Fix multi track proxy creation
The actual fix is: https://github.com/pitivi/gst-transcoder/commit/96b5f958b2d7905e26cb18833e04be3d57667c16 this patch is just to make sure that commit is used.
The actual fix is: https://github.com/pitivi/gst-transcoder/commit/96b5f958b2d7905e26cb18833e04be3d57667c16 this patch is just to make sure that commit is used.