be93235, 2026-09-04) | Safari 251 preview (wpt@2c385f65e, 2026-09-04) | Ladybird 1.0-70fb3 (wpt@0c9001c53, 2026-09-04) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | 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 | 14/14 | 1/14 | 2/14 | 0/14 | 0/14 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| addTransceiver: Invalid scaling throws | PASS | FAIL | FAIL | FAIL | FAIL | — |
| setParameters: Invalid scaling throws | PASS | PASS | FAIL | FAIL | FAIL | — |
| addTransceiver: Specifying scaling on a subset of active encodings throws | PASS | FAIL | FAIL | FAIL | FAIL | — |
| addTransceiver: Specifying scaling on inactive encodings is optional | PASS | FAIL | PASS | FAIL | FAIL | — |
| setParameters: Specifying scaling on a subset of active encodings throws | PASS | FAIL | FAIL | FAIL | FAIL | — |
| setParameters: Specifying scaling on inactive encodings is optional | PASS | FAIL | PASS | FAIL | FAIL | — |
| getParameters reflect the current scaleResolutionDownTo | PASS | FAIL | FAIL | FAIL | FAIL | — |
| addTransceiver: scaleResolutionDownBy is ignored when scaleResolutionDownTo is specified | PASS | TIMEOUT | TIMEOUT | FAIL | FAIL | — |
| setParameters: scaleResolutionDownBy is ignored when scaleResolutionDownTo is specified | PASS | NOTRUN | NOTRUN | FAIL | FAIL | — |
| addTransceiver: scaleResolutionDownTo with half resolution | PASS | NOTRUN | NOTRUN | FAIL | FAIL | — |
| setParameters: Modify scaleResolutionDownTo while sending | PASS | NOTRUN | NOTRUN | FAIL | FAIL | — |
| scaleResolutionDownTo is orientation agnostic | PASS | NOTRUN | NOTRUN | FAIL | FAIL | — |
| scaleResolutionDownTo does not change aspect ratio | PASS | NOTRUN | NOTRUN | FAIL | FAIL | — |
| scaleResolutionDownTo with simulcast | PASS | NOTRUN | NOTRUN | FAIL | FAIL | — |