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Codec: avc1.420433

87.24% Encoder Support
279,918 of 320,852 sessions supported encoding
99.93% Decoder Support
269,502 of 269,687 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 320,852 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 143,992 / 144,244 99.9% 19,570 / 19,589 — 99.77% 63,347 / 63,490 98.64% 7,642 / 7,747
SafariSafari
 — 2.29% 199 / 8,694 1.44% 449 / 31,268 — —
EdgeEdge
 100.0% 31,177 / 31,177 100.0% 391 / 391 — 99.69% 963 / 966 100.0% 61 / 61
FirefoxFirefox
 96.06% 9,370 / 9,754 100.0% 1,355 / 1,355 — 0.0% 0 / 22 98.93% 1,292 / 1,306

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,687 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,594 / 121,631 99.88% 15,922 / 15,941 — 99.99% 53,521 / 53,528 98.88% 6,507 / 6,581
SafariSafari
 — 99.95% 7,291 / 7,295 99.99% 25,610 / 25,613 — —
EdgeEdge
 100.0% 27,242 / 27,242 100.0% 345 / 345 — 100.0% 881 / 881 100.0% 58 / 58
FirefoxFirefox
 99.97% 7,973 / 7,975 100.0% 1,120 / 1,120 — 0.0% 0 / 18 99.16% 1,061 / 1,070