This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The videoBitsPerSecond read-only property of the MediaRecorder interface returns the video encoding bit rate in use. This may differ from the bit rate specified in the constructor, if it was provided.


var videoBitsPerSecond = MediaRecorder.videoBitsPerSecond


A Number (unsigned long).


// TBD


Specification Status Comment
MediaStream Recording
The definition of 'videoBitsPerSecond' in that specification.
Working Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Chrome Full support 49Edge ? Firefox ? IE ? Opera ? Safari ? WebView Android Full support 49Chrome Android Full support 49Edge Mobile ? Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android Full support 5.0


Full support  
Full support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

Document Tags and Contributors

Contributors to this page: fscholz, david_ross, jpmedley
Last updated by: fscholz,