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Codec: avc1.4d143d

86.48% Encoder Support
277,080 of 320,400 sessions supported encoding
87.7% Decoder Support
236,180 of 269,294 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 6.1
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 480 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,400 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.3% 142,843 / 143,857 99.75% 19,618 / 19,668 — 97.59% 62,319 / 63,858 97.65% 7,390 / 7,568
SafariSafari
 — 1.83% 158 / 8,638 1.37% 429 / 31,331 — —
EdgeEdge
 99.81% 30,895 / 30,953 99.73% 364 / 365 — 99.08% 970 / 979 98.21% 55 / 56
FirefoxFirefox
 96.21% 9,311 / 9,678 100.0% 1,394 / 1,394 — 0.0% 0 / 35 99.13% 1,249 / 1,260

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,294 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 121,368 / 121,424 99.75% 15,954 / 15,994 — 99.84% 53,694 / 53,778 98.36% 6,302 / 6,407
SafariSafari
 — 1.84% 133 / 7,228 1.36% 350 / 25,749 — —
EdgeEdge
 99.99% 26,962 / 26,965 100.0% 323 / 323 — 100.0% 890 / 890 98.04% 50 / 51
FirefoxFirefox
 99.95% 7,920 / 7,924 100.0% 1,144 / 1,144 — 0.0% 0 / 22 99.52% 1,027 / 1,032