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Codec: avc1.420033

99.7% Encoder Support
318,933 of 319,883 sessions supported encoding
99.94% Decoder Support
268,599 of 268,770 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 319,883 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.84% 143,627 / 143,852 99.92% 19,632 / 19,647 — 99.79% 63,462 / 63,594 98.71% 7,581 / 7,680
SafariSafari
 — 99.92% 8,457 / 8,464 99.98% 31,137 / 31,143 — —
EdgeEdge
 100.0% 30,896 / 30,897 100.0% 361 / 361 — 99.58% 954 / 958 97.47% 77 / 79
FirefoxFirefox
 95.87% 9,352 / 9,755 100.0% 1,298 / 1,298 — 0.0% 0 / 34 99.17% 1,322 / 1,333

VideoDecoder Support Matrix

Browser × Platform decoder support from 268,770 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,498 / 121,528 99.91% 15,946 / 15,960 — 99.99% 53,520 / 53,527 98.96% 6,442 / 6,510
SafariSafari
 — 99.9% 7,078 / 7,085 99.98% 25,531 / 25,537 — —
EdgeEdge
 100.0% 26,861 / 26,861 100.0% 323 / 323 — 100.0% 871 / 871 98.57% 69 / 70
FirefoxFirefox
 100.0% 7,913 / 7,913 100.0% 1,085 / 1,085 — 0.0% 0 / 21 99.27% 1,089 / 1,097