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Codec: avc1.420c2a

87.24% Encoder Support
279,868 of 320,784 sessions supported encoding
99.93% Decoder Support
269,410 of 269,587 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 4.2
Maximum Resolution 1080p (1920×1080)
Maximum Bitrate 50 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,784 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 143,877 / 144,117 99.92% 19,809 / 19,824 — 99.78% 63,454 / 63,597 98.98% 7,537 / 7,615
SafariSafari
 — 1.94% 166 / 8,540 1.47% 462 / 31,357 — —
EdgeEdge
 100.0% 31,005 / 31,006 99.73% 364 / 365 — 99.68% 948 / 951 98.63% 72 / 73
FirefoxFirefox
 96.13% 9,353 / 9,730 100.0% 1,417 / 1,417 — 0.0% 0 / 32 98.62% 1,291 / 1,309

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,587 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,615 / 121,645 99.91% 16,126 / 16,141 — 99.98% 53,634 / 53,643 99.14% 6,358 / 6,413
SafariSafari
 — 99.93% 7,171 / 7,176 99.98% 25,700 / 25,706 — —
EdgeEdge
 100.0% 26,993 / 26,993 100.0% 319 / 319 — 100.0% 875 / 875 98.51% 66 / 67
FirefoxFirefox
 100.0% 7,923 / 7,923 100.0% 1,162 / 1,162 — 0.0% 0 / 26 99.16% 1,066 / 1,075