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Codec: avc1.42000a

15.66% Encoder Support
336,674 of 2,149,719 sessions supported encoding
99.81% Decoder Support
2,094,596 of 2,098,674 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 64 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,719 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 262 / 867,571 0.17% 174 / 100,554 — 0.29% 1,878 / 650,265 0.9% 392 / 43,745
SafariSafari
 — 99.75% 48,095 / 48,217 99.97% 218,204 / 218,272 — —
EdgeEdge
 0.02% 32 / 144,007 0.14% 2 / 1,474 — 0.0% 0 / 4,172 0.3% 2 / 660
FirefoxFirefox
 95.84% 51,438 / 53,670 99.81% 7,434 / 7,448 — 0.0% 0 / 123 97.8% 5,915 / 6,048

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,098,674 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 844,922 / 845,148 99.8% 96,720 / 96,910 — 99.66% 638,219 / 640,401 98.17% 41,714 / 42,490
SafariSafari
 — 99.83% 46,764 / 46,843 99.98% 212,517 / 212,563 — —
EdgeEdge
 99.99% 139,999 / 140,009 100.0% 1,435 / 1,435 — 100.0% 4,088 / 4,088 99.09% 652 / 658
FirefoxFirefox
 99.97% 51,897 / 51,911 99.92% 7,228 / 7,234 — 0.89% 1 / 112 98.46% 5,708 / 5,797