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• avcodec/libdav1d : honor the requested strict_std_compliance level on supported builds

  7 janvier 2022, par James Almer

  avcodec/libdav1d : honor the requested strict_std_compliance level on supported builds
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/libdav1d.c

• FFmpeg can not open video file after adding the GLsurfaceView to render frames

  4 avril 2016, par Kyle Lo

  The source code works perfectly without any modification.

  I successfully use the below function to play the specified video.

  playview.openVideoFile("/sdcard/Test/mv.mp4");

  And for the research purpose I need to display the frame by using OpenGL ES. So I remove the original method below.

  ANativeWindow* window = ANativeWindow_fromSurface(env, javaSurface);
  
  
  
  ANativeWindow_Buffer buffer;
  
  if (ANativeWindow_lock(window, &buffer, NULL) == 0) {
  
    memcpy(buffer.bits, pixels,  w * h * 2);
  
    ANativeWindow_unlockAndPost(window);
  
  }
  
  
  
  ANativeWindow_release(window);

  And I add FrameRenderer class into my project

  public class FrameRenderer implements GLSurfaceView.Renderer {
  
  
  
      public long time = 0;
  
      public short framerate = 0;
  
      public long fpsTime = 0;
  
      public long frameTime = 0;
  
      public float avgFPS = 0;
  
      private PlayNative mNative = null;
  
  
  
      @Override
  
      public void onSurfaceCreated(GL10 gl, EGLConfig config) {/*do nothing*/}
  
  
  
      @Override
  
      public void onSurfaceChanged(GL10 gl, int width, int height) {
  
  
  
      }
  
  
  
      @Override
  
      public void onDrawFrame(GL10 gl) {
  
          mNative.render();
  
      }

  In the native side I create a corresponding method in VideoPlay.cpp And I only use glClearColorto test if the OpenGL function works or not.

  void VideoPlay::render() {
  
      glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
  
      glClear(GL_COLOR_BUFFER_BIT);
  
  }

  And the onCreate is as below.

  protected void onCreate(Bundle savedInstanceState) {
  
          // TODO Auto-generated method stub
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.main_layout);
  
  
  
          playview = new PlayView(this);
  
  
  
          playview.openVideoFile("/sdcard/test_tt_racing.mp4");
  
          //playview.openVideoFile("/sdcard/big_buck_bunny.mp4");
  
  
  
          GLSurfaceView surface = (GLSurfaceView)findViewById(R.id.surfaceviewclass);
  
          surface.setRenderer(new FrameRenderer());
  
          ...

  Then test it on the mobile, the screen becomes red which means the GLSurfaceView and OpenGL works fine.

  But after I press the play bottom, whole the app stucked. And Show in the
  Log

  My question is why I can open the video whose path is totally the same with the previous one, just after I added the GLsurface renderer and how can I fix it ?

• ffplay with gdigrab doesn't render properly

  14 avril 2022, par laggingreflex

  I'm trying to do this :

  


  ffplay -f gdigrab -framerate 30 -i title="Untitled - Notepad"


  


  It's supposed to show the notepad window in the ffplay window.

  


  But it doesn't seem to render properly.. it shows scrollbars but not anything written in the notepad. Other windows ("calculator") don't show properly either.

  


  Does ffplay not work (well) with gdigrab ? Or is it just me ?