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• spdifenc : support ac3 core+eac3 dependent streams

  3 avril 2018, par Hendrik Leppkes

  spdifenc : support ac3 core+eac3 dependent streams
  Such streams are found on Blu-ray, and identified as EAC3 type in
  
  avformat, while the bitstream of the core stream is actually a pure AC3
  
  frame.
  Adjust the parsing accordingly, since AC3 frames always hold 6 blocks
  
  and the numblkscod syntax element is not present.
  

  • [DH] libavformat/spdifenc.c

• How to build latest ffmpeg for android-ffmpeg project on github

  9 février 2015, par user2927954

  I am working on https://github.com/guardianproject/android-ffmpeg project.
  In this project, it uses ffmpeg version 0.11.1.
  How can i build this project with the latest ffmpeg version ?

  I try to delete ffmpeg folder in this project. Checkout the latest ffmpeg version in url : [git ://git.videolan.org/ffmpeg.git]. After that, i ran command ./configure_make_everything.sh as normal but i got error :

      File to patch: 
  
  Skip this patch? [y] 
  
  Skipping patch.
  
  3 out of 3 hunks ignored
  
  patching file libavutil/arm/intmath.h
  
  Reversed (or previously applied) patch detected!  Skipping patch.
  
  3 out of 3 hunks ignored
  
  patching file configure
  
  Reversed (or previously applied) patch detected!  Skipping patch.
  
  1 out of 1 hunk ignored
  
  ~/workspace/android-ffmpeg/ffmpeg ~/workspace/android-ffmpeg ~/workspace/android-ffmpeg
  
  **ERROR: freetype2 not found**
  
  
  
  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solving the problem.
  
  ~/workspace/android-ffmpeg ~/workspace/android-ffmpeg
  
  ~/workspace/android-ffmpeg
  
  ~/workspace/android-ffmpeg ~/workspace/android-ffmpeg
  
  ~/workspace/android-ffmpeg/ffmpeg ~/workspace/android-ffmpeg ~/workspace/android-ffmpeg
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:53: /common.mak: No such file or directory
  
  Makefile:93: /libavutil/Makefile: No such file or directory
  
  Makefile:93: /library.mak: No such file or directory
  
  Makefile:95: /doc/Makefile: No such file or directory
  
  Makefile:178: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:53: /common.mak: No such file or directory
  
  Makefile:93: /libavutil/Makefile: No such file or directory
  
  Makefile:93: /library.mak: No such file or directory
  
  Makefile:95: /doc/Makefile: No such file or directory
  
  Makefile:178: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  ~/workspace/android-ffmpeg ~/workspace/android-ffmpeg
  
  ~/workspace/android-ffmpeg
  
  admin@ubuntu:~/workspace/android-ffmpeg$

  I got error : Freetype2 not found but if i build with the original ffmpeg include in this project, this error is not occur.

  How can i fix it ? Please help

• texture rendering issue on iOS using OpenGL ES in Unity project

  28 mars 2016, par Time1ess

  I’m working on a project, part of it is to streaming video to my iPhone, currently I use my laptop to create the video stream to my iPhone with ffmpeg.The stream code in shell is below :

  ffmpeg \
  
      -f avfoundation -i "1" -s 1280*720 -r 29.97 \
  
      -c:v mpeg2video -q:v 20 -pix_fmt yuv420p -g 1 -threads 4\
  
      -f mpegts udp://192.168.1.102:6666

  with this, I successfully create my video stream.

  In Unity, I want to decode the video stream to create a texture. After I have gone through with some ffmpeg tutorial and Unity tutorial(Since I’m new to both of them), I followed tutorials and created my link library. Some of these codes are below(ask me if more is needed) :

  In my library :

  buffer alloc :

  uint8_t *buffer;
  
  int buffer_size;
  
  buffer_size = avpicture_get_size(AV_PIX_FMT_RGBA, VIEW_WIDTH, VIEW_HEIGHT);
  
  
  
  buffer = (uint8_t *) av_malloc(buffer_size*sizeof(uint8_t));
  
  
  
  avpicture_fill((AVPicture *) pFrameRGB, buffer, AV_PIX_FMT_RGBA,
  
                 VIEW_WIDTH, VIEW_HEIGHT);

  getContext :

      is->sws_ctx = sws_getContext
  
      (
  
       is->video_st->codec->width,
  
       is->video_st->codec->height,
  
       is->video_st->codec->pix_fmt,
  
       VIEW_WIDTH,
  
       VIEW_HEIGHT,
  
       AV_PIX_FMT_RGBA,
  
       SWS_BILINEAR,
  
       NULL,
  
       NULL,
  
       NULL
  
       );

  sws_scale :

  sws_scale(
  
            is->sws_ctx,
  
            (uint8_t const * const *)pFrame->data,
  
            pFrame->linesize,
  
            0,
  
            is->video_st->codec->height,
  
            pFrameRGB->data,
  
            pFrameRGB->linesize
  
            );

  texture render :

  static void UNITY_INTERFACE_API OnRenderEvent(int texID)
  
  {
  
      GLuint gltex = (GLuint)(size_t)(texID);
  
  
  
      glBindTexture(GL_TEXTURE_2D, gltex);
  
  
  
      glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, VIEW_WIDTH, VIEW_HEIGHT,
  
                      GL_RGBA, GL_UNSIGNED_BYTE, pFrameRGB->data[0]);
  
  
  
      glGetError();
  
      return;
  
  }
  
  
  
  extern "C" UnityRenderingEvent UNITY_INTERFACE_EXPORT UNITY_INTERFACE_API GetRenderEventFunc()
  
  {
  
      return OnRenderEvent;
  
  }

  In Unity :

  texture created :

      private Texture2D texture;
  
      private int texID;
  
      texture = new Texture2D (width, height, TextureFormat.RGBA32, false);
  
      texture.filterMode = FilterMode.Point;
  
      texture.Apply ();
  
      GetComponent<renderer> ().material.mainTexture = texture;
  
      texID = texture.GetNativeTexturePtr ().ToInt32();
  
  </renderer>

  update func :

      void Update ()
  
      {
  
          GL.IssuePluginEvent(GetRenderEventFunc(), texID);
  
      }

  Video stream info :

  Input #0, mpegts, from 'udp://0.0.0.0:6666':
  
    Duration: N/A, start: 2.534467, bitrate: N/A
  
    Program 1 
  
      Metadata:
  
        service_name    : Service01
  
        service_provider: FFmpeg
  
      Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 1280x720 [SAR 1:1 DAR 16:9], max. 104857 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

  Leave other details, my library works fine on the Unity simulator, but when I compiled all my libraries for arm64 and used the xcode project that Unity created to build my app and ran it, I couldn’t get any texture rendered in my iPhone, I checkd my network and I’m sure that data had been sent to my iPhone and the Debug log showed me that frame has been successfully decoded also the OnRenderEvent func had been called.

  I’m confused and try to find answer on stackoverflow, maybe I’m a beginer cause I can’t find answers, so I ask you guys to help me plz.

  FYI :

  Unity 5.3.2f1 Personal

  Xcode 7.2.1

  iOS 9.2.1

  ffmpeg 3.0