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• How To Install FFMPEG on Elastic Beanstalk

  26 mars 2020, par Nick Lynch

  This is not a duplicate, I have found one thread, and it is outdated and does not work :
  Install ffmpeg on elastic beanstalk using ebextensions config.

  I have been trying to install this for some time, nothing seems to work.
  Please share the config.yml that will make this work.

  I am using 64bit Amazon Linux 2016.03 v2.1.6 running PHP 7.0 on Elastic Beanstalk

  ---

  My current file is

  branch-defaults: 
  
    default: 
  
      environment: Default-Environment
  
    master: 
  
      environment: Default-Environment
  
  global: 
  
    application_name: "My First Elastic Beanstalk Application"
  
    default_ec2_keyname: ~
  
    default_platform: "64bit Amazon Linux 2016.03 v2.1.6 running PHP 7.0"
  
    default_region: us-east-1
  
    profile: eb-cli
  
    sc: git
  
  packages: ~
  
  yum: 
  
    ImageMagick: []
  
    ImageMagick-devel: []
  
    commands: 
  
      01-wget: 
  
        command: "wget -O /tmp/ffmpeg.tar.gz http://ffmpeg.gusari.org/static/64bit/ffmpeg.static.64bit.2014-03-05.tar.gz"
  
      02-mkdir: 
  
        command: "if [ ! -d /opt/ffmpeg ] ; then mkdir -p /opt/ffmpeg; fi"
  
      03-tar: 
  
        command: "tar -xzf ffmpeg.tar.gz -C /opt/ffmpeg"
  
        cwd: /tmp
  
      04-ln: 
  
        command: "if [[ ! -f /usr/bin/ffmpeg ]] ; then ln -s /opt/ffmpeg/ffmpeg /usr/bin/ffmpeg; fi"
  
      05-ln: 
  
        command: "if [[ ! -f /usr/bin/ffprobe ]] ; then ln -s /opt/ffmpeg/ffprobe /usr/bin/ffprobe; fi"
  
      06-pecl: 
  
        command: "if [ `pecl list | grep imagick` ] ; then pecl install -f imagick; fi"

• Encoding of D3D11Texture2D to an rtsp stream using libav*

  1er décembre 2020, par uzer

  Firstly I'll declare that I am just beginning with whole libav* and no experience with DirectX, so please go easy on me.

  


  I have managed to create a rtsp stream using libav* using video file as source. Now, I am trying to create an rtsp stream from an ID3D11Texture2D, which I am obtaining from GDI API using Bitblit method. Here's my approach for creating live rtsp stream :

  


  

  1. Set input context

     

     • AVFormatContext* ifmt_ctx = avformat_alloc_context() ;

     


     • avformat_open_input(&ifmt_ctx, _videoFileName, 0, 0) ;

     


     


  


  2. Set output context

     

     • avformat_alloc_output_context2(&ofmt_ctx, NULL, "rtsp", _rtspServerAdress) ; //RTSP

     


     • copy all the codec context and stream from input to output

     


     


  


  3. Start streaming

     

     • while av_read_frame(ifmt_ctx, &pkt) ; is valid av_interleaved_write_frame(ofmt_ctx, &pkt) ;

     


     • with some timestamp checks and conditions for livestreaming

     


     


  


  


  Now I am finding it difficult to follow current libav* documentation (which is deprecated) and little tutorial content available online.

  


  The most relevant article I found on working between directX and libav* is this article.
However it's actually doing the opposite of what I need to do. I am not sure how to go about creating input stream and context with DirectX texture ! How can I convert the texture into an AVFrame which can be encoded to an AVStream ?

  


  Here's some rough outline of what I am expecting

  


