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Codec: avc1.4d1033

98.87% Encoder Support
62,311 of 63,020 sessions supported encoding
99.94% Decoder Support
11,975 of 11,982 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 5.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,020 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.23% 27,531 / 27,744 99.93% 4,398 / 4,401 — 97.25% 11,901 / 12,238 98.56% 1,575 / 1,598
SafariSafari
 — 100.0% 1,642 / 1,642 100.0% 6,975 / 6,975 — —
EdgeEdge
 99.88% 4,946 / 4,952 100.0% 60 / 60 — 96.77% 120 / 124 —
FirefoxFirefox
 95.26% 2,131 / 2,237 100.0% 264 / 264 — 0.0% 0 / 10 99.31% 287 / 289

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,982 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 100.0% 5,241 / 5,241 99.85% 650 / 651 — 100.0% 2,273 / 2,273 99.27% 410 / 413
SafariSafari
 — 100.0% 281 / 281 100.0% 1,421 / 1,421 — —
EdgeEdge
 100.0% 1,021 / 1,021 — — 100.0% 40 / 40 —
FirefoxFirefox
 100.0% 443 / 443 100.0% 47 / 47 — — 100.0% 60 / 60