fluent-ffmpeg-util

Solve common problems you may encounter when using fluent-ffmpeg.

This package is recommended for projects which are already using fluent-ffmpeg, for new projects it
is advised to use eloquent-ffmpeg.

$3

You can use any number of output and input streams by using handleInputStream() or
handleOutputStream(), they return an object with the following shape:
- path: the output to give to fluent-ffmpeg.
- close(): closes the underlying server, this is dealt with automatically if no error occurs.
``

ts

var ffmpeg = require('fluent-ffmpeg');

var util = require('fluent-ffmpeg-util');

var fs = require('fs');

var input = util.handleInputStream(fs.createReadStream('input.webm'));

var output = util.handleOutputStream(fs.createReadStream('output.mkv'));

ffmpeg()

    .input(input.path)

    .output(output.path)

    .toFormat('matroska')

    .on('error', function () {

        input.close();

        output.close();

    })

    .run();





$3

To write the output file to multiple destinations use

tee()

, you can also pass streams directly to

it and they'll be handled using

handleOutputStream()

ts

var ffmpeg = require('fluent-ffmpeg');

var util = require('fluent-ffmpeg-util');

var fs = require('fs');

ffmpeg()

    .input('input.webm')

    .output(util.tee('output.mkv', fs.createReadStream('output1.mkv')))

    .toFormat('matroska')

    .run();





$3

To pause/resume a fluent-ffmpeg command use

pause() or resume()

, this is a cross-platform

alternative to using

command.kill('SIGSTOP') and command.kill('SIGCONT')

ts

var ffmpeg = require('fluent-ffmpeg');

var util = require('fluent-ffmpeg-util');

var fs = require('fs');

var command = ffmpeg()

    .input('input.webm')

    .output(util.tee('output.mkv', fs.createReadStream('output1.mkv')))

    .toFormat('matroska')

    .on('start', function () {

        if (util.pause(command))

            console.log('ffmpeg paused');

        if (util.resume(command))

            console.log('ffmpeg resumed');

    });

command.run();





$3

To gracefully interrupt a command in fluent-ffmpeg use

abort()

, it allows ffmpeg to end the files

correctly but it doesn't guarantee a non-zero exit code. FFmpeg may still encounter an error while

ending the files, so errors should still be handled.

ts

var ffmpeg = require('fluent-ffmpeg');

var util = require('fluent-ffmpeg-util');

var fs = require('fs');

var command = ffmpeg()

    .input('input.webm')

    .output(util.tee('output.mkv', fs.createReadStream('output1.mkv')))

    .toFormat('matroska')

    .on('start', function () {

        util.abort(command);

    });

command.run();