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Codec: avc1.4d0420

86.56% Encoder Support
276,942 of 319,940 sessions supported encoding
99.93% Decoder Support
268,765 of 268,949 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 3.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 319,940 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.27% 142,267 / 143,311 99.85% 19,631 / 19,661 — 97.6% 62,612 / 64,153 97.96% 7,507 / 7,663
SafariSafari
 — 1.83% 156 / 8,515 1.44% 449 / 31,105 — —
EdgeEdge
 99.82% 30,889 / 30,945 99.73% 366 / 367 — 98.99% 979 / 989 100.0% 58 / 58
FirefoxFirefox
 95.96% 9,328 / 9,721 100.0% 1,341 / 1,341 — 0.0% 0 / 32 98.59% 1,261 / 1,279

VideoDecoder Support Matrix

Browser × Platform decoder support from 268,949 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 120,710 / 120,746 99.87% 15,978 / 15,998 — 99.98% 54,204 / 54,213 99.04% 6,369 / 6,431
SafariSafari
 — 99.94% 7,188 / 7,192 99.98% 25,577 / 25,581 — —
EdgeEdge
 100.0% 27,034 / 27,035 100.0% 319 / 319 — 100.0% 914 / 914 100.0% 53 / 53
FirefoxFirefox
 99.99% 7,921 / 7,922 100.0% 1,105 / 1,105 — 0.0% 0 / 22 99.14% 1,042 / 1,051