← Back to Codec Support Table

Codec: avc1.420c0b

4.49% Encoder Support
2,823 of 62,830 sessions supported encoding
99.94% Decoder Support
11,912 of 11,919 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 62,830 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.05% 13 / 27,437 0.07% 3 / 4,350 — 0.21% 26 / 12,335 0.62% 10 / 1,616
SafariSafari
 — 2.18% 36 / 1,648 1.5% 105 / 7,006 — —
EdgeEdge
 0.0% 0 / 5,043 0.0% 0 / 41 — 0.0% 0 / 106 0.0% 0 / 10
FirefoxFirefox
 95.2% 2,061 / 2,165 100.0% 263 / 263 — 0.0% 0 / 12 99.66% 294 / 295

VideoDecoder Support Matrix

Browser × Platform decoder support from 11,919 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 5,159 / 5,161 100.0% 680 / 680 — 100.0% 2,257 / 2,257 99.28% 416 / 419
SafariSafari
 — 100.0% 276 / 276 100.0% 1,454 / 1,454 — —
EdgeEdge
 100.0% 1,025 / 1,025 — — 100.0% 30 / 30 —
FirefoxFirefox
 100.0% 423 / 423 100.0% 48 / 48 — — 100.0% 57 / 57