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Codec: avc1.421020

99.63% Encoder Support
2,140,032 of 2,147,946 sessions supported encoding
99.8% Decoder Support
2,092,922 of 2,097,098 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,147,946 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 866,293 / 866,925 99.8% 100,136 / 100,332 — 99.51% 647,178 / 650,393 97.91% 42,853 / 43,767
SafariSafari
 — 99.76% 48,237 / 48,353 99.98% 218,039 / 218,086 — —
EdgeEdge
 99.99% 143,209 / 143,221 100.0% 1,519 / 1,519 — 99.93% 4,290 / 4,293 99.0% 690 / 697
FirefoxFirefox
 95.91% 51,142 / 53,325 99.96% 7,359 / 7,362 — 1.94% 2 / 103 98.92% 6,018 / 6,084

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,098 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,406 / 844,606 99.8% 96,420 / 96,617 — 99.65% 638,078 / 640,334 98.24% 41,813 / 42,564
SafariSafari
 — 99.83% 46,867 / 46,946 99.98% 212,641 / 212,688 — —
EdgeEdge
 99.99% 139,288 / 139,300 100.0% 1,474 / 1,474 — 100.0% 4,213 / 4,213 99.13% 686 / 692
FirefoxFirefox
 99.97% 51,509 / 51,524 99.94% 7,139 / 7,143 — 2.22% 2 / 90 98.15% 5,726 / 5,834