← Back to Codec Support Table

Codec: avc1.420c1e

87.31% Encoder Support
1,876,367 of 2,149,011 sessions supported encoding
99.81% Decoder Support
2,093,459 of 2,097,538 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 3
Maximum Resolution SD/DVD (720×480)
Maximum Bitrate 10 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,149,011 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.92% 866,834 / 867,495 99.8% 100,341 / 100,541 — 99.5% 646,539 / 649,773 98.05% 42,915 / 43,767
SafariSafari
 — 1.55% 744 / 48,003 1.85% 4,057 / 219,125 — —
EdgeEdge
 100.0% 143,525 / 143,532 99.93% 1,447 / 1,448 — 99.88% 4,152 / 4,157 99.42% 685 / 689
FirefoxFirefox
 95.9% 51,276 / 53,468 99.96% 7,400 / 7,403 — 0.0% 0 / 122 98.86% 6,005 / 6,074

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,538 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,671 / 844,875 99.79% 96,658 / 96,863 — 99.65% 637,592 / 639,857 98.41% 41,896 / 42,571
SafariSafari
 — 99.86% 46,540 / 46,603 99.98% 213,343 / 213,384 — —
EdgeEdge
 99.99% 139,459 / 139,466 100.0% 1,418 / 1,418 — 100.0% 4,083 / 4,083 99.71% 679 / 681
FirefoxFirefox
 99.96% 51,596 / 51,617 99.94% 7,177 / 7,181 — 0.0% 0 / 112 98.38% 5,713 / 5,807