From a Python program, you can embed youtube-dl in a more powerful fashion, like this:
```python
+from __future__ import unicode_literals
import youtube_dl
ydl_opts = {}
Here's a more complete example of a program that outputs only errors (and a short message after the download is finished), and downloads/converts the video to an mp3 file:
```python
+from __future__ import unicode_literals
import youtube_dl