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Codec: avc1.42042a

85.46% Encoder Support
53,965 of 63,149 sessions supported encoding
99.9% Decoder Support
11,857 of 11,869 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 63,149 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.73% 27,831 / 27,906 99.91% 4,305 / 4,309 — 99.71% 12,148 / 12,183 98.97% 1,543 / 1,559
SafariSafari
 — 2.57% 42 / 1,632 1.57% 110 / 7,020 — —
EdgeEdge
 100.0% 4,996 / 4,996 100.0% 54 / 54 — 100.0% 116 / 116 —
FirefoxFirefox
 95.27% 2,196 / 2,305 100.0% 281 / 281 — 0.0% 0 / 16 100.0% 298 / 298

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,869 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,128 / 5,130 99.56% 683 / 686 — 100.0% 2,271 / 2,271 98.96% 379 / 383
SafariSafari
 — 100.0% 278 / 278 100.0% 1,419 / 1,419 — —
EdgeEdge
 100.0% 1,045 / 1,045 100.0% 11 / 11 — 100.0% 36 / 36 —
FirefoxFirefox
 100.0% 401 / 401 100.0% 50 / 50 — — 100.0% 74 / 74