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Codec: avc1.420c28

85.43% Encoder Support
53,682 of 62,837 sessions supported encoding
99.89% Decoder Support
11,933 of 11,946 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,837 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.71% 27,621 / 27,701 99.98% 4,391 / 4,392 — 99.7% 12,114 / 12,150 98.64% 1,524 / 1,545
SafariSafari
 — 2.43% 39 / 1,602 1.76% 123 / 6,993 — —
EdgeEdge
 100.0% 4,977 / 4,977 100.0% 47 / 47 — 100.0% 108 / 108 —
FirefoxFirefox
 95.37% 2,120 / 2,223 100.0% 284 / 284 — — 98.29% 287 / 292

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,946 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,225 / 5,227 99.85% 682 / 683 — 100.0% 2,264 / 2,264 97.96% 385 / 393
SafariSafari
 — 100.0% 251 / 251 100.0% 1,430 / 1,430 — —
EdgeEdge
 100.0% 1,014 / 1,014 100.0% 11 / 11 — 100.0% 34 / 34 —
FirefoxFirefox
 100.0% 428 / 428 100.0% 51 / 51 — — 100.0% 55 / 55