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Codec: avc1.640434

86.21% Encoder Support
276,216 of 320,410 sessions supported encoding
99.93% Decoder Support
269,399 of 269,595 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile High
Level 5.2
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,410 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.28% 142,904 / 143,940 99.83% 19,566 / 19,599 — 96.21% 61,400 / 63,820 97.26% 7,479 / 7,690
SafariSafari
 — 2.37% 206 / 8,684 1.39% 433 / 31,188 — —
EdgeEdge
 99.84% 30,930 / 30,980 100.0% 356 / 356 — 98.64% 945 / 958 100.0% 54 / 54
FirefoxFirefox
 95.86% 9,306 / 9,708 100.0% 1,300 / 1,300 — 0.0% 0 / 40 98.19% 1,248 / 1,271

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,595 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,680 / 121,721 99.89% 15,943 / 15,960 — 99.99% 53,806 / 53,814 98.99% 6,448 / 6,514
SafariSafari
 — 99.92% 7,264 / 7,270 99.98% 25,569 / 25,574 — —
EdgeEdge
 99.99% 27,066 / 27,068 100.0% 323 / 323 — 100.0% 884 / 884 100.0% 49 / 49
FirefoxFirefox
 100.0% 7,867 / 7,867 100.0% 1,074 / 1,074 — 0.0% 0 / 26 98.95% 1,034 / 1,045