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Codec: avc1.420432

87.36% Encoder Support
1,876,812 of 2,148,454 sessions supported encoding
99.8% Decoder Support
2,093,493 of 2,097,631 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5
Maximum Resolution 4K (4096×2176)
Maximum Bitrate 135 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,148,454 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 868,162 / 868,770 99.81% 100,300 / 100,489 — 99.51% 645,735 / 648,915 98.08% 42,762 / 43,598
SafariSafari
 — 1.52% 737 / 48,370 1.87% 4,064 / 217,837 — —
EdgeEdge
 99.99% 143,627 / 143,640 99.93% 1,434 / 1,435 — 99.78% 4,145 / 4,154 99.1% 659 / 665
FirefoxFirefox
 95.91% 51,288 / 53,474 100.0% 7,342 / 7,342 — 0.0% 0 / 114 98.47% 6,119 / 6,214

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,631 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,993 / 846,197 99.8% 96,658 / 96,848 — 99.65% 636,844 / 639,084 98.38% 41,740 / 42,427
SafariSafari
 — 99.8% 46,960 / 47,056 99.97% 212,179 / 212,242 — —
EdgeEdge
 99.99% 139,657 / 139,669 100.0% 1,392 / 1,392 — 100.0% 4,079 / 4,079 99.09% 650 / 656
FirefoxFirefox
 99.97% 51,757 / 51,775 99.97% 7,082 / 7,084 — 0.0% 0 / 105 98.29% 5,874 / 5,976