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Codec: avc1.420833

87.35% Encoder Support
1,875,341 of 2,146,883 sessions supported encoding
99.8% Decoder Support
2,091,570 of 2,095,665 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 2,146,883 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.92% 865,781 / 866,435 99.81% 100,482 / 100,674 — 99.51% 646,227 / 649,428 97.99% 42,817 / 43,696
SafariSafari
 — 1.59% 765 / 48,118 1.86% 4,045 / 217,875 — —
EdgeEdge
 100.0% 143,735 / 143,742 99.93% 1,482 / 1,483 — 99.84% 4,264 / 4,271 98.97% 673 / 680
FirefoxFirefox
 95.87% 51,199 / 53,403 99.95% 7,374 / 7,378 — 0.0% 0 / 107 98.64% 6,023 / 6,106

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,095,665 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 843,684 / 843,880 99.8% 96,776 / 96,971 — 99.65% 637,250 / 639,481 98.29% 41,737 / 42,463
SafariSafari
 — 99.82% 46,644 / 46,729 99.98% 212,230 / 212,282 — —
EdgeEdge
 99.99% 139,699 / 139,706 100.0% 1,442 / 1,442 — 100.0% 4,195 / 4,195 99.11% 667 / 673
FirefoxFirefox
 99.96% 51,604 / 51,624 99.93% 7,148 / 7,153 — 0.0% 0 / 94 98.44% 5,787 / 5,879