Embedding album cover in MP4 file using Mutagen
<p>I'd like to be able to add album cover into the file using mutagen, however when I add it as a file it returns with:</p>

<blockquote>
<pre><code>File "D:\Download\pandora\renamingMETAEFF.pyw", line 71, in &lt;module&gt;
    meta['covr'] = image
File "C:\Users\AMD\AppData\Local\Programs\Python\Python35\lib\site-packages\mutagen\_file.py", line 67, in __setitem__
    self.tags[key] = value
File "C:\Users\AMD\AppData\Local\Programs\Python\Python35\lib\site-packages\mutagen\mp4\__init__.py", line 357, in __setitem__
    self._render(key, value)
File "C:\Users\AMD\AppData\Local\Programs\Python\Python35\lib\site-packages\mutagen\mp4\__init__.py", line 371, in _render
    return render_func(self, key, value)
File "C:\Users\AMD\AppData\Local\Programs\Python\Python35\lib\site-packages\mutagen\mp4\__init__.py", line 732, in __render_cover 
    b"data", struct.pack("&gt;2I", imageformat, 0) + cover))

TypeError: can't concat bytes to str
</code></pre>
</blockquote>

<p>The relevant piece of code is this:</p>

<pre><code>from mutagen.mp4 import MP4

image = jpgname + '.jpg'
meta['\xa9nam'] = song
meta['\xa9ART'] = artist
meta['\xa9alb'] = album
meta = MP4(songPath)
meta['covr'] = image
meta.save()
</code></pre>

<p>The rest of the metadata works perfectly fine, however the image part completely breaks the whole code.</p>