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Codec: avc1.420434

85.29% Encoder Support
53,427 of 62,638 sessions supported encoding
99.93% Decoder Support
11,928 of 11,936 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,638 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.75% 27,467 / 27,536 99.93% 4,269 / 4,272 — 99.76% 12,069 / 12,098 98.62% 1,644 / 1,667
SafariSafari
 — 2.44% 40 / 1,639 1.72% 122 / 7,078 — —
EdgeEdge
 100.0% 4,949 / 4,949 100.0% 46 / 46 — 100.0% 118 / 118 —
FirefoxFirefox
 95.58% 2,100 / 2,197 100.0% 271 / 271 — 0.0% 0 / 12 99.31% 286 / 288

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,936 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,206 / 5,207 99.85% 671 / 672 — 100.0% 2,289 / 2,289 99.21% 379 / 382
SafariSafari
 — 100.0% 295 / 295 100.0% 1,480 / 1,480 — —
EdgeEdge
 100.0% 1,004 / 1,004 — — 100.0% 27 / 27 —
FirefoxFirefox
 100.0% 399 / 399 100.0% 43 / 43 — — 100.0% 57 / 57