Video is not showing on VideoView but I can hear i

问题:

• On my button click I wrote the following code for playing video from my SDCARD (mp4).

  video_view = (VideoView)findViewById(R.id.video_view);
  video_view.setVideoPath("/sdcard/myvideo.mp4");
  video_view.setMediaController(new MediaController(this));
  video_view.start(); 
  

• I can play recorded video from SDCARD in player.

• But when I run it on my application in videoview I can hear only sound.
• Problem : I am not able to see the video.

---- I tried following SO link but still no luck ----

• link 1

• link 2

• Is anybody ever faced this kind of problem ? If yes then how can it solve it ?

回答1:

I've tried every method above, but none of them could work.

Finally, I tried to call this function, then the video appeared.

video_view.setZOrderOnTop(true);

Hope this also works for you.

回答2:

SOLUTION 1:

videoView.setZOrderOnTop(true);

this will set the videoview to the top layer; In other words: block everything under it.

SOLUTION 2:

videoView.setBackgroundColor(Color.TRANSPARENT);

SOLUTION 3:

sometimes this is related about your apptheme; In my case, I changed the apptheme from @style/AppTheme to @android:style/Theme.NoTitleBar.Fullscreen fix my problem.

回答3:

I faced the same issue, my video view resized to the expected video resolution but there is nothing on the screen. I tried to use above mentioned solutions but nothing worked.

I tried to set the visibility and that worked, not sure why. This might help someone who come across this post and is facing an issue like me

videoView = (VideoView) findViewById(R.id.viewLiveStream);
videoView.setVisibility(View.VISIBLE);

Here is my XML, not sure why visibility was an issue.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/activity_bg1"
    android:orientation="vertical">

    <Button
        android:layout_marginTop="10dp"
        android:layout_gravity="center"
        android:id="@+id/btnStreaming"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/start_streaming" />
    <TextView
        android:layout_marginTop="10dp"
        android:layout_gravity="center"
        android:id="@+id/txtStreamingUrl"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textMultiLine"
        android:lines="2" />
    <VideoView
        android:id="@+id/viewLiveStream"
        android:layout_width="640dp"
        android:layout_height="480dp"/>
    <Button
        android:id="@+id/btnPlay"
        android:layout_marginTop="10dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/play"
        android:layout_gravity="center_vertical|center_horizontal"/>
</LinearLayout>
~                                                                                           

回答4:

try this :

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <VideoView 
        android:id="@+id/view"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"/>

</RelativeLayout>

it may be help you...

回答5:

Can you give this a try?

video_view = (VideoView)findViewById(R.id.video_view);
MediaController mediaController = new MediaController(this);
mediaController.setAnchorView(video_view);
mediaController.setMediaPlayer(video_view); //you probably don't need this
video_view.setVideoPath("/sdcard/myvideo.mp4");
video_view.setMediaController(mediaController);
video_view.start(); 

回答6:

I had this exact same issue except that I was adding my video view programmatically. I noticed while inspecting the view hierarchy that the parent ViewGroup had it's layer type set to software.

Since the codebase I work on is shared and I didn't notice that the layer type was being setting to software in a subclass of the parent ViewGroup.

So try setting the parent's views layer type to None or Hardware

// Remove this if your parent ViewGroup has this set
//setLayerType(View.LAYER_TYPE_SOFTWARE, null);

// Or set this layer type if the above is not present
setLayerType(View.LAYER_TYPE_NONE, null);

回答7:

You can do this

video_view = (VideoView)findViewById(R.id.video_view);
video_view.setZOrderMediaOverlay(true);
video_view.setVideoPath("/sdcard/myvideo.mp4");
video_view.setMediaController(new MediaController(this));
video_view.start();
video_view.videoView.setZOrderOnTop(true);

put the setZorderOnTop(true) method after you started the videoView, not before.

回答8:

My solution was placing the VideoView control at top of the layout and no matter if you set the visibility property.

This work for me on a S6 with Android 6.0

回答9:

<VideoView android:layout_height="fill_parent"
 android:layout_width="fill_parent"
 android:layout_centerInParent="true" 
android:id="@+id/myVideo"/>


public class Videoplay extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_videoplay);
         VideoView vidView = (VideoView)findViewById(R.id.myVideo);

        MediaController vidControl = new MediaController(this);

        String vidAddress = "https://archive.org/download/ksnn_compilation_master_the_internet/ksnn_compilation_master_the_internet_512kb.mp4";
        Uri vidUri = Uri.parse(vidAddress);

        Toast.makeText(Videoplay.this, "Loading Teaser",Toast.LENGTH_LONG).show();
        vidView.setVideoURI(vidUri);
          vidView.start();   
        vidControl.setAnchorView(vidView);

        vidView.setMediaController(vidControl);


    }

Here I am playing the video from one of the links.. It works perfectly for me.

Hope this helps..

回答10:

The black screen and audio playing happened with me when I did not release the MediaPlayer object. When you play a video in Activity with media player you have to release it when activity is destroyed. And when you open it again a new instance of media player will be created and use the already released resources.

MediaPlayer.release();

回答11:

I think you use bad mp4 format. Uses Android specific mp4 format!!!