Video Call on Android API 22+ do not work

[tianranwangcs]

I can take a video call on Android 4.4.4, however I can't do it in Android 5.0 or 6.0.
When I debug the source code, the app crush at line 411 in org.sipdroid.sipua.ui.VideoCamera.java.
Can anyone help me?

try {
            mMediaRecorder.prepare();
            mMediaRecorder.setOnErrorListener(this);
            mMediaRecorder.start(); // crush at here, line 411
        } catch (IOException exception) {
            releaseMediaRecorder();
            finish();
            return false;
        }

The console output is this:

E/MediaRecorder: start failed: -38

[jkisanga]

Can not even make call in android 6

[yeahia2508]

Did you found any solution? @tianranwangcs

[hamzabutt33221]

runtime permissions issue.