CODEWITHSUNDEEP
node.jsfirebaseffmpegfirebase-storagefluent-ffmpeg
Peter
Peter

Reputation: 5342

ENOENT Error in Node When Calling Ffmpeg binary from Fluent-Ffmpeg Api

Background

I am wiring up a firebase function in node. Purpose is to parse an inbound audio clip to a set length. Using ffmpeg and fluent-ffmpeg.

Problem

When the function is triggered in firebase, I am getting ENOENT error when Fluent-Ffmpeg attempts to access the Ffmpeg binary

Firebase Debug Output

Error: { Error: spawn ./Cloud/functions/node_modules/ffmpeg-binaries/bin/ffmpeg ENOENT at exports._errnoException (util.js:1018:11) at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32) at onErrorNT (internal/child_process.js:367:16) at _combinedTickCallback (internal/process/next_tick.js:80:11) at process._tickDomainCallback (internal/process/next_tick.js:128:9) code: 'ENOENT', errno: 'ENOENT', syscall: 'spawn ./Cloud/functions/node_modules/ffmpeg-binaries/bin/ffmpeg', path: './Cloud/functions/node_modules/ffmpeg-binaries/bin/ffmpeg',
spawnargs: [ '-formats' ] }

Expected Outcome

Inbound file is downloaded to a temp directory, cropped, and re-uploaded to firebase storage as the cropped file.

Environment

Code [Updated To Reflect Svenskunganka's Change. Now Works]

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

exports.generatePreviewClip = functions.storage.object('audioFiles').onChange(event => {

      //console.log('Times this function has run: ', run++);

      const object = event.data; // The Storage object.
      const fileBucket = object.bucket; // The Storage bucket that contains the file.
      const filePath = object.name; // File path in the bucket.
      const contentType = object.contentType; // File content type.
      const resourceState = object.resourceState; // The resourceState is 'exists' or 'not_exists' (for file/folder deletions).
      const metageneration = object.metageneration; // Number of times metadata has been generated. New objects have a value of 1.

      // Exit if this is triggered on a file that is not an audio file.
      if (!contentType.startsWith('audio/')) {
        console.log('This is not an audio file.');
        console.log('This is the file:', filePath);
        return;
      }

      // Get the file name.
      const fileName = path.basename(filePath);
      console.log('Working with filename', fileName);
      // Exit if the file is already an audio clip.
      if (fileName.startsWith(PREVIEW_PREFIX)) {
        console.log('Already a preview clip.');
        return;
      }

      // Exit if this is a move or deletion event.
      if (event.data.resourceState === 'not_exists') {
        console.log('This is a deletion event.');
        return;
      }

      // Exit if file exists but is not new and is only being triggered
      // because of a metadata change.
      if (resourceState === 'exists' && metageneration > 1) {
        console.log('This is a metadata change event.');
        return;
      }

      // Download file from bucket.

      const bucket = gcs.bucket(fileBucket);
      const tempFilePath = path.join(os.tmpdir(), fileName);
      return bucket.file(filePath).download({
        destination: tempFilePath
      }).then(() => {

        console.log('Audio file downloaded locally to temp directory', tempFilePath);

    var ffmpegPath = require("ffmpeg-binaries").ffmpegPath();
    var ffprobePath = require("ffmpeg-binaries").ffprobePath();

    // Generate a croped file using ffmpeg.
    var command = new ffmpeg(tempFilePath);
        command.setFfmpegPath(ffmpegPath);
        command.setFfprobePath(ffprobePath);

        command
              .setStartTime('00:00:03')
              .setDuration('10')
              .output(tempFilePath)
              .on('end', function() {
                    console.log('Audio Crop Done Successfully');
               })
               .on('error', function(err)
               {
                  console.log('Error:', err);
               }).run();

              }).then(() => {
        console.log('Preview file created at', tempFilePath);
        // We add a 'preview_' prefix to the audio file name. that's how it will appear in firebase.
        const previewFileName = PREVIEW_PREFIX + fileName;
        console.log('previewFileName is', previewFileName)
        const previewFilePath = path.join(path.dirname(filePath), previewFileName);
        console.log('previewFilePath is', previewFilePath);
        // Uploading the preview file.
        return bucket.upload(tempFilePath, {destination: previewFilePath});
      // Once the file has been uploaded delete the local file to free up disk space.
      }).then(() => fs.unlinkSync(tempFilePath));

      // [END audio file generation]

    });

Contents and Structure of my ffmpeg-binaries/bin Directory

-rwxrwxrwx  1 sherpa  staff    24M Dec 10  2016 ffmpeg
-rwxr--r--  1 sherpa  staff    35M Jan 12  2017 ffmpeg.exe
-rwxr--r--  1 sherpa  staff    35M Jan 12  2017 ffplay.exe
-rwxrwxrwx  1 sherpa  staff    24M Dec 10  2016 ffprobe
-rwxr--r--  1 sherpa  staff    35M Jan 12  2017 ffprobe.exe
-rwxrwxrwx  1 sherpa  staff    22M Dec 10  2016 ffserver

Things I Have Tried

Thanks for any suggestions.

Upvotes: 5

Views: 6011

Answers (1)

Sven
Sven

Reputation: 5265

We solved the issue in the comments for the question, but I'll post an answer for any future users that might have the same issue. The problem is that the path supplied to the setFfmpegPath() method was relative, and should instead be absolute. ffmpeg-binaries module exports a couple helper-functions you can call to get the paths to its binaries:

var ffmpeg = require("fluent-ffmpeg")
var ffmpegPath = require("ffmpeg-binaries")

ffmpeg
  .setFfmpegPath(ffmpegPath)
  ...

Make sure you have ffmpeg-binaries installed with npm i -S ffmpeg-binaries.

Update 7th Nov 2018:

The ffmpeg-binaries package released a new breaking change in version 4.0.0 which removed all functions it exported, and instead just exports a string pointing to the directory ffmpeg is located. This was changed in commit 009e4d5.
I've updated the answer to reflect these changes.

Upvotes: 0

Related Questions