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• Android ffmpeg just convert an image file to video file

  8 February 2018, by Mehmet Kurtgöz

  I want to make a sample video file into video for 30 seconds to show. But I can not do it because I’m not good enough with FFmpeg.

  My code :

   String command[]={
  
                      "-y",
  
                      "-r",
  
                      "1/5",
  
                      "-i",
  
                      src.getAbsolutePath(), // only one image file path
  
                      "-c:v",
  
                      "libx264",
  
                      "-vf",
  
                      "fps=25",
  
                      "-pix_fmt",
  
                      "yuv420p",
  
                      imagesvideoOutput
  
              };

• How to cut and concatenate the file so it is not off-beat when the file I got the bpm from is being muxed?

  27 January 2017, by P. Dee

  I am cutting files with ffmpeg based on the bpm I found in a music file. So let’s assume, the file’s bpm = 120. That means, there are 2 bps and 1 beat every 500ms.

  So I cut a video file with multiples of 500ms length, ie 500ms, 1500ms, 3000ms etc. length. But cutting it using

  ffmpeg -ss start -i fileorig.mp4 -t duration part_number.mp4

  and finally creating a mylist.txt with

  file 'part_1.mp4'
  
  file 'part_2.mp4'
  
  ...

  and adding them via

  ffmpeg -f concat -i mylist.txt -c copy output.mp4

  and replacing the audio track with the music file, makes the video be off-beat after some time.

  How to cut and concatenate the file so it is not off-beat when the file I got the bpm from is being muxed?

• Java JAR file runs on local machine but missing file on others

  22 April 2022, by john pear

  The JAR file consists of the ffmpeg.exe file and it can run normally on my machine without any problems. However, if I try to run it on another computer it would tell me that java.io.IOException: Cannot run program "ffmpeg.exe": CreateProcess error=2,The system cannot find the file specified from the stacktrace. The way I imported it was

  


  FFMpeg ffmpeg = new FFMpeg("ffmpeg.exe");  //in res folder

...
//ffmpeg class
public FFMPEG(String ffmepgEXE) {
    this.ffmepgEXE = ffmepgEXE;
}