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Codec: avc1.4d1433

86.48% Encoder Support
277,635 of 321,031 sessions supported encoding
99.94% Decoder Support
269,700 of 269,873 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,031 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.3% 143,174 / 144,177 99.87% 19,583 / 19,609 — 97.52% 62,374 / 63,957 97.81% 7,489 / 7,657
SafariSafari
 — 1.96% 170 / 8,692 1.39% 436 / 31,312 — —
EdgeEdge
 99.79% 31,142 / 31,207 99.72% 361 / 362 — 99.38% 962 / 968 98.51% 66 / 67
FirefoxFirefox
 96.04% 9,190 / 9,569 100.0% 1,267 / 1,267 — 0.0% 0 / 31 98.66% 1,325 / 1,343

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,873 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,728 / 121,758 99.89% 15,900 / 15,917 — 99.99% 53,831 / 53,838 99.03% 6,458 / 6,521
SafariSafari
 — 99.92% 7,292 / 7,298 99.98% 25,743 / 25,747 — —
EdgeEdge
 100.0% 27,167 / 27,167 100.0% 315 / 315 — 100.0% 895 / 895 98.44% 63 / 64
FirefoxFirefox
 100.0% 7,789 / 7,789 100.0% 1,048 / 1,048 — 0.0% 0 / 23 99.27% 1,090 / 1,098