← Back to Codec Support Table

Codec: avc1.420815

3.97% Encoder Support
12,732 of 320,478 sessions supported encoding
99.93% Decoder Support
269,101 of 269,294 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 2.1
Maximum Resolution SD (512×480)
Maximum Bitrate 4 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,478 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 43 / 144,269 0.14% 27 / 19,731 — 0.15% 98 / 63,667 0.8% 62 / 7,708
SafariSafari
 — 1.91% 164 / 8,600 1.35% 422 / 31,210 — —
EdgeEdge
 0.03% 9 / 30,792 0.0% 0 / 396 — 0.0% 0 / 941 0.0% 0 / 64
FirefoxFirefox
 95.92% 9,241 / 9,634 100.0% 1,360 / 1,360 — 0.0% 0 / 41 98.06% 1,265 / 1,290

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,294 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.97% 121,740 / 121,780 99.93% 16,017 / 16,029 — 99.99% 53,735 / 53,739 98.98% 6,421 / 6,487
SafariSafari
 — 99.92% 7,156 / 7,162 99.98% 25,541 / 25,546 — —
EdgeEdge
 100.0% 26,830 / 26,831 100.0% 342 / 342 — 100.0% 856 / 856 100.0% 64 / 64
FirefoxFirefox
 100.0% 7,849 / 7,849 100.0% 1,130 / 1,130 — 0.0% 0 / 35 99.25% 1,059 / 1,067