← Back to Codec Support Table

Codec: avc1.420029

99.63% Encoder Support
2,140,084 of 2,147,971 sessions supported encoding
99.8% Decoder Support
2,092,503 of 2,096,645 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4.1
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,147,971 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 866,597 / 867,211 99.81% 100,015 / 100,206 — 99.49% 647,092 / 650,386 98.05% 42,839 / 43,692
SafariSafari
 — 99.77% 47,963 / 48,073 99.98% 217,731 / 217,784 — —
EdgeEdge
 99.99% 143,614 / 143,624 100.0% 1,479 / 1,479 — 99.88% 4,295 / 4,300 98.97% 670 / 677
FirefoxFirefox
 95.93% 51,327 / 53,506 99.96% 7,512 / 7,515 — 0.91% 1 / 110 98.94% 5,901 / 5,964

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,645 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,383 / 844,562 99.8% 96,367 / 96,560 — 99.64% 638,198 / 640,500 98.32% 41,752 / 42,464
SafariSafari
 — 99.85% 46,619 / 46,688 99.97% 212,082 / 212,136 — —
EdgeEdge
 99.99% 139,518 / 139,528 100.0% 1,445 / 1,445 — 100.0% 4,230 / 4,230 99.25% 662 / 667
FirefoxFirefox
 99.96% 51,694 / 51,717 99.93% 7,281 / 7,286 — 0.99% 1 / 101 98.22% 5,620 / 5,722