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Codec: avc1.420034

99.64% Encoder Support
2,141,454 of 2,149,125 sessions supported encoding
99.81% Decoder Support
2,093,911 of 2,097,898 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 2,149,125 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 867,727 / 868,340 99.81% 99,944 / 100,134 — 99.52% 647,532 / 650,664 98.1% 42,753 / 43,581
SafariSafari
 — 99.76% 48,166 / 48,280 99.98% 217,704 / 217,750 — —
EdgeEdge
 100.0% 143,705 / 143,710 100.0% 1,444 / 1,444 — 99.79% 4,252 / 4,261 99.02% 706 / 713
FirefoxFirefox
 96.02% 51,227 / 53,348 99.95% 7,333 / 7,337 — 0.0% 0 / 111 98.9% 5,871 / 5,936

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,898 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,516 / 845,701 99.81% 96,311 / 96,497 — 99.66% 638,573 / 640,737 98.35% 41,715 / 42,417
SafariSafari
 — 99.84% 46,852 / 46,928 99.98% 212,071 / 212,117 — —
EdgeEdge
 100.0% 139,631 / 139,636 100.0% 1,411 / 1,411 — 100.0% 4,179 / 4,179 99.01% 701 / 708
FirefoxFirefox
 99.97% 51,569 / 51,582 99.92% 7,093 / 7,099 — 0.0% 0 / 106 98.67% 5,631 / 5,707