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Codec: avc1.420c2a

85.33% Encoder Support
53,949 of 63,221 sessions supported encoding
99.93% Decoder Support
12,042 of 12,050 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 63,221 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.74% 27,652 / 27,723 100.0% 4,391 / 4,391 — 99.75% 12,163 / 12,193 99.0% 1,585 / 1,601
SafariSafari
 — 2.34% 39 / 1,670 1.33% 94 / 7,047 — —
EdgeEdge
 99.98% 5,074 / 5,075 98.11% 52 / 53 — 100.0% 106 / 106 —
FirefoxFirefox
 95.57% 2,135 / 2,234 100.0% 307 / 307 — — 99.33% 296 / 298

VideoDecoder Support Matrix

Browser × Platform decoder support from 12,050 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 100.0% 5,253 / 5,253 100.0% 708 / 708 — 100.0% 2,239 / 2,239 99.0% 395 / 399
SafariSafari
 — 100.0% 309 / 309 100.0% 1,417 / 1,417 — —
EdgeEdge
 100.0% 1,062 / 1,062 — — 100.0% 30 / 30 —
FirefoxFirefox
 100.0% 427 / 427 100.0% 52 / 52 — — 100.0% 64 / 64