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Codec: avc1.421434

87.2% Encoder Support
279,481 of 320,514 sessions supported encoding
99.93% Decoder Support
269,538 of 269,721 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.2
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,514 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,598 / 143,857 99.93% 19,621 / 19,634 — 99.76% 63,505 / 63,659 98.95% 7,667 / 7,748
SafariSafari
 — 1.97% 170 / 8,626 1.57% 493 / 31,436 — —
EdgeEdge
 100.0% 31,017 / 31,018 100.0% 354 / 354 — 99.28% 965 / 972 96.88% 62 / 64
FirefoxFirefox
 96.16% 9,353 / 9,726 100.0% 1,289 / 1,289 — 0.0% 0 / 30 99.15% 1,289 / 1,300

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,721 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,609 / 121,645 99.93% 16,006 / 16,018 — 99.98% 53,709 / 53,718 99.05% 6,468 / 6,530
SafariSafari
 — 99.92% 7,183 / 7,189 99.98% 25,804 / 25,808 — —
EdgeEdge
 100.0% 27,078 / 27,079 100.0% 304 / 304 — 100.0% 896 / 896 98.28% 57 / 58
FirefoxFirefox
 99.99% 7,927 / 7,928 100.0% 1,068 / 1,068 — 0.0% 0 / 25 99.25% 1,058 / 1,066