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• Execute mp4box cmd via java got error

  6 novembre 2015, par Ducthien

  sorry when I tag ffmpeg because I couldn’t tag MP4Box.But I have proplem with excuted with ffmpeg via javacode too.
  I read at How to execute cmd commands via Java but i can’t find my proplem.

  I’m tested commands in cmd, it was ok :

  MP4Box -dash 10000 -dash-profile live -segment-name output- seg -rap
  -bs-switching no input.mp4

  but when i executed cmd via java code , i get error :

  Error - only one input file found as argument, please check usage

  Below is my code, has something wrong ?

  package com.uit.reformatvideo;
  
  
  
  import java.io.BufferedReader;
  
  import java.io.IOException;
  
  import java.io.InputStreamReader;
  
  import java.util.logging.Logger;
  
  
  
  public class ExecuteComandToFormatVideo {
  
  
  
      public final static String LINK_MP4BOX = "C:/MP4Box/Tools/MP4Box.exe";
  
      public final static String CREATE_MPD_ECLIPSE = "mp4box -dash 10000 -frag 1000 -rap -bs-switching no";
  
      public final static String CREATE_MPD_IE = "MP4Box -dash 10000 -dash-profile live -segment-name output-seg -rap -bs-switching no";
  
      private static final Logger log = Logger.getLogger(ExecuteComandToFormatVideo.class.getName());
  
  
  
  
  
      public static void main(String[] args) throws IOException, InterruptedException {
  
            String s = null;
  
  
  
              try {
  
  
  
              // run the Unix "ps -ef" command
  
                  // using the Runtime exec method:
  
                  String lsCmd[] = new String [2];
  
                  lsCmd[0] = LINK_MP4BOX;
  
                  lsCmd[1] = "MP4Box -dash 10000 -dash-profile live -segment-name output-seg -rap -bs-switching no input.mp4";
  
                  Process p = Runtime.getRuntime().exec(lsCmd);
  
                  p.waitFor();
  
                  BufferedReader stdInput = new BufferedReader(new
  
                       InputStreamReader(p.getInputStream()));
  
  
  
                  BufferedReader stdError = new BufferedReader(new
  
                       InputStreamReader(p.getErrorStream()));
  
  
  
                  // read the output from the command
  
                  System.out.println("Here is the standard output of the command:\n");
  
                  while ((s = stdInput.readLine()) != null) {
  
                      System.out.println(s);
  
                  }
  
  
  
                  // read any errors from the attempted command
  
                  System.out.println("Here is the standard error of the command (if any):\n");
  
                  while ((s = stdError.readLine()) != null) {
  
                      System.out.println(s);
  
                  }
  
  
  
                  System.exit(0);
  
              }
  
              catch (IOException e) {
  
                  System.out.println("exception happened - here's what I know: ");
  
                  e.printStackTrace();
  
                  System.exit(-1);
  
              }
  
      }
  
  
  
  }

  Here was out put :

  Here is the standard output of the command :

  Here is the standarderror of the command (if any) : Error - only one
  input file found as argument, please check usage

• How to manually reset the offset of an mp4 video created from m4s files ?

  12 août 2020, par natdev

  I'm building a service that combine .m4s files (from a dash stream) to a mp4 video.
  
I have some sample m4s files from a random point in time of a stream,
  
using ffmpeg on those file + the init file does the job.

  


  cat init.mp4 032.m4s 033.m4s 034.m4s > output.mp4


  


  I have tried concating the m4s files to the mp4 init file and I manage to play the video,
  
but there is an offset from the encoded video segments.

  


  I guess ffmpeg does reset that somehow, and I was wondering how can I reset that offset as well ?
  
Having a little bit of experience with dash, I know that there is a field name presentationTimeOffset that is responsible to set the offset.

  


• when i use ffmpeg get : HTTP error 403 Forbidden

  29 avril 2021, par Michael M1G0A4W

  i entered this :

  


  C:\Users\Michael\Desktop>ffmpeg -i "C:\Users\Michael\Desktop\1.mp4" -i "C:\Users\Michael\Desktop\1.m4a" -c copy "C:\Users\Michael\Desktop\2.mp4"


  


  But the output I received was for the URL input while I was giving the address from my computer.

  


  But the output :

  


  [https @ 00000205778cdec0] HTTP error 403 Forbidden
[dash @ 00000205777be8c0] Failed to open an initialization section
[dash @ 00000205777be8c0] Error when loading first fragment of playlist
C:\Users\Michael\Desktop\1.mp4: Server returned 403 Forbidden (access denied)


  


  At first I thought the problem was with the name or address, but after a test I realized that this is not the case