WPT
wpt / webcodecs / video-encoder-rescaling.https.any.worker.html?h264_avc
Spec: WebCodecs ↗
Runs: Chrome 155.0.8038.0 (wpt@397d01d8e, 2026-09-02) | Firefox 157.0a1 (wpt@397d01d8e, 2026-09-02) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-5f6fa (wpt@b1a7025f8, 2026-09-02) | Servo Servo 0.5 (wpt@2ccd2cbf8, 2026-09-01) | Blitz 7727414ca (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 | 18/18 | 18/18 | 0/18 | 0/18 | 0/18 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Scaling Image in Encoding from 64 x 64 to 128 x 128 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 64 x 64 to 128 x 128 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 128 to 128 x 128 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 128 to 128 x 128 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 128 to 64 x 64 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 128 to 64 x 64 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 32 x 32 to 96 x 96 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 32 x 32 to 96 x 96 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 192 x 192 to 64 x 64 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 192 x 192 to 64 x 64 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 64 x 32 to 128 x 64 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 64 x 32 to 128 x 64 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 256 to 64 x 128 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 256 to 64 x 128 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 64 x 64 to 128 x 192 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 64 x 64 to 128 x 192 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 192 to 64 x 64 Format: RGBX | PASS | PASS | FAIL | FAIL | FAIL | — |
| Scaling Image in Encoding from 128 x 192 to 64 x 64 Format: I420 | PASS | PASS | FAIL | FAIL | FAIL | — |