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Codec: avc1.420434

87.2% Encoder Support
279,820 of 320,890 sessions supported encoding
99.93% Decoder Support
269,987 of 270,163 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 320,890 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,427 / 143,681 99.9% 19,805 / 19,825 — 99.79% 63,630 / 63,763 98.97% 7,775 / 7,856
SafariSafari
 — 1.97% 169 / 8,571 1.45% 457 / 31,542 — —
EdgeEdge
 100.0% 30,955 / 30,956 100.0% 396 / 396 — 99.52% 1,033 / 1,038 100.0% 60 / 60
FirefoxFirefox
 96.25% 9,433 / 9,801 100.0% 1,309 / 1,309 — 0.0% 0 / 42 98.36% 1,260 / 1,281

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,163 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,316 / 121,350 99.89% 16,207 / 16,225 — 99.99% 53,948 / 53,954 99.21% 6,519 / 6,571
SafariSafari
 — 99.93% 7,215 / 7,220 99.98% 25,923 / 25,928 — —
EdgeEdge
 100.0% 27,010 / 27,011 100.0% 357 / 357 — 100.0% 947 / 947 100.0% 53 / 53
FirefoxFirefox
 99.99% 8,002 / 8,003 100.0% 1,081 / 1,081 — 0.0% 0 / 33 99.14% 1,041 / 1,050