← Back to Codec Support Table

Codec: avc1.42143c

87.2% Encoder Support
279,829 of 320,901 sessions supported encoding
87.74% Decoder Support
236,901 of 270,011 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,901 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.81% 144,303 / 144,571 99.74% 19,471 / 19,522 — 99.66% 63,529 / 63,748 98.4% 7,548 / 7,671
SafariSafari
 — 2.06% 177 / 8,603 1.56% 489 / 31,328 — —
EdgeEdge
 99.97% 30,894 / 30,903 99.74% 390 / 391 — 99.37% 946 / 952 100.0% 65 / 65
FirefoxFirefox
 96.04% 9,392 / 9,779 100.0% 1,285 / 1,285 — 0.0% 0 / 27 98.74% 1,249 / 1,265

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,011 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 122,233 / 122,294 99.71% 15,871 / 15,917 — 99.86% 53,620 / 53,696 98.46% 6,393 / 6,493
SafariSafari
 — 1.95% 142 / 7,285 1.55% 398 / 25,709 — —
EdgeEdge
 99.97% 26,913 / 26,922 100.0% 352 / 352 — 100.0% 884 / 884 100.0% 57 / 57
FirefoxFirefox
 99.97% 7,894 / 7,896 100.0% 1,045 / 1,045 — 0.0% 0 / 19 99.04% 1,034 / 1,044