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Codec: avc1.42103d

87.23% Encoder Support
278,932 of 319,759 sessions supported encoding
87.8% Decoder Support
235,905 of 268,673 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 319,759 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.8% 143,550 / 143,839 99.74% 19,520 / 19,571 — 99.68% 63,240 / 63,441 98.27% 7,646 / 7,781
SafariSafari
 — 1.92% 164 / 8,559 1.49% 464 / 31,063 — —
EdgeEdge
 99.98% 30,920 / 30,927 100.0% 375 / 375 — 99.57% 937 / 941 100.0% 52 / 52
FirefoxFirefox
 96.34% 9,344 / 9,699 100.0% 1,353 / 1,353 — 0.0% 0 / 40 98.9% 1,264 / 1,278

VideoDecoder Support Matrix

Browser × Platform decoder support from 268,673 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 121,173 / 121,231 99.71% 15,910 / 15,957 — 99.87% 53,555 / 53,625 98.24% 6,470 / 6,586
SafariSafari
 — 1.89% 136 / 7,178 1.46% 372 / 25,408 — —
EdgeEdge
 99.97% 26,879 / 26,886 100.0% 334 / 334 — 100.0% 887 / 887 100.0% 46 / 46
FirefoxFirefox
 99.92% 7,901 / 7,907 100.0% 1,107 / 1,107 — 0.0% 0 / 30 99.25% 1,059 / 1,067