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• Revision 31972 : Et maintenant on peut aussi importer les fichiers d’export. On peut aussi ...

  8 octobre 2009, par rastapopoulos@… — Log

  Et maintenant on peut aussi importer les fichiers d’export.
  On peut aussi supprimer entièrement un menu, ce qui n’était bizarement pas possible avant.
  Pour la peine, on hausse la version, parce que c’est une nouvelle fonctionnalité d’ajoutée.

• Where is my ffmpeg stream getting saved to ?

  14 mars 2013, par Chris

  I'm just starting to explore ffmpeg (ultimately for use with openCV), and I'm running this command :

  root@beaglebone:/# ffmpeg -f video4linux2 -r 25 -s 640x480 -i /dev/video0 /out.avi

  At which point the camera indicator light turns on and it appears to be capturing. However when I end it with CTRL+C, the file is nowhere to be found.

  Any thoughts ?

  Full output :

  root@beaglebone:/# ffmpeg -f video4linux2 -r 25 -s 640x480 -i /dev/video0 /out.avi
  
  ffmpeg version v0.7.4, Copyright (c) 2000-2011 the Libav developers
  
    built on Oct  9 2012 10:50:57 with gcc 4.5.4 20120305 (prerelease)
  
    configuration: --enable-shared --enable-pthreads --enable-gpl --enable-postproc --enable-avfilter --cross-prefix=arm-angstrom-linux-gnueabi- --prefix=/usr --enable-ffserver --enable-ffplay --enable-x11grab --enable-libtheora --enable-libvorbis --arch=arm --target-os=linux --enable-cross-compile --extra-cflags=' -fexpensive-optimizations -fomit-frame-pointer -O4 -ffast-math -march=armv7-a -fno-tree-vectorize -mthumb-interwork -mfloat-abi=softfp -mfpu=neon -mtune=cortex-a8 --sysroot=/home/koen/setup-scripts/build/tmp-angstrom_v2012_05-eglibc/sysroots/beaglebone' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed' --sysroot=/home/koen/setup-scripts/build/tmp-angstrom_v2012_05-eglibc/sysroots/beaglebone --enable-hardcoded-tables --cpu=cortex-a8
  
    libavutil    51.  7. 0 / 51.  7. 0
  
    libavcodec   53.  6. 0 / 53.  6. 0
  
    libavformat  53.  3. 0 / 53.  3. 0
  
    libavdevice  53.  0. 0 / 53.  0. 0
  
    libavfilter   2.  4. 0 /  2.  4. 0
  
    libswscale    2.  0. 0 /  2.  0. 0
  
    libpostproc  52.  0. 0 / 52.  0. 0
  
  ^C
  
  root@beaglebone:/# ls
  
  bin   dev  home  lost+found  mnt  proc  sbin  tmp  var
  
  boot  etc  lib   media       opt  run   sys   usr
  
  root@beaglebone:/#

• Render video frame via openGLES2 with Android NDK

  27 février 2014, par wolfz

  I made a bin code with NDK to get video frames by ffmpeg decoding, and rendered to opengles, but the screen had nothing changed, it still displayed the launcher.

  *But when i made a apk tolaunch，it always show black。*

  my opengles2.0 ini code is below：

  static int window_init_display(void)
  
  {
  
      EGLint attribs [] = {
  
        EGL_RED_SIZE,        8,
  
        EGL_GREEN_SIZE,      8,
  
        EGL_BLUE_SIZE,       8,
  
        EGL_ALPHA_SIZE,      8,
  
        EGL_DEPTH_SIZE,     16,
  
        EGL_STENCIL_SIZE,    0,
  
        EGL_SAMPLE_BUFFERS,  0,
  
        EGL_SAMPLES,         0,
  
        EGL_SURFACE_TYPE,    EGL_WINDOW_BIT,
  
        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
  
        EGL_NONE
  
      };
  
  
  
      EGLint w, h, format;
  
      EGLint numConfigs;
  
      EGLConfig config;
  
      EGLSurface surface;
  
      EGLContext context;
  
  
  
      EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
  
  
  
      eglInitialize(display, 0, 0);
  
  
  
      eglChooseConfig(display, attribs, &config, 1, &numConfigs);
  
  
  
      eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
  
  
  
      ANativeWindow_setBuffersGeometry(g_application->window, 0, 0, format);
  
  
  
      surface = eglCreateWindowSurface(display, config, g_application->window, NULL);
  
  
  
      eglQuerySurface(display, surface, EGL_WIDTH, &w);    
  
      eglQuerySurface(display, surface, EGL_HEIGHT, &h);
  
      LOGI("EGL_WIDTH=%d, EGL_HEIGHT=%d",w,h);
  
  
  
      eglBindAPI(EGL_OPENGL_ES_API);
  
  
  
      EGLint contextAttrs[] =
  
      {
  
         EGL_CONTEXT_CLIENT_VERSION, 2,
  
         EGL_NONE
  
      };
  
      context = eglCreateContext(display, config, NULL, contextAttrs);
  
  
  
      if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE) 
  
      {         
  
              LOGW("Unable to eglMakeCurrent");      
  
              return -1;   
  
  }
  
  
  
      LOGI("OK init EGL !!!!");

  }

  My render code is below :

  int m_rgbBufferSize = pPicture->iDisplayWidth*pPicture->iDisplayHeight*4;
  
  m_rgbBuffer = new unsigned char[m_rgbBufferSize];
  
  
  
  struct SwsContext *m_sw_context=NULL;
  
  m_sw_context = m_dllSwScale.sws_getCachedContext(m_sw_context,
  
                                                    pPicture->iWidth, pPicture->iHeight, PIX_FMT_YUV420P,
  
                                                    pPicture->iWidth, pPicture->iHeight, PIX_FMT_RGBA,
  
                                                    SWS_FAST_BILINEAR, NULL, NULL, NULL);
  
  
  
  uint8_t *psrc[] = { pPicture->data[0], pPicture->data[1], pPicture->data[2], 0 };
  
  int srcStride[] = { pPicture->iLineSize[0], pPicture->iLineSize[1], pPicture->iLineSize[2], 0 };
  
  uint8_t *dst[]  = { m_rgbBuffer, 0, 0, 0 };
  
  int dstStride[] = { pPicture->iDisplayWidth*4, 0, 0, 0 };
  
  m_dllSwScale.sws_scale(m_sw_context, psrc, srcStride, 0, pPicture->iDisplayHeight, dst, dstStride);
  
  //LOGV("swscale OK");
  
  glEnable(GL_TEXTURE_2D);
  
  glPixelStorei(GL_UNPACK_ALIGNMENT,1);
  
  if(textureid == 0)
  
      glGenTextures(1, &textureid);
  
  glActiveTexture(GL_TEXTURE2);
  
  glBindTexture(GL_TEXTURE_2D, textureid);
  
  glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 
  
                  pPicture->iDisplayWidth, pPicture->iDisplayHeight, GL_RGBA, GL_UNSIGNED_BYTE, m_rgbBuffer);

  Why does nothing display ? Should I use abk not bin file to run ?