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Codec: avc1.4d0c33

86.46% Encoder Support
277,132 of 320,539 sessions supported encoding
99.94% Decoder Support
269,281 of 269,450 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 320,539 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.27% 143,086 / 144,131 99.87% 19,517 / 19,543 — 97.54% 61,992 / 63,553 98.06% 7,546 / 7,695
SafariSafari
 — 2.0% 174 / 8,720 1.54% 484 / 31,365 — —
EdgeEdge
 99.78% 30,959 / 31,028 100.0% 359 / 359 — 98.96% 947 / 957 100.0% 68 / 68
FirefoxFirefox
 96.33% 9,341 / 9,697 100.0% 1,311 / 1,311 — 0.0% 0 / 27 99.21% 1,256 / 1,266

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,450 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,707 / 121,742 99.89% 15,862 / 15,879 — 99.99% 53,648 / 53,654 99.12% 6,441 / 6,498
SafariSafari
 — 99.92% 7,320 / 7,326 99.97% 25,681 / 25,688 — —
EdgeEdge
 100.0% 26,974 / 26,974 100.0% 329 / 329 — 100.0% 884 / 884 100.0% 62 / 62
FirefoxFirefox
 99.97% 7,870 / 7,872 100.0% 1,085 / 1,085 — 0.0% 0 / 18 99.52% 1,031 / 1,036