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Codec: avc1.42101e

99.69% Encoder Support
320,216 of 321,202 sessions supported encoding
99.94% Decoder Support
269,831 of 270,001 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 321,202 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.83% 144,026 / 144,265 99.91% 19,623 / 19,640 — 99.77% 63,716 / 63,861 98.82% 7,731 / 7,823
SafariSafari
 — 99.96% 8,485 / 8,488 99.99% 31,359 / 31,362 — —
EdgeEdge
 100.0% 30,909 / 30,910 100.0% 379 / 379 — 99.9% 993 / 994 95.0% 57 / 60
FirefoxFirefox
 95.77% 9,486 / 9,905 100.0% 1,392 / 1,392 — 0.0% 0 / 38 99.06% 1,260 / 1,272

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,001 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,710 / 121,737 99.89% 16,005 / 16,022 — 99.99% 53,845 / 53,852 99.05% 6,557 / 6,620
SafariSafari
 — 99.96% 7,170 / 7,173 99.99% 25,741 / 25,744 — —
EdgeEdge
 100.0% 26,825 / 26,826 100.0% 340 / 340 — 100.0% 914 / 914 96.36% 53 / 55
FirefoxFirefox
 100.0% 8,129 / 8,129 100.0% 1,128 / 1,128 — 0.0% 0 / 29 99.15% 1,044 / 1,053