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• How to trim and merge using Fluent FFMpeg ?

  29 juillet 2016, par John D.

  Here’s what I want to do with fluent-ffmpeg :

  I have 3 input files. An intro, main, and outro video. I wish to merge the three, while trimming the main video. Here is my code :

  var ffmpegCommand = ffmpeg();
  
  ffmpegCommand.addInput(introVideo);
  
  ffmpegCommand.addInput(mainVideo).seekInput(20).duration(3);
  
  ffmpegCommand.addInput(outroVideo);
  
  ffmpegCommand.on('error', function(err, stdout, stderr){
  
    console.log("FAILED!\n\t"+err+"\n\t"+stdout+"\n\t"+stderr);
  
  });
  
  ffmpegCommand.on('end', function(){
  
    console.log('COMPLETE!');
  
  });
  
  ffmpegCommand.on('start', function(commandLine) {
  
    console.log('Spawned Ffmpeg with command: ' + commandLine);
  
  });
  
  ffmpegCommand.mergeToFile('final.mp4', './vid_files/tmp');

  The program executes fine, but when I ffplay final.mp4, the result is that introVideo plays then the video appears to freeze. According to the fluent-ffmpeg documentation, it states "Each of these [Input options] methods apply on the last input added". So I can’t figure out why that syntax doesn’t seem to work...

  How can I trim the main video to send to mergeToFile ?

  Note that this works fine if I don’t have .seekinput(20).duration(3) on the second addInput.

  Oh, here’s the outputted commandLine value :

  ffmpeg -i ./vid_files/intro.mp4 -ss 20 -i ./vid_files/main.mp4 -i ./vid_files/outro.mp4 -y -filter_complex concat=n=3:v=1:a=1 -t 3 final.mp4

• Can't write video using moviepy. output format error

  23 décembre 2022, par Ronnie Kisor

  I'm trying to concatenate videos in each folder so that I get one video in each folder instead of multiple short ones. This is an external USB drive if that matters.

  


  My code seems to iterate over the files as expected, but I keep getting this error after the audio is written, during the "writing video" action, I believe : b"[NULL @ 000002a8340ae640] Unable to find a suitable output format for 'D:\\taxes\\folder\\test'\r\nD:\\taxes\\folder\\test: Invalid argument\r\n"

  


  I haven't found a way to force an output format yet. Any thoughts ?

  


  import os
from moviepy.editor import *

startingDir = r'D:\taxes'

avoid = ['0incomplete', 'old', 'that', 'this']

for thing in os.listdir(startingDir):
    clips = []
    name = ''
    
    if thing in avoid:
        print('                              avoided {}'.format(thing))
        continue

    folder = os.path.join(startingDir, thing)

    if os.path.isdir(folder):
        for clip in os.listdir(folder):
            print (clip)
            clips.append(VideoFileClip(os.path.join(folder, clip)))
        print('\n')

        try:
            final = concatenate_videoclips(clips)
            final.write_videofile(os.path.join(folder, 'test'), audio=True, codec='libx264', threads=10)
            final.close() 
        except Exception as e:
            print (e)
            print('\n Continuing... \n\n')
            continue


  


• ffmpeg ProcessBuilder No such file or directory

  24 avril 2020, par silentsudo

  I am trying to get media duration using ffmpeg command from a java program. I am calling this method from within spring boot application.
I am using ProcessBuilder.

  



  File object is valid and exists for privacy I have replaced file path in error logs.

  



  My Code is as below :

  



  private String getMediaDuration(File file) {
        final String command = "/usr/bin/ffmpeg -version";//-i " + file.getAbsolutePath() + " 2>&1 | grep Duration | cut -c 13-20";
        try {
            ProcessBuilder builder = new ProcessBuilder("/usr/bin/ffmpeg",
                    "-version");
            builder.directory(file.getParentFile());

            System.out.println("Directory : " + builder.directory().exists());
            System.out.println("Directory : " + builder.directory().getAbsolutePath());
            final Process process = builder.start();
            final InputStream is = process.getInputStream();
            final InputStreamReader isr = new InputStreamReader(is);
            final BufferedReader br = new BufferedReader(isr);
            String line;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
            }
            return line;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }


  



  Unfortunately nothing seems to be working
Error below :

  



  java.io.IOException: Cannot run program "/usr/bin/ffmpeg -version" (in directory "/abc/xyz"): error=2, No such file or directory&#xA;    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)&#xA;    at ....getMediaDuration(FFmpegRunner.java:208)&#xA;    at ....ffmpegprocessor.FFmpegRunner.run(FFmpegRunner.java:61)&#xA;    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)&#xA;    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)&#xA;    at java.lang.Thread.run(Thread.java:748)&#xA;Caused by: java.io.IOException: error=2, No such file or directory&#xA;    at java.lang.UNIXProcess.forkAndExec(Native Method)&#xA;    at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)&#xA;    at java.lang.ProcessImpl.start(ProcessImpl.java:134)&#xA;    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)&#xA;    ... 5 more&#xA;</init>

  



  Output for whereis ffmpeg

  



  ffmpeg: /usr/bin/ffmpeg /usr/share/ffmpeg /usr/share/man/man1/ffmpeg.1.gz


  



  Please help me understand where it is going wrong. Thank you.