gstreamer ingest example: pep8ify
gstreamer ingest example: pep8ify

* Reformat multiline strings
* Reformat argument lists
* Reformat list literals
* Two newlines before functions
* Fix free functions taking `self`

voc/voctomix,voc/voctomix,h01ger/voctomix,h01ger/voctomix