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• ffMpeg crashes on conversion from Powershell

  2 mars 2018, par Ahhhhhhhhhhhhhdfgbv

  I’m trying to create a Powershell that will loop through all the audio on a selected folder and add a jpg to the audio, outputting it as a video file.

  This is what I have so far :

  function mbAudioConvert {
  
      [Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") | Out-Null
  
      [System.Windows.Forms.Application]::EnableVisualStyles()
  
      $browse = New-Object System.Windows.Forms.FolderBrowserDialog
  
      $browse.SelectedPath = "B:\testaudio"
  
      $browse.ShowNewFolderButton = $false
  
      $browse.Description = "Select the folder with the audio"
  
  
  
      $loop = $true
  
      while( $loop ) {
  
          if( $browse.ShowDialog() -eq "OK" ) {
  
              $loop = $false
  
              $folder = $browse.SelectedPath
  
              $counter = 0001
  
              $image = (Get-Item -Path ".\lib\AudioOnly.jpg")
  
              $ffmpeg = (Get-Item -Path ".\lib\ffmpeg.exe")
  
  
  
              Foreach( $item in (ls $folder\* -Include *.mp3, *.MP3, *.wav, *.WAV, *.ogg, *.OGG) ) {
  
                  $ffstring = " -loop 1 -i $image -i $item -shortest -c:v dnxhd -b:v 120M -s 1920x1080 -pix_fmt yuv422p -r 25 -c:a pcm_s16le -ar 48000 $item.mov"
  
  
  
                  echo "$counter. $item"
  
                  Start-Process -FilePath $ffmpeg -ArgumentList $ffstring -Wait -PassThru;
  
                  $counter++
  
              }
  
          } else {
  
              return
  
          }
  
      }
  
  
  
      $browse.SelectedPath
  
      $browse.Dispose()
  
  }
  
  mbAudioConvert

  Which works, only after each convert, ffMpeg crashes. I’m not sure if its the FFmpeg.exe or the Powershell itself that is the issue - but I have been going crazy trying to debug this.

  

• Compressing video in flutter using ffmpeg

  30 octobre 2019, par kunaljosh369

  I want to compress video before uploaing i am already using FFmpeg in my project.Currently i am using below code but not working.

  var arguments = ["-i", file.path, "-c:v", "mpeg4", "file2.mp4"];
  
     _flutterFFmpeg
  
         .executeWithArguments(arguments)
  
         .then((rc) => print("FFmpeg process exited with rc $rc"));

• Video Trimming Using FFMPEG(ANDROID)

  16 juin 2016, par user3669034

  I am using Video Triming code for trim videos using FFMPEG. I used below code first, but the app crashed when I add second video.

  #include 
  
  #include "include/net_video_trimmer_natives_VideoTrimmer.h"
  
  #include "libswscale/swscale.h"
  
  #include "libavcodec/avcodec.h"
  
  #include "libavformat/avformat.h"
  
  #include "ffmpeg.h"
  
  #include 
  
  #include 
  
  #include <android></android>log.h>
  
  
  
  void log_message(char* message) {
  
      __android_log_write(ANDROID_LOG_ERROR, "VideoTrimmer", message);
  
  }
  
  
  
  void reverse(char s[])
  
   {
  
       int i, j;
  
       char c;
  
  
  
       for (i = 0, j = strlen(s)-1; i* itoa:  convert n to characters in s */
  
  void itoa(int n, char s[])
  
  {
  
      int i, sign;
  
  
  
      if ((sign = n) &lt; 0)  /* record sign */
  
          n = -n;          /* make n positive */
  
      i = 0;
  
      do {       /* generate digits in reverse order */
  
          s[i++] = n % 10 + '0';   /* get next digit */
  
      } while ((n /= 10) > 0);     /* delete it */
  
      if (sign &lt; 0)
  
          s[i++] = '-';
  
      s[i] = '\0';
  
      reverse(s);
  
  }
  
  
  
  JNIEXPORT jint JNICALL Java_net_video_trimmer_natives_VideoTrimmer_trim(JNIEnv *env,
  
          jclass someclass, jstring inputFile, jstring outFile, jint startTime,
  
          jint length) {
  
      log_message("Starting to cut");
  
  
  
      int numberOfArgs = 12;
  
      char** arguments = calloc(numberOfArgs, sizeof(char*));
  
      char start[5], duration[5];
  
      const char *in, *out;
  
      itoa(startTime, start);
  
      itoa(length, duration);
  
  
  
      in = (*env)->GetStringUTFChars(env, inputFile, 0);
  
      out = (*env)->GetStringUTFChars(env, outFile, 0);
  
  
  
      arguments[0] = "ffmpeg";
  
      arguments[1] = "-i";
  
      arguments[2] = in;
  
      arguments[3] = "-ss";
  
      arguments[4] = start;
  
      arguments[5] = "-t";
  
      arguments[6] = duration;
  
      arguments[7] = "-vcodec";
  
      arguments[8] = "copy";
  
      arguments[9] = "-acodec";
  
      arguments[10] = "copy";
  
