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Codec: avc1.4d103c

86.53% Encoder Support
277,533 of 320,738 sessions supported encoding
87.76% Decoder Support
236,577 of 269,584 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Main
Level 6
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,738 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.27% 143,339 / 144,400 99.69% 19,630 / 19,691 — 97.62% 62,054 / 63,568 97.79% 7,649 / 7,822
SafariSafari
 — 1.98% 169 / 8,539 1.45% 454 / 31,204 — —
EdgeEdge
 99.81% 30,696 / 30,753 99.73% 376 / 377 — 99.07% 960 / 969 98.48% 65 / 66
FirefoxFirefox
 95.84% 9,435 / 9,845 100.0% 1,339 / 1,339 — 0.0% 0 / 35 98.76% 1,272 / 1,288

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,584 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 121,803 / 121,866 99.69% 15,912 / 15,962 — 99.84% 53,536 / 53,621 98.59% 6,484 / 6,577
SafariSafari
 — 2.06% 148 / 7,198 1.42% 363 / 25,644 — —
EdgeEdge
 99.98% 26,848 / 26,853 100.0% 339 / 339 — 100.0% 888 / 888 98.33% 59 / 60
FirefoxFirefox
 99.91% 7,995 / 8,002 99.91% 1,102 / 1,103 — 0.0% 0 / 25 99.04% 1,037 / 1,047