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Codec: avc1.421420

87.31% Encoder Support
280,391 of 321,127 sessions supported encoding
99.94% Decoder Support
269,765 of 269,940 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 321,127 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.84% 144,024 / 144,250 99.9% 19,659 / 19,679 — 99.78% 63,884 / 64,025 98.83% 7,613 / 7,703
SafariSafari
 — 2.03% 172 / 8,470 1.47% 461 / 31,375 — —
EdgeEdge
 100.0% 30,873 / 30,873 99.74% 382 / 383 — 99.51% 1,015 / 1,020 100.0% 63 / 63
FirefoxFirefox
 96.51% 9,435 / 9,776 100.0% 1,367 / 1,367 — 0.0% 0 / 36 99.33% 1,338 / 1,347

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,940 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,752 / 121,779 99.88% 15,948 / 15,967 — 99.99% 54,019 / 54,025 99.01% 6,395 / 6,459
SafariSafari
 — 99.92% 7,095 / 7,101 99.99% 25,691 / 25,693 — —
EdgeEdge
 100.0% 26,942 / 26,942 100.0% 343 / 343 — 100.0% 938 / 938 100.0% 55 / 55
FirefoxFirefox
 100.0% 8,028 / 8,028 100.0% 1,122 / 1,122 — 0.0% 0 / 30 99.63% 1,087 / 1,091