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• trying to merge 2 video command [duplicate]

  4 octobre 2019, par Vikram Dulgach

  This question already has an answer here :

  • FFmpeg - concat videos error, do not match the corresponding output link ?
    
    1 answer
    

  I am trying to merge 2 video one has audio and in 2nd video i am adding silent track. but everytime i am trying to merge them it shows me these error. I am using 2 command in both ti give me same erro.

  String [] merge2video={ "-i", video1,"-i", new video2,"-filter_complex", "[0:v]scale=1280x720,setpts=PTS-STARTPTS[v0];[1:v]scale=1280x720,setpts=PTS-STARTPTS[v1];[v0][0:a][v1][1:a]concat=n=2:v=1:a=1", "-map", "[v]", "-map", "[a]","-preset" ,"ultrafast" ,"-crf" ,"30", sharevideo};

  String [] merge2video= "-i", video1,"-i", new video2,"-filter_complex", "[0]setdar=16/9[a] ;[1]setdar=16/9[b] ; [a][b]concat=n=2:v=1:a=1", "-map", "[v]", "-map", "[a]","-preset" ,"ultrafast" ,"-crf" ,"30", sharevideo ;

  [swscaler @ 0xee692000] deprecated pixel format used, make sure you did set range correctly
  [Parsed_concat_4 @ 0xee9255f0] Input link in1:v0 parameters (size 1280x720, SAR 1647:1648) do not match the corresponding output link in0:v0 parameters (1280x720, SAR 1:1)
  [Parsed_concat_4 @ 0xee9255f0] Failed to configure output pad on Parsed_concat_4
  Error configuring complex filters.
  Invalid argument

  Help to solve there issue if anybody is there thanks in advance. and sorry for bad english

• How to write command in android when I m using FFmpeg Native with C++ file ?

  16 octobre 2019, par axita.savani

  Using FFmpeg lastest version ("Ada") with native code and write command in android .cpp file below it’s very simple function VideogetDuration() :

  #include 
  
  #include <string>
  
  #include <iostream>
  
  #include <android></android>log.h>
  
  #include 
  
  
  
  extern "C" {
  
  #include <libavutil></libavutil>timestamp.h>
  
  #include <libavformat></libavformat>avformat.h>
  
  #include <libavutil></libavutil>display.h>
  
  }
  
  
  
      /***
  
       *
  
       * @param input - the absolute path to file
  
       * @returns the duration of file in seconds
  
       *
  
       */
  
      extern "C"
  
      JNIEXPORT jint JNICALL
  
      Java_com_ffmpegjni_videoprocessinglibrary_VideoProcessing_getDuration(JNIEnv *env,
  
                                                                            jobject instance,
  
                                                                            jstring input_) {
  
          av_register_all();
  
          AVFormatContext *pFormatCtx = NULL;
  
          if (avformat_open_input(&amp;pFormatCtx, jStr2str(env, input_), NULL, NULL) &lt; 0) {
  
              throwException(env, "Could not open input file");
  
              return 0;
  
          }
  
  
  
  
  
          if (avformat_find_stream_info(pFormatCtx, NULL) &lt; 0) {
  
              throwException(env, "Failed to retrieve input stream information");
  
              return 0;
  
          }
  
  
  
          int64_t duration = pFormatCtx->duration;
  
  
  
  
  
          avformat_close_input(&amp;pFormatCtx);
  
          avformat_free_context(pFormatCtx);
  
          return (jint) (duration / AV_TIME_BASE);
  
      }
  
  </iostream></string>

  when this value returns 0 value either the wrong value.
  also i have read the below docs for more information.
  1)http://dranger.com/ffmpeg/data.html
  2)https://static.packt-cdn.com/downloads/Developing_Multimedia_Applications_with_NDK.pdf
  3)https://github.com/KucherenkoIhor/VideoProcessingLibrary (also see this project)
  4)https://github.com/leandromoreira/ffmpeg-libav-tutorial#video---what-you-see

  i have also add the same problem with below link :
  how to use libavcodec/ffmpeg to find duration of video file

• macOS compile FFMpeg as static standalone binary

  27 octobre 2019, par ColdSteel

  I am trying to compile ffmpeg for macOS (from macOS) as static binary for several days with no luck.
  Here is a script I am running to compile the FFmpeg binary

  cd /Users/$USER/ffmpeg/macOSBuild
  
  basePath=/macOSdependencies/DependenciesOutput
  
  
  
  export LD_LIBRARY_PATH="/Users/romanlevin/ffmpeg/macOSdependencies/DependenciesOutputbasePath/SDL2/lib/“
  
  
  
  ../configure --disable-autodetect --pkg-config-flags="--static" --extra-cflags="-I$basePath/SDL2/include/" --extra-ldflags="-L/Users/romanlevin/ffmpeg/macOSdependencies/DependenciesOutput/SDL2/lib/" --prefix=/usr/local --enable-gpl --enable-version3 --enable-sdl2 --enable-static --disable-shared
  
  
  
  make clean
  
  make -j8

  However it is always linking SDL2 as dynamic lib.

  Please note I have compiled the SDL2 by myself and put it in the directory I am trying to add to ld

  

  However I also have SDL2 installed with brew, but I don’t want to use it.
  I want Ffmpeg to pick compiled SDL2.

  It does looking for my Compiled library but only asdylib in a hardcoded path - which means I can’t get a portable binaries :(.

  Could some1 open my eyes on what am I doing wrong please ?