← Back to Codec Support Table

Codec: avc1.42103c

87.21% Encoder Support
1,872,809 of 2,147,579 sessions supported encoding
87.4% Decoder Support
1,832,465 of 2,096,537 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 2,147,579 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.91% 865,734 / 866,556 99.66% 100,038 / 100,383 — 99.25% 643,911 / 648,797 97.31% 42,732 / 43,914
SafariSafari
 — 1.51% 727 / 48,207 1.88% 4,102 / 218,632 — —
EdgeEdge
 99.97% 143,781 / 143,829 99.93% 1,484 / 1,485 — 99.76% 4,183 / 4,193 98.86% 692 / 700
FirefoxFirefox
 95.97% 51,668 / 53,839 99.99% 7,333 / 7,334 — 1.89% 2 / 106 98.65% 6,074 / 6,157

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,537 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.95% 843,768 / 844,160 99.65% 96,328 / 96,668 — 99.36% 634,847 / 638,909 97.41% 41,566 / 42,673
SafariSafari
 — 1.55% 728 / 46,853 1.88% 3,999 / 213,029 — —
EdgeEdge
 99.97% 139,747 / 139,795 100.0% 1,441 / 1,441 — 100.0% 4,123 / 4,123 99.28% 687 / 692
FirefoxFirefox
 99.95% 51,997 / 52,024 99.89% 7,090 / 7,098 — 2.06% 2 / 97 98.34% 5,815 / 5,913