WebRTC ScreenCapturerAndroid

Question

I'm trying to create a screen capturer app for android. I already have the webRTC portion setup with a video capturer using Camera2Enumerator library from here. How can I modify this to create a pre-recorded video capturer instead of camera capturer.

Thanks!

score 0 · Accepted Answer · edited Aug 03 '21 at 14:36

Just wanted to give an update that I have solved this. I'm unable to share the entire code but here's a process that might help:

Acquire one frame of your pre-recorded file and store in a byte array(must be in YUV format)

Replace the VideoCapturer() with the following:

fun onGetFrame(p0: ByteArray?) {

    var timestampNS = java.util.concurrent.TimeUnit.MILLISECONDS.toNanos(SystemClock.elapsedRealtime())

    var buffer:NV21Buffer = NV21Buffer(p0,288,352,null)

    var videoFrame:VideoFrame = VideoFrame(buffer,0,timestampNS)

    localVideoSource.capturerObserver.onFrameCaptured(videoFrame)

    videoFrame.release()

}

where p0 is the byte array with the frame

Call this function in startLocalVideoCapture() using a timer (every few milliseconds...I used 10 nanoseconds) https://developer.android.com/reference/android/os/CountDownTimer

remove this line in startLocalVideoCapture()--->

VideoCapturer.initialize(
            surfaceTextureHelper,
            localVideoOutput.context,
            localVideoSource.capturerObserver)

WebRTC ScreenCapturerAndroid

1 Answers1