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• Using ffmpeg with Visual Studio 2013 and C

  19 juin 2016, par user5000935

  I’m try
  main.c
  av_register_all() ;

  AVFormatContext *pFormatCtx = NULL;
  
  
  
  // Open video file
  
  if (avformat_open_input(&pFormatCtx, argv[1], NULL, NULL) != 0)
  
      return -1; // Couldn't open file
  
  
  
  if (avformat_find_stream_info(pFormatCtx, NULL) < 0)
  
      return -1; // Couldn't find stream information
  
  }

  • I’ve added the include (C :\ffmpeg\include) directory to my C/C++ > General > Additional Include Directories ;
  • I’ve added
    I’m using "Zeranoe FFmpeg Build Version : git-5911eeb (2015-10-08)". I tried both 32/64bits versions as said in another question here in SO.

  These are the errors I’m getting :

  Error   3   error C2143: syntax error : missing ';' before '{'  c:\ffmpeg\include\libavutil\error.h 110 1   FFMpeg Test
  
  Error   6   error C2143: syntax error : missing ';' before '{'  c:\ffmpeg\include\libavutil\mem.h   94  1   FFMpeg Test
  
  Error   9   error C2143: syntax error : missing ';' before '{'  c:\ffmpeg\include\libavutil\mem.h   229 1   FFMpeg Test
  
  Error   12  error C2143: syntax error : missing ';' before '{'  c:\ffmpeg\include\libavutil\mem.h   338 1   FFMpeg Test
  
  Error   15  error C2143: syntax error : missing ';' before '{'  c:\ffmpeg\include\libavutil\rational.h  54  1   FFMpeg Test
  
  Error   18  error C21in formal parameter list   c:\ffmpeg\include\libavutil\mem.h   338 1   FFMpeg Test
  
  Error   20  error C2085: 'av_q2d' : not in formal parameter list    c:\ffmpeg\include\libavutil\rational.h  80  1   FFMpeg Test
  
  Error   8   error C2085: 'av_mallocz_array' : not in formal parameter list  c:\ffmpeg\include\libavuormal parameter list    c:\ffmpeg\include\libavutil\rational.h  54  1   FFMpeg Test

• How to use prebuilt FFmpeg in Android Studio

  26 mai 2016, par vxh.viet

  I’m sure this is a very basic question but since this is the my first time messing around with the NDK, a lot of thing is still very unclear to me.

  Use case :

  • I’m trying to develop a video scrubbing feature so fast and accurate frame seeking is crucial. I’ve tried most of the available players out there but the performance is still not up to my demand. That’s why I’m going down the FFmpeg route.

  • Basically, what I’m looking for is FFmpeg input seeking. I’ve tried WrtingMinds’ ffmpeg-android-java. However it is a file based implementation which means the out.jpg need to be written to external memory and read back which has a big hit on performance (roughly 1000 milliseconds for 1 seek).

  • That’s why I’m trying to built my own FFmpeg player to do the input seeking in JNI and push back the byte[] to be displayed in Java.

  Question : After a lot of struggling with the NDK, I’ve managed to set it up and successfully calling the JNI method from my Java code. The structure is as below :

  MyApp
  
    -app
  
    -MyFFmpegPlayer
  
      -build
  
      -libs
  
      -src
  
        -main
  
          -java
  
            -com.example.myffmpegplayer
  
              +HelloJNI.java
  
          -jni
  
            +MyFFmpegPlayer.c

  After some fail attempt to build FFmpeg on Windows, I’ve decided to use WritingMinds prebuilt FFmpeg. However, after extraction they just come up as plain ffmpeg files (not .so file) so I don’t really know how to use these.

  It would be a great gratitude, if someone can just chime in and give me a good starting point for my next step.

  Thank you so much for your time.

• Android : How to configure FFMPEG latest version in android studio ?

  28 décembre 2016, par Ravi Vaghela

  I want to configure FFMPEG in android studio but i cant get any document or link for that. Github on many FFMPEG lib available for android but that all are with old version. And how to run command in android ? and i want to know after configure FFMPEG then how can we run FFMPEG commands. Help me for that. thanks advance.

  I have used below links but not success in for latest version.

  http://writingminds.github.io/ffmpeg-android-java

  https://github.com/WritingMinds/ffmpeg-android-java

  https://github.com/havlenapetr/FFMpeg

  https://github.com/appunite/AndroidFFmpeg

  https://github.com/WritingMinds/ffmpeg-android