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Codec: avc1.420432

85.44% Encoder Support
53,542 of 62,667 sessions supported encoding
99.95% Decoder Support
11,851 of 11,857 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5
Maximum Resolution 4K (4096×2176)
Maximum Bitrate 135 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,667 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
99.74% 27,737 / 27,810 100.0% 4,346 / 4,346 99.73% 11,991 / 12,023 99.16% 1,529 / 1,542
SafariSafari
2.26% 35 / 1,547 1.77% 125 / 7,049
EdgeEdge
99.98% 5,000 / 5,001 98.04% 50 / 51 100.0% 100 / 100 100.0% 14 / 14
FirefoxFirefox
94.9% 1,989 / 2,096 100.0% 303 / 303 0.0% 0 / 11 98.97% 288 / 291

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,857 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
99.98% 5,237 / 5,238 100.0% 705 / 705 100.0% 2,192 / 2,192 99.46% 369 / 371
SafariSafari
100.0% 237 / 237 100.0% 1,462 / 1,462
EdgeEdge
100.0% 1,030 / 1,030 100.0% 25 / 25
FirefoxFirefox
100.0% 397 / 397 100.0% 45 / 45 100.0% 53 / 53