Download of Videos is now possible. Minor styling changes.

forms/download.py

@@ -1,8 +1,9 @@
 from flask_wtf import FlaskForm
-from wtforms import URLField, SubmitField
-from wtforms.validators import URL, DataRequired
+from wtforms import URLField, SelectField, SubmitField
+from wtforms.validators import URL, DataRequired, AnyOf
 
 
 class DownloadForm(FlaskForm):
     url = URLField('Video, Channel or Playlist', validators=[DataRequired(), URL()], render_kw={'placeholder': 'YouTube Link'})
+    ext = SelectField('Type', choices=[('mp3', 'Audio'), ('mp4', 'Video')], validators=[AnyOf(('mp3', 'mp4'))])
     submit = SubmitField('Go')