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Codec: avc1.420c34

87.35% Encoder Support
1,877,057 of 2,148,923 sessions supported encoding
99.81% Decoder Support
2,093,828 of 2,097,905 sessions supported decoding

Codec Specifications

Codec Family AVC (H.264)
Profile Baseline
Level 5.2
Maximum Resolution 8K (8192×4352)
Maximum Bitrate 240 Mbps

VideoEncoder Support Matrix

Browser × Platform encoder support from 2,148,923 test sessions. Browser detection based on user agent strings.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.93% 867,215 / 867,831 99.79% 100,255 / 100,465 — 99.51% 646,457 / 649,616 98.09% 43,005 / 43,844
SafariSafari
 — 1.49% 720 / 48,168 1.86% 4,065 / 218,177 — —
EdgeEdge
 99.99% 143,794 / 143,803 100.0% 1,475 / 1,475 — 99.88% 4,202 / 4,207 98.46% 702 / 713
FirefoxFirefox
 95.85% 51,326 / 53,550 99.97% 7,412 / 7,414 — 0.0% 0 / 112 98.75% 5,984 / 6,060

VideoDecoder Support Matrix

Browser × Platform decoder support from 2,097,905 test sessions. Decoder data collection started Jan 2026.

Browser Windows Windows macOS macOS iOS iOS Android Android Linux Linux
ChromeChrome/Chromium
 99.98% 845,074 / 845,273 99.79% 96,622 / 96,827 — 99.65% 637,533 / 639,746 98.34% 41,882 / 42,589
SafariSafari
 — 99.85% 46,708 / 46,777 99.98% 212,565 / 212,614 — —
EdgeEdge
 99.99% 139,804 / 139,812 100.0% 1,431 / 1,431 — 100.0% 4,138 / 4,138 98.73% 700 / 709
FirefoxFirefox
 99.97% 51,761 / 51,778 99.97% 7,165 / 7,167 — 0.0% 0 / 103 98.44% 5,744 / 5,835