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Codec: avc1.420c34

87.37% Encoder Support
279,648 of 320,091 sessions supported encoding
99.93% Decoder Support
268,883 of 269,073 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.2
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,091 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,953 / 144,206 99.88% 19,588 / 19,611 — 99.77% 63,474 / 63,621 98.86% 7,811 / 7,901
SafariSafari
 — 1.95% 166 / 8,517 1.46% 450 / 30,898 — —
EdgeEdge
 100.0% 30,888 / 30,889 100.0% 376 / 376 — 99.59% 972 / 976 96.67% 58 / 60
FirefoxFirefox
 96.11% 9,195 / 9,567 100.0% 1,315 / 1,315 — 0.0% 0 / 34 98.65% 1,314 / 1,332

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,073 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,614 / 121,648 99.84% 15,948 / 15,973 — 99.98% 53,742 / 53,751 98.99% 6,579 / 6,646
SafariSafari
 — 99.94% 7,122 / 7,126 99.98% 25,331 / 25,335 — —
EdgeEdge
 100.0% 26,898 / 26,898 100.0% 332 / 332 — 100.0% 907 / 907 96.43% 54 / 56
FirefoxFirefox
 100.0% 7,795 / 7,795 100.0% 1,068 / 1,068 — 0.0% 0 / 25 99.46% 1,101 / 1,107