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Codec: avc1.640c1f

98.68% Encoder Support
317,045 of 321,286 sessions supported encoding
99.94% Decoder Support
269,907 of 270,075 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile High
Level 3.1
Maximum Resolution HD ready (1024×960)
Maximum Bitrate 14 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 321,286 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.23% 143,445 / 144,557 99.92% 19,430 / 19,446 — 96.28% 61,333 / 63,705 97.62% 7,572 / 7,757
SafariSafari
 — 99.88% 8,633 / 8,643 99.99% 31,416 / 31,419 — —
EdgeEdge
 99.81% 31,188 / 31,248 100.0% 365 / 365 — 98.32% 937 / 953 97.22% 70 / 72
FirefoxFirefox
 96.03% 9,286 / 9,670 100.0% 1,358 / 1,358 — 0.0% 0 / 31 98.57% 1,239 / 1,257

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,075 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,953 / 121,993 99.91% 15,815 / 15,829 — 99.99% 53,873 / 53,878 99.19% 6,507 / 6,560
SafariSafari
 — 99.88% 7,244 / 7,253 99.98% 25,706 / 25,710 — —
EdgeEdge
 100.0% 27,158 / 27,159 100.0% 319 / 319 — 100.0% 867 / 867 98.44% 63 / 64
FirefoxFirefox
 100.0% 7,883 / 7,883 100.0% 1,110 / 1,110 — 0.0% 0 / 21 99.42% 1,025 / 1,031