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Codec: avc1.420033

99.64% Encoder Support
2,139,974 of 2,147,690 sessions supported encoding
99.81% Decoder Support
2,092,504 of 2,096,576 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,147,690 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 866,890 / 867,476 99.83% 100,454 / 100,625 — 99.51% 646,096 / 649,291 98.02% 43,038 / 43,906
SafariSafari
 — 99.8% 47,925 / 48,023 99.98% 218,058 / 218,108 — —
EdgeEdge
 99.99% 143,338 / 143,348 100.0% 1,464 / 1,464 — 99.84% 4,259 / 4,266 97.98% 680 / 694
FirefoxFirefox
 96.01% 51,524 / 53,666 99.99% 7,294 / 7,295 — 2.08% 2 / 96 98.83% 5,912 / 5,982

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,576 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,956 / 845,152 99.82% 96,766 / 96,938 — 99.65% 636,972 / 639,224 98.34% 42,026 / 42,736
SafariSafari
 — 99.86% 46,578 / 46,643 99.98% 212,451 / 212,502 — —
EdgeEdge
 99.99% 139,303 / 139,312 100.0% 1,426 / 1,426 — 100.0% 4,179 / 4,179 98.39% 674 / 685
FirefoxFirefox
 99.97% 51,806 / 51,824 99.99% 7,081 / 7,082 — 2.41% 2 / 83 98.22% 5,644 / 5,746