textureview

问题 I have a TextureView with a fixed width and height and I want to show a camera preview inside of it. I need to crop the camera preview so that it doesn't look stretched inside my TextureView. How to do the cropping? If I need to use OpenGL, how to tie the Surface Texture to OpenGL and how to do the cropping with OpenGL? public class MyActivity extends Activity implements TextureView.SurfaceTextureListener { private Camera mCamera; private TextureView mTextureView; @Override protected void

问题 I performed some simple timing of MoviePlayer.java in the Grafika MediaCodec sample code running on a Nexus 5. I put a log statement at these locations: At line 203 just before decoder.queueInputBuffer At line 244 after decoder.dequeueOutputBuffer I correlated the log statements using presentationTimeUs . Here is an excerpt from logcat: 01-29 10:56:43.295: I/Grafika(21286): queueInputBuffer index/pts, 2,0 01-29 10:56:43.305: I/Grafika(21286): queueInputBuffer index/pts, 0,33100 01-29 10:56:43

问题 I am trying to fade in a TextureView but for some reason its not animating. It just simply pops in the video, no fade at all and i dont really know why that is because after some research i have found that TextureView can be animated normally. Here is my code, i hope you guys can give me a pointer in the right direction. PS, i have left out all irrelevant code that does not concern itself with the textureview and the animation. public class MainActivity extends AppCompatActivity implements

问题 Hello I worked on a GLTextureView to display an alpha video, but because of the alpha channel I setted setEGLConfigChooser(8, 8, 8, 8, 16, 0); I tried a first time with a GLSurfaceView but the problem was that it needed a setZOrderOnTop(true) to show it and the view wasn't anymore attached to it's container (which is a zoomView). A TextureView is better but now I've my video in a hole rectangle on my container sadly! Source: wanted --[EDIT]-- Here some exemple : On top it's an GLSurfaceView

问题 I inserted textureview in my recyclerview,this guide I found in StackOverflow https://stackoverflow.com/a/17450763/6241501 but when I try to i,plement this in my recycler view I saw that video are all playing,but I need to all video be stopped when I starting my app.How can I do that? TextureView class: public class MyVideoView extends TextureView implements TextureView.SurfaceTextureListener { private MediaPlayer mMediaPlayer; private Uri mSource; private MediaPlayer.OnCompletionListener

问题 Iam trying to animate a video rendered using texture view, the animation works fine , but when i scale the texture to a different size the media player does not scale to fit the size of the texture,the video is always playing full screen in the background and i can only see part of the video when i scale the texture my code works fine on some android devices running android 4.0 but does not work on devices with later versions of android . heres my code for the animation kindly tell me where

问题 I am using a TextureView with a MediaPlayer to play an mp4 video from a url. Is there any way I can programatically check if the video I am playing has sound? Edit: I'm using API 14, so I don't have access to the MediaPlayer method getTrackInfo Many Thanks 回答1: In API level 16 or later, the MediaPlayer class has a getTrackInfo method that returns a TrackInfo[]. You could then call getTrackType for each element in the array and see if you get MEDIA_TRACK_TYPE_AUDIO . 来源： https://stackoverflow

问题 I'm using JavaCV's FFmpegFrameGrabber to retrieve frames from a video file. This FFmpegFrameGrabber return a Frame which basically contain a Buffer[] to hold image pixels for a video frame. Because performance is my top priority, I would like to use OpenGL ES to display this Buffer[] directly without converting it into Bitmap . The view to be displayed is only taking less than half of the screen and following the OpenGL ES document: Developers who want to incorporate OpenGL ES graphics in a

问题 Java and C# (Xamarin.Android) accepted I have a MediaRecorder that streams the cameraframes onto a TextureView (basic camera2 approach) the TextureView fills my screen. I want the video to fill the screen but keep the aspect ratio. I know I have to eventually cut of either left/right or top/bottom parts of the video, to keep the aspect ratio. How can I make the video fit the TextureView and "zoom in" until the whole screen is filled? I don't want "black bars" that compromise for the ratio to

问题 I have a TextureView that displays a bitmap(placeholder image) and when the user loads a video the textureView should show the video. I managed to get video playback in the texture view and showing a bitmap in a textureview, but when done in sequence i just get a black screen. In my onSurfaceTextureAvailable method i draw a bitmap on the surface view as followed: @Override public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { Bitmap bm = BitmapFactory