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Codec: avc1.420c28

87.32% Encoder Support
1,877,026 of 2,149,717 sessions supported encoding
99.8% Decoder Support
2,094,676 of 2,098,808 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,717 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 867,347 / 867,974 99.81% 100,420 / 100,613 — 99.51% 646,679 / 649,852 98.08% 42,788 / 43,624
SafariSafari
 — 1.54% 743 / 48,116 1.82% 3,991 / 218,991 — —
EdgeEdge
 100.0% 143,702 / 143,709 100.0% 1,470 / 1,470 — 99.91% 4,218 / 4,222 99.1% 663 / 669
FirefoxFirefox
 95.84% 51,177 / 53,400 99.99% 7,481 / 7,482 — 0.93% 1 / 108 98.43% 5,877 / 5,971

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,808 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 845,280 / 845,499 99.8% 96,706 / 96,904 — 99.65% 637,743 / 639,966 98.27% 41,739 / 42,472
SafariSafari
 — 99.82% 46,678 / 46,760 99.98% 213,371 / 213,416 — —
EdgeEdge
 99.99% 139,739 / 139,746 100.0% 1,434 / 1,434 — 100.0% 4,148 / 4,148 99.55% 659 / 662
FirefoxFirefox
 99.98% 51,593 / 51,605 99.97% 7,247 / 7,249 — 1.0% 1 / 100 98.24% 5,633 / 5,734