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Codec: avc1.42142a

87.23% Encoder Support
279,342 of 320,223 sessions supported encoding
99.93% Decoder Support
268,998 of 269,175 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 320,223 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.84% 144,093 / 144,325 99.89% 19,562 / 19,584 — 99.78% 63,034 / 63,172 98.88% 7,698 / 7,785
SafariSafari
 — 2.15% 185 / 8,586 1.38% 433 / 31,323 — —
EdgeEdge
 100.0% 30,943 / 30,944 99.72% 361 / 362 — 99.59% 980 / 984 98.63% 72 / 73
FirefoxFirefox
 95.95% 9,213 / 9,602 100.0% 1,340 / 1,340 — 0.0% 0 / 37 99.03% 1,321 / 1,334

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,175 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,799 / 121,826 99.86% 15,905 / 15,928 — 99.98% 53,154 / 53,164 99.07% 6,590 / 6,652
SafariSafari
 — 99.93% 7,190 / 7,195 99.99% 25,746 / 25,748 — —
EdgeEdge
 100.0% 26,914 / 26,915 100.0% 321 / 321 — 100.0% 904 / 904 98.55% 68 / 69
FirefoxFirefox
 100.0% 7,830 / 7,830 100.0% 1,109 / 1,109 — 0.0% 0 / 29 99.36% 1,085 / 1,092