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Codec: avc1.4d040d

3.93% Encoder Support
12,650 of 321,501 sessions supported encoding
99.93% Decoder Support
270,109 of 270,296 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 321,501 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 0.01% 15 / 144,457 0.13% 26 / 19,867 — 0.02% 14 / 63,655 0.33% 26 / 7,775
SafariSafari
 — 1.87% 162 / 8,649 1.46% 458 / 31,476 — —
EdgeEdge
 0.0% 1 / 31,046 0.0% 0 / 357 — 0.0% 0 / 949 0.0% 0 / 43
FirefoxFirefox
 95.84% 9,282 / 9,685 100.0% 1,343 / 1,343 — 0.0% 0 / 37 97.68% 1,304 / 1,335

VideoDecoder Support Matrix

Browser × Platform decoder support from 270,296 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 121,689 / 121,719 99.9% 16,205 / 16,221 — 99.99% 53,744 / 53,751 98.95% 6,500 / 6,569
SafariSafari
 — 99.9% 7,295 / 7,302 99.98% 25,774 / 25,778 — —
EdgeEdge
 100.0% 27,039 / 27,039 100.0% 319 / 319 — 100.0% 873 / 873 100.0% 38 / 38
FirefoxFirefox
 99.98% 8,024 / 8,026 100.0% 1,121 / 1,121 — 0.0% 0 / 29 99.17% 1,080 / 1,089