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Codec: avc1.420820

87.25% Encoder Support
280,065 of 320,982 sessions supported encoding
99.94% Decoder Support
269,495 of 269,667 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 320,982 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.84% 144,267 / 144,493 99.92% 19,544 / 19,560 — 99.78% 63,586 / 63,728 99.0% 7,721 / 7,799
SafariSafari
 — 2.07% 178 / 8,602 1.46% 457 / 31,335 — —
EdgeEdge
 100.0% 30,763 / 30,764 100.0% 370 / 370 — 99.81% 1,024 / 1,026 100.0% 65 / 65
FirefoxFirefox
 96.22% 9,383 / 9,752 100.0% 1,290 / 1,290 — 0.0% 0 / 38 99.17% 1,315 / 1,326

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,667 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,916 / 121,949 99.91% 15,816 / 15,831 — 99.99% 53,650 / 53,654 99.1% 6,514 / 6,573
SafariSafari
 — 99.92% 7,252 / 7,258 99.98% 25,717 / 25,721 — —
EdgeEdge
 100.0% 26,798 / 26,799 100.0% 321 / 321 — 100.0% 954 / 954 100.0% 59 / 59
FirefoxFirefox
 100.0% 7,963 / 7,963 100.0% 1,064 / 1,064 — 0.0% 0 / 26 99.45% 1,085 / 1,091