make-xges error about bbb-render

[r4pt0r66]

Turns out somelines in my copy of download.py were malformed; have no idea how that happened:

for imgurl in {img.get('{http:# www.w3.org/1999/xlink}href') for img in doc.iterfind('.# {http:# www.w3.org/2000/svg}image')}:

should've been:
for imgurl in {img.get('{http://www.w3.org/1999/xlink}href') for img in doc.iterfind('.//{http://www.w3.org/2000/svg}image')}:

Then got this error with make-xges.py:
ERROR from element internal-encodebin: Couldn't create encoder for format audio/mpeg, mpegversion=(int)4, base-profile=(string)lc Debugging info: gstencodebin.c(1171): _post_missing_plugin_message (): /GESPipeline:gespipeline0/GstEncodeBin:internal-encodebin

Soved with:
sudo apt-get install gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav

Not sure if all of those packages are needed, but it did the trick.