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Codec: avc1.420428

87.33% Encoder Support
1,875,412 of 2,147,542 sessions supported encoding
99.81% Decoder Support
2,092,843 of 2,096,851 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 20 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,147,542 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.92% 865,534 / 866,192 99.83% 100,429 / 100,604 — 99.51% 646,238 / 649,416 98.13% 43,322 / 44,148
SafariSafari
 — 1.49% 720 / 48,322 1.84% 4,013 / 218,297 — —
EdgeEdge
 99.99% 143,541 / 143,551 100.0% 1,463 / 1,463 — 99.77% 4,273 / 4,283 98.85% 685 / 693
FirefoxFirefox
 95.87% 51,505 / 53,726 99.97% 7,384 / 7,386 — 0.0% 0 / 94 98.66% 5,886 / 5,966

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,096,851 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 843,687 / 843,887 99.82% 96,812 / 96,990 — 99.65% 637,339 / 639,546 98.38% 42,231 / 42,925
SafariSafari
 — 99.84% 46,900 / 46,976 99.97% 212,655 / 212,711 — —
EdgeEdge
 99.99% 139,594 / 139,604 100.0% 1,426 / 1,426 — 100.0% 4,203 / 4,203 99.12% 679 / 685
FirefoxFirefox
 99.98% 51,906 / 51,918 99.97% 7,150 / 7,152 — 0.0% 0 / 87 98.34% 5,636 / 5,731