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Codec: avc1.640433

86.3% Encoder Support
276,530 of 320,434 sessions supported encoding
99.93% Decoder Support
269,153 of 269,330 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 320,434 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.26% 143,361 / 144,435 99.82% 19,483 / 19,519 — 96.29% 60,898 / 63,246 97.13% 7,414 / 7,633
SafariSafari
 — 1.91% 162 / 8,486 1.48% 462 / 31,113 — —
EdgeEdge
 99.8% 31,328 / 31,391 100.0% 386 / 386 — 98.16% 958 / 976 98.25% 56 / 57
FirefoxFirefox
 96.02% 9,290 / 9,675 100.0% 1,328 / 1,328 — 0.0% 0 / 25 98.72% 1,308 / 1,325

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,330 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,941 / 121,970 99.84% 15,751 / 15,776 — 99.99% 53,254 / 53,257 98.89% 6,395 / 6,467
SafariSafari
 — 99.9% 7,114 / 7,121 99.99% 25,529 / 25,532 — —
EdgeEdge
 100.0% 27,380 / 27,381 100.0% 341 / 341 — 100.0% 894 / 894 98.08% 51 / 52
FirefoxFirefox
 100.0% 7,919 / 7,919 100.0% 1,108 / 1,108 — 0.0% 0 / 18 99.27% 1,087 / 1,095