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Codec: avc1.420c1f

87.35% Encoder Support
1,877,274 of 2,149,075 sessions supported encoding
99.8% Decoder Support
2,093,752 of 2,097,879 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3.1
Maximum Resolution HD ready (1024×960)
Maximum Bitrate 14 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,075 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 867,118 / 867,734 99.81% 100,680 / 100,871 — 99.5% 646,595 / 649,825 98.02% 43,054 / 43,925
SafariSafari
 — 1.46% 697 / 47,836 1.85% 4,046 / 218,404 — —
EdgeEdge
 99.99% 143,688 / 143,696 100.0% 1,457 / 1,457 — 99.93% 4,216 / 4,219 99.12% 679 / 685
FirefoxFirefox
 95.86% 51,375 / 53,593 99.97% 7,306 / 7,308 — 0.9% 1 / 111 98.77% 5,884 / 5,957

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,879 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,776 / 844,960 99.8% 97,015 / 97,206 — 99.65% 637,759 / 640,016 98.31% 41,948 / 42,667
SafariSafari
 — 99.83% 46,420 / 46,500 99.98% 212,787 / 212,839 — —
EdgeEdge
 99.99% 139,730 / 139,738 100.0% 1,414 / 1,414 — 100.0% 4,135 / 4,135 99.41% 676 / 680
FirefoxFirefox
 99.97% 51,784 / 51,801 99.96% 7,063 / 7,066 — 0.95% 1 / 105 98.23% 5,618 / 5,719