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
- mac client / firebase storage
- node v8.1.0
- ffmpeg v3.2.2
- fluent-ffmpeg v2.1.2
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
- I can execute ffmpeg from the command line
- sudo chmod -R u+x ffmpeg-binaries/
- ffmpeg set in global path
- used ffmpeg.exe binary in setFfmpegPath, got same result
- Error: { Error: spawn ./Cloud/functions/node_modules/ffmpeg-binaries/bin/ffmpeg.exe ENOENT
- played with numerous different setFfmpegPath path structures, e.g:
- ./Cloud/functions/node_modules/ffmpeg-binaries/bin/ffmpeg
- node_modules/ffmpeg-binaries/bin/ffmpeg
- ./Cloud/functions/node_modules/ffmpeg-binaries/bin/
Thanks for any suggestions.
