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Codec: avc1.4d140d

3.99% Encoder Support
12,784 of 320,317 sessions supported encoding
99.93% Decoder Support
269,231 of 269,408 sessions supported decoding

Codec Specifications

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

VideoEncoder Support Matrix

Browser × Platform encoder support from 320,317 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 18 / 143,622 0.14% 28 / 19,872 — 0.03% 16 / 63,540 0.42% 32 / 7,697
SafariSafari
 — 1.91% 164 / 8,567 1.41% 439 / 31,148 — —
EdgeEdge
 0.0% 0 / 31,141 0.0% 0 / 354 — 0.0% 0 / 979 0.0% 0 / 72
FirefoxFirefox
 96.11% 9,517 / 9,902 99.92% 1,313 / 1,314 — 0.0% 0 / 31 97.55% 1,236 / 1,267

VideoDecoder Support Matrix

Browser × Platform decoder support from 269,408 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.96% 121,218 / 121,261 99.88% 16,164 / 16,183 — 99.99% 53,697 / 53,705 99.11% 6,453 / 6,511
SafariSafari
 — 99.85% 7,166 / 7,177 100.0% 25,558 / 25,558 — —
EdgeEdge
 100.0% 27,173 / 27,173 100.0% 305 / 305 — 100.0% 910 / 910 96.67% 58 / 60
FirefoxFirefox
 100.0% 8,072 / 8,072 100.0% 1,059 / 1,059 — 0.0% 0 / 18 99.23% 1,032 / 1,040