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Codec: avc1.420834

87.32% Encoder Support
279,230 of 319,795 sessions supported encoding
99.93% Decoder Support
268,616 of 268,793 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 319,795 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.82% 143,788 / 144,043 99.9% 19,625 / 19,645 — 99.75% 63,196 / 63,355 98.93% 7,699 / 7,782
SafariSafari
 — 1.92% 165 / 8,572 1.45% 450 / 30,985 — —
EdgeEdge
 100.0% 30,878 / 30,878 100.0% 361 / 361 — 99.69% 955 / 958 98.25% 56 / 57
FirefoxFirefox
 96.2% 9,357 / 9,727 100.0% 1,368 / 1,368 — 0.0% 0 / 27 98.56% 1,230 / 1,248

VideoDecoder Support Matrix

Browser × Platform decoder support from 268,793 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 121,478 / 121,521 99.88% 15,988 / 16,007 — 99.99% 53,404 / 53,407 99.13% 6,478 / 6,535
SafariSafari
 — 99.9% 7,213 / 7,220 99.99% 25,406 / 25,408 — —
EdgeEdge
 100.0% 26,889 / 26,889 100.0% 319 / 319 — 100.0% 882 / 882 100.0% 53 / 53
FirefoxFirefox
 99.99% 7,972 / 7,973 100.0% 1,135 / 1,135 — 0.0% 0 / 22 99.03% 1,025 / 1,035