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Codec: avc1.420432

87.28% Encoder Support
278,619 of 319,213 sessions supported encoding
99.93% Decoder Support
268,199 of 268,390 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5
Maximum Resolution 4K (4096×2176)
Maximum Bitrate 135 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 319,213 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.84% 143,830 / 144,061 99.91% 19,654 / 19,672 — 99.78% 62,774 / 62,911 98.99% 7,568 / 7,645
SafariSafari
 — 2.02% 172 / 8,502 1.53% 477 / 31,147 — —
EdgeEdge
 99.99% 30,840 / 30,842 99.72% 357 / 358 — 99.58% 945 / 949 100.0% 64 / 64
FirefoxFirefox
 96.2% 9,207 / 9,571 100.0% 1,326 / 1,326 — 0.0% 0 / 31 98.94% 1,311 / 1,325

VideoDecoder Support Matrix

Browser × Platform decoder support from 268,390 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,450 / 121,488 99.88% 16,012 / 16,031 — 99.99% 53,073 / 53,080 99.09% 6,415 / 6,474
SafariSafari
 — 99.81% 7,174 / 7,188 99.98% 25,547 / 25,552 — —
EdgeEdge
 100.0% 26,870 / 26,871 100.0% 315 / 315 — 100.0% 874 / 874 100.0% 55 / 55
FirefoxFirefox
 100.0% 7,872 / 7,872 100.0% 1,068 / 1,068 — 0.0% 0 / 22 99.17% 1,078 / 1,087