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Codec: avc1.421429

85.4% Encoder Support
53,877 of 63,090 sessions supported encoding
99.96% Decoder Support
11,921 of 11,926 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 63,090 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.81% 27,648 / 27,700 100.0% 4,420 / 4,420 — 99.7% 12,141 / 12,178 98.94% 1,589 / 1,606
SafariSafari
 — 1.98% 32 / 1,613 1.46% 103 / 7,066 — —
EdgeEdge
 100.0% 5,068 / 5,068 97.96% 48 / 49 — 100.0% 107 / 107 90.91% 10 / 11
FirefoxFirefox
 96.35% 2,111 / 2,191 100.0% 281 / 281 — — 98.96% 286 / 289

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,926 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,194 / 5,195 100.0% 713 / 713 — 100.0% 2,271 / 2,271 99.21% 378 / 381
SafariSafari
 — 100.0% 248 / 248 100.0% 1,436 / 1,436 — —
EdgeEdge
 100.0% 1,048 / 1,048 — — 100.0% 27 / 27 —
FirefoxFirefox
 100.0% 411 / 411 100.0% 42 / 42 — — 100.0% 62 / 62