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Codec: avc1.421434

87.32% Encoder Support
1,877,440 of 2,149,977 sessions supported encoding
99.8% Decoder Support
2,095,072 of 2,099,182 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 2,149,977 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 867,685 / 868,314 99.8% 99,688 / 99,889 — 99.51% 646,904 / 650,087 98.06% 43,110 / 43,962
SafariSafari
 — 1.45% 700 / 48,343 1.83% 4,006 / 218,669 — —
EdgeEdge
 99.99% 143,851 / 143,861 100.0% 1,438 / 1,438 — 99.76% 4,131 / 4,141 99.0% 696 / 703
FirefoxFirefox
 95.94% 51,441 / 53,620 99.96% 7,384 / 7,387 — 0.83% 1 / 120 99.03% 5,922 / 5,980

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,099,182 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,905 / 846,102 99.79% 96,075 / 96,273 — 99.65% 637,919 / 640,146 98.33% 42,029 / 42,744
SafariSafari
 — 99.84% 46,832 / 46,905 99.98% 212,997 / 213,041 — —
EdgeEdge
 99.99% 139,912 / 139,922 100.0% 1,388 / 1,388 — 100.0% 4,065 / 4,065 99.14% 691 / 697
FirefoxFirefox
 99.97% 51,806 / 51,822 99.94% 7,162 / 7,166 — 0.87% 1 / 115 98.26% 5,645 / 5,745