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Codec: avc1.42040d

3.37% Encoder Support
72,409 of 2,148,288 sessions supported encoding
99.8% Decoder Support
2,093,143 of 2,097,305 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1.3
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 768 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,148,288 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 249 / 866,795 0.15% 155 / 100,942 — 0.3% 1,946 / 648,916 0.9% 391 / 43,608
SafariSafari
 — 1.49% 717 / 48,036 1.87% 4,085 / 218,879 — —
EdgeEdge
 0.02% 35 / 144,138 0.07% 1 / 1,490 — 0.0% 0 / 4,137 0.15% 1 / 685
FirefoxFirefox
 95.79% 51,410 / 53,668 99.92% 7,337 / 7,343 — 0.0% 0 / 117 97.69% 5,924 / 6,064

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,305 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 844,056 / 844,250 99.8% 96,939 / 97,130 — 99.64% 636,810 / 639,109 98.35% 41,723 / 42,421
SafariSafari
 — 99.84% 46,614 / 46,688 99.98% 213,328 / 213,378 — —
EdgeEdge
 99.99% 140,122 / 140,130 100.0% 1,449 / 1,449 — 100.0% 4,062 / 4,062 98.83% 674 / 682
FirefoxFirefox
 99.97% 51,880 / 51,894 99.94% 7,126 / 7,130 — 0.0% 0 / 109 98.11% 5,712 / 5,822