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Codec: avc1.420828

87.33% Encoder Support
1,875,744 of 2,147,928 sessions supported encoding
99.8% Decoder Support
2,092,941 of 2,097,089 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 2,147,928 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 866,521 / 867,137 99.82% 100,415 / 100,601 — 99.49% 646,264 / 649,547 97.98% 42,919 / 43,806
SafariSafari
 — 1.61% 776 / 48,331 1.88% 4,110 / 218,534 — —
EdgeEdge
 99.99% 143,435 / 143,443 100.0% 1,462 / 1,462 — 99.83% 4,232 / 4,239 98.57% 688 / 698
FirefoxFirefox
 95.93% 51,052 / 53,218 99.97% 7,511 / 7,513 — 0.0% 0 / 116 98.98% 5,906 / 5,967

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,089 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,578 / 844,787 99.81% 96,766 / 96,947 — 99.64% 637,327 / 639,633 98.3% 41,900 / 42,623
SafariSafari
 — 99.85% 46,821 / 46,891 99.98% 212,869 / 212,922 — —
EdgeEdge
 99.99% 139,473 / 139,481 100.0% 1,415 / 1,415 — 100.0% 4,162 / 4,162 98.7% 684 / 693
FirefoxFirefox
 99.97% 51,458 / 51,474 99.97% 7,285 / 7,287 — 0.0% 0 / 107 98.33% 5,654 / 5,750