  ID3D11Texture2D* win_textureptr = WindowManager::Get().GetWindow(RtspStreaming::WindowId())->GetWindowTexture();&#xA;&#xA;    D3D11_TEXTURE2D_DESC* desc;&#xA;    win_textureptr->GetDesc(desc);&#xA;    int width = desc->Width;&#xA;    int height = desc->Height;&#xA;    //double audio_time=0.0;&#xA;    auto start_time = std::chrono::system_clock::now();&#xA;    std::chrono::duration<double> video_time;&#xA;    &#xA;    //DirectX BGRA to h264 YUV420p&#xA;    SwsContext* conversion_ctx = sws_getContext(&#xA;        width, height, AV_PIX_FMT_BGRA,&#xA;        width, height, AV_PIX_FMT_YUV420P,&#xA;        SWS_BICUBLIN | SWS_BITEXACT, nullptr, nullptr, nullptr);&#xA;    &#xA;    uint8_t* sw_data[AV_NUM_DATA_POINTERS];&#xA;    int sw_linesize[AV_NUM_DATA_POINTERS];&#xA;&#xA;    while (RtspStreaming::IsStreaming())&#xA;    {&#xA;&#xA;        //copy the texture&#xA;        //win_textureptr->GetPrivateData();&#xA;        &#xA;&#xA;        // convert BGRA to yuv420 pixel format&#xA;        /*&#xA;    frame = av_frame_alloc();&#xA;        //this obviously is incorrect... I would like to use d3d11 texture here instead of frame&#xA;        sws_scale(conversion_ctx, frame->data, frame->linesize, 0, frame->height,&#xA;            sw_data, sw_linesize);&#xA;&#xA;        frame->format = AV_PIX_FMT_YUV420P;&#xA;        frame->width = width;&#xA;        frame->height = height;*/&#xA;&#xA;&#xA;        //encode to the video stream&#xA;        &#xA;        /* Compute current audio and video time. */&#xA;        video_time = std::chrono::system_clock::now() - start_time;&#xA;&#xA;        //write frame and send&#xA;    av_interleaved_write_frame(ofmt_ctx, &amp;pkt);&#xA;&#xA;        av_frame_unref(frame);&#xA;    }&#xA;&#xA;    av_write_trailer(ofmt_ctx);&#xA;</double>

  


• Cannot create SDL_Window giving SDL_Main.h error even though included

  27 février 2015, par user2270995

  I am trying to play network stream using FFMPEG(Fetching, decoding.etc) and trying to render it using SDL.

  When I run my Application it starts normally but as soon as I call OpenFile() which contains code for opening network stream and creating SDL_Window and then SDL_Renderer but it gives me a error on SDL_CreateWindow() saying :

  Window not created: [Application didn't initialize properly, did you include SDL_main.h in the file containing your main() function?].

  Even though I have included SDL_main.h.

  #include 
  
  #include 
  
  ..... //other header files
  
  
  
  #define  LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
  
  #define  LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
  
  
  
  SDL_Window *window;
  
  SDL_Renderer *renderer;
  
  
  
  int main(int argc, char *argv[])
  
  {
  
      if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER))
  
      {
  
        LOGE("Could not initialize SDL - %s\n", SDL_GetError());
  
        exit(1);
  
      }
  
      return 0;
  
   }
  
  
  
   void Java_com_my_app_MainActivity_openFile(JNIEnv * env, jobject this, jstring url)
  
   {
  
      ......
  
      ...... //FFMPEG code
  
  
  
    //---------------------------SDL part -------------------------//
  
  
  
    window = SDL_CreateWindow("Window", SDL_WINDOWPOS_UNDEFINED,
  
             SDL_WINDOWPOS_UNDEFINED, 0, 0,
  
             SDL_WINDOW_SHOWN | SDL_WINDOW_FULLSCREEN);
  
  
  
     if(window == NULL)
  
     {
  
         LOGE("Window not created: [%s]", SDL_GetError());
  
         return;
  
     }
  
     LOGE("Window created");
  
  
  
    renderer = SDL_CreateRenderer(window,-1,SDL_RENDERER_ACCELERATED | SDL_RENDERER_TARGETTEXTURE);
  
     if(renderer == NULL)
  
     {
  
         LOGE("renderer not created: [%s]", SDL_GetError());
  
         return;
  
     }
  
     LOGE("Rendering Created...");
  
  }

  Here’s code from another project i tried (following this tutorial) in which i do not in my MainActivity and i works fine

     #include 
  
     #include 
  
     #include 
  
  
  
     #include "SDL.h"
  
  
  
   typedef struct Sprite
  
   {
  
     SDL_Texture* texture;
  
     Uint16 w;
  
     Uint16 h;
  
   } Sprite;
  
  
  
  Sprite LoadSprite(const char* file, SDL_Renderer* renderer)
  
