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Using FFMPEG to concatenate files on Google Cloud Functions via NodeJS .. send it array of filenames and the extension type and it returns a promise that resolves to the final file with full path
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| const os = require("os"); | |
| const ffmpegPath = require("@ffmpeg-installer/ffmpeg").path; | |
| const fluent_ffmpeg = require("fluent-ffmpeg"); | |
| const ffprobePath = require('@ffprobe-installer/ffprobe').path; | |
| const path = require('path'); | |
| fluent_ffmpeg.setFfprobePath(ffprobePath); //this was key for me on GCF | |
| fluent_ffmpeg.setFfmpegPath(ffmpegPath); | |
| /** | |
| * | |
| * @param {Array} filearr array of file names with path | |
| * @param {String} fileType file extension | |
| */ | |
| function concatenate(filearr, fileType) { | |
| const tmpdir = os.tmpdir(); | |
| let mpeg = new fluent_ffmpeg(); | |
| let outFileName = path.join(tmpdir, 'finalFile.' + fileType); | |
| filearr.forEach(function (fileName) { | |
| mpeg.addInput(fileName); | |
| }); | |
| const promise = new Promise((resolve, reject) => { | |
| mpeg.mergeToFile(outFileName, tmpdir) | |
| .on('error', function (err, stdout, stderr) { | |
| console.log(err.message); | |
| console.log("stdout:\n" + stdout); | |
| console.log("stderr:\n" + stderr); | |
| reject; | |
| }) | |
| .on('end', function () { | |
| console.log('Finished concatenating!'); | |
| resolve(outFileName); | |
| }); | |
| }); | |
| return promise; | |
| } | |
| exports.concatenate = concatenate; |
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