← Back to Codec Support Table

Codec: avc1.420c16

87.38% Encoder Support
1,877,146 of 2,148,301 sessions supported encoding
99.81% Decoder Support
2,093,335 of 2,097,390 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 2.2
Maximum Resolution SD/DVD (720×480)
Maximum Bitrate 4 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,148,301 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 865,524 / 866,153 99.81% 100,209 / 100,400 — 99.52% 648,101 / 651,224 98.0% 42,813 / 43,685
SafariSafari
 — 1.53% 739 / 48,299 1.84% 4,004 / 217,449 — —
EdgeEdge
 99.99% 143,757 / 143,765 99.93% 1,489 / 1,490 — 99.83% 4,171 / 4,178 98.35% 657 / 668
FirefoxFirefox
 96.03% 51,697 / 53,835 99.96% 7,565 / 7,568 — 0.0% 0 / 112 98.75% 5,915 / 5,990

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,390 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 843,607 / 843,804 99.81% 96,634 / 96,816 — 99.66% 638,972 / 641,168 98.28% 41,736 / 42,466
SafariSafari
 — 99.82% 46,813 / 46,898 99.98% 211,885 / 211,929 — —
EdgeEdge
 99.99% 139,767 / 139,775 100.0% 1,444 / 1,444 — 100.0% 4,115 / 4,115 98.63% 648 / 657
FirefoxFirefox
 99.98% 52,065 / 52,078 99.95% 7,284 / 7,288 — 0.0% 0 / 104 98.52% 5,673 / 5,758