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Codec: avc1.420833

87.36% Encoder Support
279,918 of 320,419 sessions supported encoding
99.94% Decoder Support
269,030 of 269,201 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,419 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.81% 143,830 / 144,099 99.92% 19,784 / 19,800 — 99.75% 63,534 / 63,695 99.0% 7,689 / 7,767
SafariSafari
 — 1.89% 161 / 8,507 1.51% 467 / 30,976 — —
EdgeEdge
 100.0% 31,109 / 31,109 100.0% 369 / 369 — 99.68% 945 / 948 96.15% 50 / 52
FirefoxFirefox
 96.07% 9,283 / 9,663 100.0% 1,270 / 1,270 — 0.0% 0 / 36 98.67% 1,331 / 1,349

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,201 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 121,497 / 121,544 99.91% 16,083 / 16,097 — 99.99% 53,744 / 53,748 99.13% 6,477 / 6,534
SafariSafari
 — 99.96% 7,115 / 7,118 99.99% 25,381 / 25,383 — —
EdgeEdge
 100.0% 27,073 / 27,073 100.0% 328 / 328 — 100.0% 872 / 872 97.78% 44 / 45
FirefoxFirefox
 100.0% 7,884 / 7,884 100.0% 1,045 / 1,045 — 0.0% 0 / 23 99.38% 1,115 / 1,122