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Codec: avc1.420c20

87.24% Encoder Support
279,594 of 320,474 sessions supported encoding
99.94% Decoder Support
269,007 of 269,181 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,474 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,817 / 144,070 99.92% 19,644 / 19,660 — 99.76% 63,532 / 63,686 98.95% 7,726 / 7,808
SafariSafari
 — 2.05% 174 / 8,488 1.49% 468 / 31,377 — —
EdgeEdge
 99.99% 30,903 / 30,905 99.72% 358 / 359 — 99.79% 949 / 951 96.61% 57 / 59
FirefoxFirefox
 96.15% 9,221 / 9,590 100.0% 1,331 / 1,331 — 0.0% 0 / 25 98.78% 1,297 / 1,313

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,181 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,487 / 121,519 99.9% 15,984 / 16,000 — 99.98% 53,766 / 53,775 98.99% 6,541 / 6,608
SafariSafari
 — 99.89% 7,071 / 7,079 99.98% 25,585 / 25,589 — —
EdgeEdge
 99.99% 26,943 / 26,945 100.0% 319 / 319 — 100.0% 872 / 872 98.15% 53 / 54
FirefoxFirefox
 99.99% 7,807 / 7,808 100.0% 1,107 / 1,107 — 0.0% 0 / 18 99.63% 1,065 / 1,069