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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 ?

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