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Codec: avc1.420c0d

3.99% Encoder Support
12,798 of 320,689 sessions supported encoding
99.93% Decoder Support
269,773 of 269,953 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 320,689 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.03% 47 / 144,223 0.21% 40 / 19,485 — 0.15% 98 / 63,741 0.85% 67 / 7,851
SafariSafari
 — 1.63% 142 / 8,696 1.56% 489 / 31,312 — —
EdgeEdge
 0.04% 11 / 30,928 0.0% 0 / 355 — 0.0% 0 / 940 0.0% 0 / 68
FirefoxFirefox
 96.13% 9,292 / 9,666 100.0% 1,337 / 1,337 — 0.0% 0 / 33 97.5% 1,248 / 1,280

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,953 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,845 / 121,873 99.89% 15,848 / 15,865 — 99.98% 53,854 / 53,865 99.05% 6,601 / 6,664
SafariSafari
 — 99.96% 7,260 / 7,263 99.99% 25,772 / 25,775 — —
EdgeEdge
 100.0% 26,948 / 26,949 100.0% 309 / 309 — 100.0% 868 / 868 100.0% 64 / 64
FirefoxFirefox
 99.99% 7,885 / 7,886 100.0% 1,111 / 1,111 — 0.0% 0 / 23 99.24% 1,039 / 1,047