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Codec: avc1.421020

99.59% Encoder Support
62,308 of 62,563 sessions supported encoding
99.92% Decoder Support
11,722 of 11,731 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,563 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.72% 27,388 / 27,465 99.98% 4,402 / 4,403 — 99.73% 12,248 / 12,281 99.08% 1,622 / 1,637
SafariSafari
 — 100.0% 1,667 / 1,667 100.0% 6,728 / 6,728 — —
EdgeEdge
 100.0% 4,913 / 4,913 100.0% 56 / 56 — 100.0% 112 / 112 —
FirefoxFirefox
 95.04% 2,107 / 2,217 100.0% 271 / 271 — 0.0% 0 / 14 99.33% 296 / 298

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,731 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.94% 5,144 / 5,147 99.85% 687 / 688 — 100.0% 2,222 / 2,222 99.08% 430 / 434
SafariSafari
 — 100.0% 264 / 264 100.0% 1,341 / 1,341 — —
EdgeEdge
 100.0% 992 / 992 100.0% 11 / 11 — 100.0% 32 / 32 —
FirefoxFirefox
 100.0% 416 / 416 100.0% 52 / 52 — — 100.0% 48 / 48