Node-fluent-ffmpeg: Write Metadata

[anasqadrei]

I'm trying to set some metadata using output options but I'm running into some issues.

In shell, I do it like this:
ffmpeg -i input.mp3 -y -codec copy -metadata title="song x" output.mp3
It works fine and in iTunes, the title is song x

Now, with node-fluent-ffmpeg:

ffmpeg('input.mp3')
      .outputOptions('-codec copy')
      .outputOptions('-metadata title="song x"')
      .save('output.mp3')
      .on('start', function(cmdline) {
        console.log('Command line: ' + cmdline);
      })

In console I get this command line:
ffmpeg -i input.mp3 -y -codec copy -metadata title="song x" output.mp3
which works fine on shell, but I get this error in node:

ffmpeg exited with code 1: Unrecognized option \'metadata title="song x"\'.\nError splitting the argument list: Option not found\n',
  stack: 'Error: ffmpeg exited with code 1: Unrecognized option \'metadata title="song x"\'.\nError splitting the argument list: Option not found\n\n    at ChildProcess.<anonymous> (/path/to/node_project/node_modules/fluent-ffmpeg/lib/processor.js:167:22)\n    at ChildProcess.EventEmitter.emit (events.js:98:17)\n    at Process.ChildProcess._handle.onexit (child_process.js:797:12)

If I remove the space in the metadata like this:

ffmpeg('input.mp3')
      .outputOptions('-codec copy')
      .outputOptions('-metadata title="songx"')
      .save('output.mp3')
      .on('start', function(cmdline) {
        console.log('Command line: ' + cmdline);
      })

It works without error, but in iTunes I get the title as "songx" with quotes instead of just songx

So there are two issues:

• Spaces in metadata cause errors
• Quotes are not well handled

[njoyard]

I don't think there's an issue with quotes here. outputOptions and similar methods support the "-option parameter" syntax for simple cases, but for more complex cases (ie. spaces in parameters) you should pass them separately:

ffmpeg('input.mp3')
   .outputOptions('-metadata', 'title="song x"');

Tell me if you still have problems with this syntax.

[anasqadrei]

Yup that solved the spaces problem.
For the quotes, I just omitted them .outputOptions('-metadata', 'title=song x')

Thanks for the help :)