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Codec: avc1.640c33

98.64% Encoder Support
62,319 of 63,179 sessions supported encoding
99.94% Decoder Support
11,976 of 11,983 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,179 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.2% 27,683 / 27,907 99.93% 4,401 / 4,404 — 96.35% 11,706 / 12,150 97.43% 1,553 / 1,594
SafariSafari
 — 100.0% 1,643 / 1,643 100.0% 6,999 / 6,999 — —
EdgeEdge
 99.76% 5,004 / 5,016 100.0% 60 / 60 — 98.02% 99 / 101 91.67% 11 / 12
FirefoxFirefox
 94.84% 2,077 / 2,190 100.0% 294 / 294 — 0.0% 0 / 12 99.3% 285 / 287

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,983 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 100.0% 5,246 / 5,246 99.85% 670 / 671 — 100.0% 2,299 / 2,299 99.21% 376 / 379
SafariSafari
 — 100.0% 268 / 268 100.0% 1,446 / 1,446 — —
EdgeEdge
 100.0% 1,006 / 1,006 — — 100.0% 34 / 34 —
FirefoxFirefox
 100.0% 414 / 414 100.0% 52 / 52 — — 100.0% 65 / 65