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Codec: avc1.420032

99.69% Encoder Support
320,479 of 321,460 sessions supported encoding
99.94% Decoder Support
269,996 of 270,170 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 321,460 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 144,271 / 144,518 99.92% 19,626 / 19,641 — 99.75% 63,808 / 63,966 98.93% 7,781 / 7,865
SafariSafari
 — 99.9% 8,652 / 8,661 99.98% 31,252 / 31,257 — —
EdgeEdge
 99.99% 31,103 / 31,106 100.0% 379 / 379 — 99.78% 909 / 911 100.0% 55 / 55
FirefoxFirefox
 96.03% 9,287 / 9,671 100.0% 1,322 / 1,322 — 0.0% 0 / 40 98.99% 1,278 / 1,291

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,170 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,957 / 121,989 99.91% 15,927 / 15,941 — 99.99% 53,953 / 53,958 99.14% 6,543 / 6,600
SafariSafari
 — 99.89% 7,283 / 7,291 99.98% 25,645 / 25,650 — —
EdgeEdge
 99.99% 27,078 / 27,080 100.0% 343 / 343 — 100.0% 841 / 841 100.0% 52 / 52
FirefoxFirefox
 100.0% 7,849 / 7,849 100.0% 1,106 / 1,106 — 0.0% 0 / 31 99.62% 1,054 / 1,058