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Codec: avc1.42040c

4.42% Encoder Support
2,782 of 62,887 sessions supported encoding
99.94% Decoder Support
11,830 of 11,837 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1.2
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 384 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 62,887 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 4 / 27,801 0.09% 4 / 4,343 — 0.12% 14 / 12,104 0.57% 9 / 1,584
SafariSafari
 — 2.82% 46 / 1,634 1.62% 114 / 7,032 — —
EdgeEdge
 0.0% 0 / 5,064 0.0% 0 / 48 — 0.0% 0 / 115 —
FirefoxFirefox
 95.58% 2,010 / 2,103 100.0% 286 / 286 — 0.0% 0 / 11 98.26% 283 / 288

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,837 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 5,269 / 5,270 99.85% 662 / 663 — 100.0% 2,193 / 2,193 99.21% 375 / 378
SafariSafari
 — 100.0% 260 / 260 100.0% 1,398 / 1,398 — —
EdgeEdge
 100.0% 1,072 / 1,072 — — 100.0% 32 / 32 —
FirefoxFirefox
 100.0% 384 / 384 100.0% 50 / 50 — — 100.0% 54 / 54