Concatenate mp4 video files using ffmpeg on nodejs

Question

I'm trying to concatenate several videos using FFmpeg with Nodejs. I'm receiving the "No such file or directory" error. The written code is:

const glob = require("glob");

//store all the filenames with path to the videos
var inputVideos = glob.sync("/home/r/clips/*.mp4");
const output = "./output/output.mp4";

const util = require("util");
const exec = util.promisify(require("child_process").exec);

async function concatVideos(inputVideos, outputVideoPath) {
  

  //imported to get the name of videofile easily
  var path = require("path");

  //the next ffmpeger variable,will keep the lines
  //ffmpeg -i videofile1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate_videofile1.ts
  //ffmpeg -i videofile2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2_videofile2.ts

var ffmpeger = "";
  ffmpeger = inputVideos
    .map(
      video =>
        ` ffmpeg -i ${video} -c copy
    -bsf:v h264_mp4toannexb -f mpegts ./intermediate_${
      path.parse(video).name
    }.ts`
    )
    .join("\n");

  //concatenator keeps the segment
  //"concat:intermediate_videofile1.ts|intermediate_videofile2.ts"
  var concatenator = '"concat:';
  concatenator +=
    inputVideos
      .map(video => `./intermediate_${path.parse(video).name}.ts`)
      .join("|") + '"';

  await exec(
    `
    ${ffmpeger}
    ffmpeg -i ${concatenator} -c copy -bsf:a aac_adtstoasc ${outputVideoPath}`
  );
}
concatVideos(inputVideos, output);

and the error is

concat:./intermediate_0.ts|./intermediate_1.ts|./intermediate_2.ts|./intermediate_3.ts|./intermediate_4.ts|./intermediate_5.ts|./intermediate_6.ts|./intermediate_diegoortiz1399.ts|./intermediate_dog.ts|./intermediate_dogstify.ts|./intermediate_dylan50568.ts|./intermediate_gabrieleecorrea.ts|./intermediate_golden_leo.ts|./intermediate_helenapatiih.ts|./intermediate_kaiobreno2.ts|./intermediate_khancorso.ts|./intermediate_kitakaze_s_lili.ts|./intermediate_oliver45743.ts|./intermediate_pinkie_pets.ts|./intermediate_shibakoma.ts|./intermediate_thepetcollective.ts|./intermediate_tod_the_foxx.ts|./intermediate_userpub3y9m7kb.ts|./intermediate_warriorbulldogs.ts: No such file or directory```

So the command line would be:

ffmpeg -i videofile1.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate_videofile1.ts ffmpeg -i videofile2.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate_videofile2.ts ffmpeg -i "concat:intermediate_videofile1.ts|intermediate_videofile2.ts" -c copy -bsf:a aac_adtstoasc ./output/output.mp4

Could you help us? Many thanks. Truly.:>

Use the concat demuxer (documentation & wiki) instead of the concat protocol. You can avoid the temporary files with the concat demuxer. — llogan

Romualdo Arrechea Hernández Romualdo Arrechea Hernández · Accepted Answer · 2020-04-07T11:01:51

So, the solution I found is in https://www.npmjs.com/package/ffmpeg-concat.

First install:

npm i ffmpeg-concat

Then: To concatenate videos:

const concat = require('ffmpeg-concat')
const glob=require('glob')

//an array of video path to concatenate
const videos=glob.sync('/home/username/Downloads/clips/*.mp4')

const output='./output/concatenated.mp4'

//a function to merge an array of videos with custom music
//and a transition fadegrayscale of 500ms duration between videos.
async function oneTransitionMergeVideos(){
  await concat({
   output,
   videos,
   audio:"/home/username/Downloads/music/music.m4a",
   transition: {
     name:"fadegrayscale",
     duration: 500
   }
})
}

oneTransitionMergeVideos()

It will concatenate a video, with audio, and transitions. Wohooo!!!

Concatenate mp4 video files using ffmpeg on nodejs

1 Answers