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• Calling FFmpeg from C# hangs the Process

  18 octobre 2019, par Green Train

  I’m trying to run ffmpeg command in C# :

  processTrim = new Process();
  
  processTrim.StartInfo.FileName = $"{WorkingDirectory}/ffmpeg.exe";
  
  
  
  processTrim.StartInfo.WorkingDirectory = WorkingDirectory;
  
  processTrim.StartInfo.Arguments = string.Format(@"-i ""{0}"" -ss 1 -i ""{0}"" -c copy -map 1:0 -map 0 -shortest -f nut - | ffmpeg -f nut -i - -map 0 -map -0:0 -c copy ""{1}""", $"input.mp4", $"trimmed.mp4");
  
  
  
  processTrim.StartInfo.CreateNoWindow = false;
  
  processTrim.StartInfo.UseShellExecute = false;
  
  processTrim.EnableRaisingEvents = true;
  
  
  
  processTrim.Start();
  
  
  
  processTrim.WaitForExit(3000); // hangs here
  
  
  
  processTrim.Close();

  However, the process hangs at WaitForExit. This is the output from the process window (doesn’t go beyond handler_name) :

  

  When I run the command in Windows command prompt it works, why wouldn’t it work in C# Process ?

• How to convert image to video using fluent-ffmpeg in NodeJS

  2 juillet 2022, par MjM

  I would like to create a video using fluent-ffmpeg in NodeJS. My objective is to create a video using one image. And what I have done so far is the following :

  



  var express = require('express')
var router = express.Router()

const ffmpeg = require('fluent-ffmpeg');

router.get('/test', function (req, res) {
    // make sure you set the correct path to your video file
    var proc = ffmpeg('http://localhost:3000/images/image.jpg')

        // loop for 5 seconds
        .loop(5)
        // using 25 fps
        .fps(25)
        // setup event handlers
        .on('end', function () {
            console.log('file has been converted succesfully');
        })
        .on('error', function (err) {
            console.log('an error happened: ' + err.message);
            console.log(' error code is : ' + err.code);
        })
        // save to file
        .save('http://localhost:3000/video/image-cdo.mp4');
})

module.exports = router;


  



  When I run this I have been getting the following result with an error :

  



  GET /mixer/ 200 6.364 ms - 13
GET /images/image.jpg 206 3.355 ms - 311484
GET /images/image.jpg 206 4.041 ms - 311484
GET /images/image.jpg 206 3.509 ms - 311484
GET /images/image.jpg 206 1.225 ms - 311484
GET /images/image.jpg 206 0.742 ms - 311484
GET /images/image.jpg 206 0.655 ms - 311484
GET /images/image.jpg 206 0.695 ms - 311484
GET /images/image.jpg 206 0.691 ms - 311484
GET /images/image.jpg 206 0.676 ms - 311484
GET /images/image.jpg 206 0.648 ms - 311484
GET /images/image.jpg 206 0.663 ms - 311484
GET /images/image.jpg 206 0.886 ms - 311484
GET /images/image.jpg 206 0.598 ms - 311484
GET /images/image.jpg 206 0.532 ms - 311484
GET /images/image.jpg 206 0.547 ms - 311484
GET /images/image.jpg 206 0.630 ms - 311484
GET /images/image.jpg 206 0.560 ms - 311484
GET /images/image.jpg 206 0.536 ms - 311484
POST /video/image-cdo.mp4 404 30.270 ms - 1212


  



  


  an error happened : ffmpeg exited with code 1 : Could not write header
 for output file #0 (incorrect codec parameters ?) : Invalid argument
 Error initializing output stream 0:0 — 
 Conversion failed !

  



   error code is : undefined


  


  



  Can anyone help me out :)

  



  "dependencies": {
    "fluent-ffmpeg": "^2.1.2",
  }


  



  And NodeJS v12.13.0

  


• I need the script to work on all dav files

  4 décembre 2019, par audicom

  Script should run in recursive mode, find DAV files and start DAV to JPG conversions using FFMPEG. The script is working, identifying files in folders and starting conversions when DAV files exist, but is ignoring some DAV files.
  When I put these DAV files back in the folder it converts correctly.
  What could be wrong ?
  I thought it might be the speed of the process, since the files are being generated in the folder, the script must wait for the file to be closed and complete to act. I tried to delay the conversion process by 15 seconds using a PING, but it still skips some files.

  cd E:\VM01\1002
  
  MD "E:\COLETA SNAPSHOT\SNAPSHOT 1002"
  
  MD  "E:\COLETA SNAPSHOT\PROCESSED 1002" 
  
  
  
  :LOOP01  
  
  PING 1.1.1.1 -n 10 -w 6000 >NUL     
  
  For /R %%G in (*.Dav) do IF NOT EXIST "%%G" GOTO SKIP01
  
  
  
  :LOOP02
  
  PING 1.1.1.1 -n 10 -w 6000 >NUL    
  
  For /R %%G in (*.Dav) do IF EXIST "%%G" GOTO SKIP02
  
  REM ALL THIS WILL BE DONE IF THE DAV FILE EXISTS
  
  :
  
  :
  
  :SKIP01
  
  REM 6 SECONDS OF DELAY ...
  
  PING 1.1.1.1 -n 10 -w 6000 >NUL
  
  GOTO LOOP01
  
  :
  
  :
  
  :SKIP02
  
  REM START CONVERSION
  
  PING 1.1.1.1  -n 10 -w 15000 >NUL
  
  For /R %%G in (*.Dav) do IF EXIST "%%G" ffmpeg -i "%%G" -r 0.2 -bt 20M -s 480x300 "%%~nG"%%06d.jpg
  
  for /r %%G in (*.Dav) do Move "%%G" "E:\COLETA SNAPSHOT\PROCESSED 1002"
  
  Move "*.jpg" "E:\COLETA SNAPSHOT\SNAPSHOT 1002" 
  
  PING 1.1.1.1  -n 10 -w 3000 >NUL
  
  )
  
  GOTO LOOP01