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Codec: avc1.420c0b

3.38% Encoder Support
72,567 of 2,148,743 sessions supported encoding
99.81% Decoder Support
2,093,838 of 2,097,808 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 1.1
Maximum Resolution SD (384×384 or smaller)
Maximum Bitrate 192 Kbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,148,743 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 264 / 868,185 0.15% 154 / 100,415 — 0.31% 2,004 / 649,221 0.93% 414 / 44,293
SafariSafari
 — 1.54% 738 / 48,059 1.86% 4,064 / 218,249 — —
EdgeEdge
 0.03% 43 / 143,343 0.0% 0 / 1,469 — 0.0% 0 / 4,252 0.15% 1 / 659
FirefoxFirefox
 95.89% 51,364 / 53,563 99.96% 7,426 / 7,429 — 0.0% 0 / 101 97.97% 5,884 / 6,006

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,808 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,726 / 845,907 99.82% 96,567 / 96,745 — 99.66% 636,973 / 639,143 98.35% 42,384 / 43,096
SafariSafari
 — 99.84% 46,608 / 46,684 99.98% 212,635 / 212,678 — —
EdgeEdge
 99.99% 139,316 / 139,325 100.0% 1,436 / 1,436 — 100.0% 4,176 / 4,176 99.39% 648 / 652
FirefoxFirefox
 99.97% 51,805 / 51,821 100.0% 7,214 / 7,214 — 1.1% 1 / 91 98.28% 5,669 / 5,768