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Codec: avc1.420c16

87.31% Encoder Support
279,567 of 320,183 sessions supported encoding
99.93% Decoder Support
269,078 of 269,272 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 2.2
Maximum Resolution SD/DVD (720×480)
Maximum Bitrate 4 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,183 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,543 / 143,805 99.9% 19,475 / 19,495 — 99.79% 63,864 / 63,998 98.83% 7,623 / 7,713
SafariSafari
 — 2.21% 192 / 8,685 1.41% 437 / 30,979 — —
EdgeEdge
 100.0% 30,901 / 30,902 99.72% 355 / 356 — 99.59% 974 / 978 98.36% 60 / 61
FirefoxFirefox
 96.39% 9,394 / 9,746 100.0% 1,360 / 1,360 — 0.0% 0 / 37 98.99% 1,269 / 1,282

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,272 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,417 / 121,456 99.88% 15,892 / 15,911 — 99.98% 53,930 / 53,942 98.98% 6,428 / 6,494
SafariSafari
 — 99.92% 7,278 / 7,284 99.98% 25,455 / 25,459 — —
EdgeEdge
 100.0% 26,911 / 26,912 100.0% 310 / 310 — 100.0% 915 / 915 100.0% 50 / 50
FirefoxFirefox
 100.0% 7,989 / 7,989 100.0% 1,080 / 1,080 — 0.0% 0 / 29 99.62% 1,046 / 1,050