  {
  
      Sprite result;
  
      result.texture = NULL;
  
      result.w = 0;
  
      result.h = 0;
  
  
  
      SDL_Surface* temp;
  
  
  
      /* Load the sprite image */
  
      temp = SDL_LoadBMP(file);
  
      if (temp == NULL)
  
      {
  
          fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());
  
          return result;
  
      }
  
      result.w = temp->w;
  
      result.h = temp->h;
  
  
  
      /* Create texture from the image */
  
      result.texture = SDL_CreateTextureFromSurface(renderer, temp);
  
      if (!result.texture) {
  
          fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
  
          SDL_FreeSurface(temp);
  
          return result;
  
      }
  
      SDL_FreeSurface(temp);
  
  
  
      return result;
  
  }
  
  
  
  void draw(SDL_Window* window, SDL_Renderer* renderer, const Sprite sprite)
  
  {
  
      int w, h;
  
      SDL_GetWindowSize(window, &w, &h);
  
      SDL_Rect destRect = {w/2 - sprite.w/2, h/2 - sprite.h/2, sprite.w, sprite.h};
  
      /* Blit the sprite onto the screen */
  
      SDL_RenderCopy(renderer, sprite.texture, NULL, &destRect);
  
  }
  
  
  
  int main(int argc, char *argv[])
  
  {
  
      if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER))
  
      {
  
           fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
  
           exit(1);
  
      }
  
  
  
      SDL_Window *window;
  
      SDL_Renderer *renderer;
  
  
  
      if(SDL_CreateWindowAndRenderer(0, 0, 0, &window, &renderer) < 0)
  
          exit(2);
  
  
  
      Sprite sprite = LoadSprite("image.bmp", renderer);
  
      if(sprite.texture == NULL)
  
          exit(2);
  
  
  
      /* Main render loop */
  
      Uint8 done = 0;
  
      SDL_Event event;
  
      while(!done)
  
      {
  
          /* Check for events */
  
          while(SDL_PollEvent(&event))
  
          {
  
              if(event.type == SDL_QUIT || event.type == SDL_KEYDOWN )//|| event.type == SDL_FINGERDOWN)
  
              {
  
                  done = 1;
  
              }
  
          }
  
  
  
  
  
      /* Draw a gray background */
  
      SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
  
      SDL_RenderClear(renderer);
  
  
  
      draw(window, renderer, sprite);
  
  
  
      /* Update the screen! */
  
      SDL_RenderPresent(renderer);
  
  
  
      SDL_Delay(10);
  
  }
  
  
  
  exit(0);
  
  
  
  }

  Note : I created the first project (the one giving error) from this fine working project

  I have tried removing SDL_main.h’, using #undef main but none of it works. Now it has started giving me a error Saying 'java.lang.UnsatisfiedLinkError: Cannot load library: soinfo_relocate(linker.cpp:975): cannot locate symbol "SDL_main" referenced by "libmain.so"...

  My Android.mk

  LOCAL_PATH := $(call my-dir)
  
  
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE := ffmpeg
  
  LOCAL_SRC_FILES := $(TARGET_ARCH_ABI)/libffmpeg.so
  
  LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/$(TARGET_ARCH_ABI)/include
  
  include $(PREBUILT_SHARED_LIBRARY)
  
  
  
  
  
  include $(CLEAR_VARS)
  
  SDL_PATH := ../SDL
  
  MY_FILES_PATH := ../src
  
  LOCAL_MODULE    := main
  
  # Add your application source files here...
  
  LOCAL_SRC_FILES := $(SDL_PATH)/src/main/android/SDL_android_main.c \
  
                     $(patsubst $(LOCAL_PATH)/%, %, $(wildcard $(LOCAL_PATH)/src/*.c)) 
  
  
  
  LOCAL_C_INCLUDES := $(LOCAL_PATH)/$(SDL_PATH)/include
  
  LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -ljnigraphics -lGLESv1_CM -lGLESv2 -llog -lz -lm 
  
  LOCAL_ALLOW_UNDEFINED_SYMBOLS := true
  
  LOCAL_SHARED_LIBRARIES := SDL2
  
  LOCAL_SHARED_LIBRARIES += ffmpeg 
  
  include $(BUILD_SHARED_LIBRARY)