Setting mp3 metadata

[pidgeonman]

I'm trying to set id3 tags (or whatever, let´s just say metadata) in an output mp3 file. I am using

ffMpegProc.addOutputOption('-metadata title="Stairway to heaven"');
ffMpegProc.addOutputOption('-metadata artist="Led Zeppelin"');

but on run it fails:

events.js:141
throw er; // Unhandled 'error' event
^

Error: ffmpeg exited with code 1: metadata artist="Led Zeppelin": Invalid argument

What am I doing wrong? Thanks!

[njoyard]

Use the separate flag/arg form: addOutputOption('-metadata', 'title="Stairway to Heaven"'). Automatic splitting of arguments by fluent-ffmpeg only happens when there is only one space.

[njoyard]

(and now I have stairway to heaven stuck in my head 🎸 )

[pidgeonman]

You should consider putting a sign http://ukeuniversity.net/wp-content/uploads/2014/11/IMG_0359.jpg

PS: Thanks for the answer!

[moshfeu]

A similar very strange problem:

When I have only 1 space it failing but if there are 0 or more than one, it doesn't fail:

Fail

var outputOptions = [
  "-id3v2_version", "4",
  "-metadata", "title=Summertime a",
  "-metadata", "artist=Seasick Steve"
];

new ffmpeg({
  source: stream.pipe(str)
})
.outputOptions(outputOptions)

Doesn't fail

var outputOptions = [
  "-id3v2_version", "4",
  "-metadata", "title=Summertime a",
  "-metadata", "artist=Seasick Steve"
];

new ffmpeg({
  source: stream.pipe(str)
})
.outputOptions(outputOptions)

@njoyard thoughts?

BTW, using addOutputOption instead of putting it in array, solve the problem.