← Back to Codec Support Table

Codec: avc1.4d143c

86.59% Encoder Support
277,460 of 320,445 sessions supported encoding
87.82% Decoder Support
236,241 of 269,000 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 320,445 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.29% 142,940 / 143,965 99.78% 19,603 / 19,647 — 97.65% 62,247 / 63,745 97.84% 7,689 / 7,859
SafariSafari
 — 1.96% 167 / 8,507 1.46% 454 / 31,127 — —
EdgeEdge
 99.78% 31,062 / 31,129 100.0% 367 / 367 — 99.57% 923 / 927 100.0% 56 / 56
FirefoxFirefox
 96.15% 9,302 / 9,674 100.0% 1,298 / 1,298 — 0.0% 0 / 29 98.52% 1,264 / 1,283

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,000 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 121,178 / 121,237 99.75% 16,008 / 16,048 — 99.86% 53,711 / 53,785 98.52% 6,526 / 6,624
SafariSafari
 — 1.95% 139 / 7,141 1.48% 376 / 25,474 — —
EdgeEdge
 99.97% 27,004 / 27,013 100.0% 335 / 335 — 100.0% 857 / 857 100.0% 53 / 53
FirefoxFirefox
 99.95% 7,888 / 7,892 100.0% 1,077 / 1,077 — 0.0% 0 / 25 98.85% 1,033 / 1,045