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Codec: avc1.420015

15.67% Encoder Support
337,007 of 2,150,144 sessions supported encoding
99.81% Decoder Support
2,094,778 of 2,098,806 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 2.1
Maximum Resolution SD (512×480)
Maximum Bitrate 4 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,150,144 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 255 / 869,071 0.17% 167 / 100,655 — 0.3% 1,917 / 649,697 0.94% 407 / 43,165
SafariSafari
 — 99.71% 47,823 / 47,962 99.96% 218,635 / 218,722 — —
EdgeEdge
 0.03% 42 / 143,557 0.0% 0 / 1,456 — 0.0% 0 / 4,257 0.45% 3 / 661
FirefoxFirefox
 95.84% 51,706 / 53,950 99.85% 7,415 / 7,426 — 0.0% 0 / 101 97.74% 5,974 / 6,112

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,806 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 846,340 / 846,523 99.81% 96,778 / 96,966 — 99.66% 637,504 / 639,711 98.35% 41,296 / 41,989
SafariSafari
 — 99.83% 46,525 / 46,606 99.97% 213,022 / 213,078 — —
EdgeEdge
 100.0% 139,483 / 139,488 100.0% 1,401 / 1,401 — 100.0% 4,173 / 4,173 98.77% 643 / 651
FirefoxFirefox
 99.96% 52,138 / 52,158 99.92% 7,182 / 7,188 — 0.0% 0 / 94 98.65% 5,773 / 5,852