WPT
wpt / webrtc / RTCRtpTransceiver-setCodecPreferences.html?interop-2026
Spec: WebRTC ↗
Runs: Chrome 155.0.8039.0 (wpt@6ec9fd59f, 2026-09-03) | Firefox 157.0a1 (wpt@6ec9fd59f, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-795e1 (wpt@7e3d005d7, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 7/7 | 7/7 | 7/7 | 0/7 | 0/7 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| setCodecPreferences() with only H264 should succeed | PASS | PASS | PASS | FAIL | FAIL | — |
| setCodecPreferences() should allow setting H264 as first codec | PASS | PASS | PASS | FAIL | FAIL | — |
| setCodecPreferences() modifies the order of video codecs in createOffer | PASS | PASS | PASS | FAIL | FAIL | — |
| setCodecPreferences() can remove rtx | PASS | PASS | PASS | FAIL | FAIL | — |
| setCodecPreferences() filters on receiver and prefers receiver order | PASS | PASS | PASS | FAIL | FAIL | — |
| setCodecPreferences should accept audio codecs regardless of mimeType case | PASS | PASS | PASS | FAIL | FAIL | — |
| setCodecPreferences should accept video codecs regardless of mimeType case | PASS | PASS | PASS | FAIL | FAIL | — |