android - How to disable interaction with html5 videos in webview or properly catch their exceptions?

Question

I have app with webview and I use ACRA. I receive crash reports from users with errors caused by interaction with HTML5Video.

Error 1:

"java.lang.NullPointerException
    at android.webkit.HTML5VideoViewProxy$VideoPlayer.exitFullScreenVideo(HTML5VideoViewProxy.java:180)
    at android.webkit.HTML5VideoViewProxy.exitFullScreenVideo(HTML5VideoViewProxy.java:770)
    at android.webkit.WebViewClassic$PrivateHandler.handleMessage(WebViewClassic.java:7422)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:5039)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
    at dalvik.system.NativeStart.main(Native Method)"

Error 2:

"java.lang.NullPointerException
    at android.webkit.HTML5VideoFullscreen.switchProgressView(HTML5VideoFullscreen.java:455)
    at android.webkit.HTML5VideoView.enterFullscreenVideoState(HTML5VideoView.java:546)
    at android.webkit.HTML5VideoViewProxy$VideoPlayer.enterFullscreenVideo(HTML5VideoViewProxy.java:182)
    at android.webkit.HTML5VideoViewProxy.handleMessage(HTML5VideoViewProxy.java:479)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:155)
    at android.app.ActivityThread.main(ActivityThread.java:5485)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
    at dalvik.system.NativeStart.main(Native Method)"

Here are my DropBox logs if needed:

for error 1: http://pastebin.com/w8G1UJvG

seems to be interesting:

11-14 22:19:29.912 E/libEGL  (14744): call to OpenGL ES API with no current context (logged once per thread)
11-14 22:19:29.917 W/dalvikvm(14744): threadid=1: thread exiting with uncaught exception (group=0x40d4a2d0)

for error 2: http://pastebin.com/8BEK1vAm

seems to be interesting:

12-10 00:14:52.542 W/YourLogTag(24823): Couldn't find activity to view mimetype: video/x-m4v

In fact I even don't suggest interaction with HTML5 videos in my webview. I guess, users open them from pages, interaction with which is also not provided. Also I think it's a bad way to try to prohibit users interaction with other webpages (and it may be really hard in case of my app). But also, user definetely don't experience a warm feeling to my app, when crash dialog appears before him...

So I want to block users' interaction with HTML5 Video in my webview or just catch exceptions properly (seems to be not very good approach). What's the best way to do it?

Here are my webview settings, if they're required:

webView.getSettings().setJavaScriptEnabled(false);
webView.getSettings().setUserAgentString("Some user agent");