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Codec: avc1.4d1033

98.72% Encoder Support
2,120,652 of 2,148,229 sessions supported encoding
99.8% Decoder Support
2,093,044 of 2,097,174 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 2,148,229 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.39% 862,273 / 867,558 99.74% 100,173 / 100,433 — 97.34% 632,486 / 649,764 96.66% 41,989 / 43,440
SafariSafari
 — 99.76% 48,163 / 48,279 99.98% 218,052 / 218,096 — —
EdgeEdge
 99.85% 143,608 / 143,827 100.0% 1,463 / 1,463 — 99.35% 4,152 / 4,179 98.9% 631 / 638
FirefoxFirefox
 95.94% 51,429 / 53,605 99.99% 7,491 / 7,492 — 0.0% 0 / 106 98.83% 5,850 / 5,919

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,174 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,858 / 845,055 99.79% 96,477 / 96,683 — 99.65% 637,575 / 639,799 98.23% 41,506 / 42,255
SafariSafari
 — 99.83% 46,835 / 46,913 99.98% 212,485 / 212,530 — —
EdgeEdge
 99.99% 139,888 / 139,896 100.0% 1,411 / 1,411 — 100.0% 4,095 / 4,095 99.21% 628 / 633
FirefoxFirefox
 99.97% 51,794 / 51,811 99.97% 7,273 / 7,275 — 0.0% 0 / 98 98.54% 5,607 / 5,690