  //  arguments[11] = "-strict";
  
  //  arguments[12] = "experimental";
  
  //  arguments[13] = "-ab";
  
  //  arguments[14] = "12k";
  
      arguments[11] = out;
  
  
  
      int i;
  
      for (i = 0; i &lt; numberOfArgs; i++) {
  
          log_message(arguments[i]);
  
      }
  
      log_message("Printed all");
  
  
  
      ffmpeg_main(numberOfArgs, arguments);
  
      log_message("Finished cutting");
  
      free(arguments);
  
      (*env)->ReleaseStringUTFChars(env, inputFile, in);
  
      (*env)->ReleaseStringUTFChars(env, outFile, out);
  
      return 0;
  
  }

  I searched over the internet for this problem and try to close it when the Trimming operation is done and add
  handle = dlopen("/data/data/my.package.com/lib/libffmpeg.so", RTLD_LAZY),
  ffmpeg_main= (func)dlsym(handle, "Java_net_video_trimmer_natives_VideoTrimmer_trim") ;
  dlclose(handle) ;
  But right now it doesn’t even make the first trim and crash when start to trimming.

  #include 
  
  #include "include/net_video_trimmer_natives_VideoTrimmer.h"
  
  #include "libswscale/swscale.h"
  
  #include "libavcodec/avcodec.h"
  
  #include "libavformat/avformat.h"
  
  #include "ffmpeg.h"
  
  #include 
  
  #include 
  
  #include <android></android>log.h>
  
  #include 
  
  void log_message(char* message) {
  
      __android_log_write(ANDROID_LOG_ERROR, "VideoTrimmer", message);
  
  }
  
  
  
  void reverse(char s[])
  
   {
  
       int i, j;
  
       char c;
  
  
  
       for (i = 0, j = strlen(s)-1; i* itoa:  convert n to characters in s */
  
  void itoa(int n, char s[])
  
  {
  
      int i, sign;
  
  
  
      if ((sign = n) &lt; 0)  /* record sign */
  
          n = -n;          /* make n positive */
  
      i = 0;
  
      do {       /* generate digits in reverse order */
  
          s[i++] = n % 10 + '0';   /* get next digit */
  
      } while ((n /= 10) > 0);     /* delete it */
  
      if (sign &lt; 0)
  
          s[i++] = '-';
  
      s[i] = '\0';
  
      reverse(s);
  
  }
  
  
  
  
  
  
  
  JNIEXPORT jint JNICALL Java_net_video_trimmer_natives_VideoTrimmer_trim(JNIEnv *env,
  
          jclass someclass, jstring inputFile, jstring outFile, jint startTime,
  
          jint length) {
  
  
  
  
  
  
  
  log_message("Starting to cut");
  
  void* handle;
  
  int (*ffmpeg_main)(int,char **); // define function prototype
  
  
  
  
  
  
  
      int numberOfArgs = 12;
  
      char** arguments = calloc(numberOfArgs, sizeof(char*));
  
      char start[5], duration[5];
  
      const char *in, *out;
  
      itoa(startTime, start);
  
      itoa(length, duration);
  
  
  
      in = (*env)->GetStringUTFChars(env, inputFile, 0);
  
      out = (*env)->GetStringUTFChars(env, outFile, 0);
  
  handle = dlopen("/data/data/package_name/lib/libffmpeg.so", RTLD_LAZY);
  
      arguments[0] = "ffmpeg";
  
      arguments[1] = "-i";
  
      arguments[2] = in;
  
      arguments[3] = "-ss";
  
      arguments[4] = start;
  
      arguments[5] = "-t";
  
      arguments[6] = duration;
  
      arguments[7] = "-vcodec";
  
      arguments[8] = "copy";
  
      arguments[9] = "-acodec";
  
      arguments[10] = "copy";
  
  //  arguments[11] = "-strict";
  
  //  arguments[12] = "experimental";
  
  //  arguments[13] = "-ab";
  
  //  arguments[14] = "12k";
  
      arguments[11] = out;
  
  
  
      int i;
  
      for (i = 0; i &lt; numberOfArgs; i++) {
  
          log_message(arguments[i]);
  
      }
  
      log_message("Printed all");
  
  
  
  
  
  
  
  
  
  
  
      (*env)->ReleaseStringUTFChars(env, inputFile, in);
  
      (*env)->ReleaseStringUTFChars(env, outFile, out);
  
  
  
  ffmpeg_main= dlsym(handle, "Java_net_video_trimmer_natives_VideoTrimmer_trim");  
  
  ffmpeg_main(numberOfArgs, arguments);
  
  
  
      log_message("Finished cutting");
  
  
  
  
  
  
  
  dlclose(handle);
  
  
  
  
  
  
  
  return 0;
  
  }

  Please help me with your advice and let me know where I have to change the code.
  Thanks