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Codec: avc1.640c33

98.72% Encoder Support
316,478 of 320,577 sessions supported encoding
99.94% Decoder Support
269,187 of 269,358 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 320,577 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.27% 143,178 / 144,228 99.87% 19,888 / 19,913 — 96.4% 61,214 / 63,502 97.44% 7,508 / 7,705
SafariSafari
 — 99.94% 8,594 / 8,599 100.0% 31,056 / 31,057 — —
EdgeEdge
 99.81% 30,995 / 31,054 100.0% 388 / 388 — 97.99% 927 / 946 97.1% 67 / 69
FirefoxFirefox
 96.14% 9,266 / 9,638 100.0% 1,354 / 1,354 — 0.0% 0 / 34 98.59% 1,259 / 1,277

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,358 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,528 / 121,564 99.88% 16,161 / 16,180 — 99.99% 53,645 / 53,651 99.04% 6,428 / 6,490
SafariSafari
 — 99.93% 7,214 / 7,219 100.0% 25,488 / 25,489 — —
EdgeEdge
 100.0% 27,044 / 27,044 100.0% 333 / 333 — 100.0% 879 / 879 98.41% 62 / 63
FirefoxFirefox
 99.99% 7,861 / 7,862 100.0% 1,112 / 1,112 — 0.0% 0 / 24 99.34% 1,048 / 1,055