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
– llogan, Commented Apr 3, 2020 at 4:47

Romualdo Arrechea Hernández · Accepted Answer · 2020-04-07 13:52:29Z

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!!!

What if someone doesn't want transitions? Looking at the docs, defining one seems necessary (?!)
Or use 0 miliseconds in the duration on the transition's object
what if the user wants to keep the audio as it is for both the videos like stock concat the audio like the videos

Tboi · Accepted Answer · 2022-12-28 09:26:49Z

Use editly

npm i editly

Concat videos like this:

const clips = [ { layers: { type: "video", path: "path/to/clip1.mp4" } }, { layers: { type: "video", path: "path/to/clip2.mp4" } } ]; await editly({ keepSourceAudio: true, //to keep audio outPath: "./data/merged.mp4", clips: clips, //lot's of other great features });

(I've spent a long day on ffmpeg and other non-nodejs solutions as well,this one is fare the easiest solution, altho using ffmpeg directly might be faster)

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