You may also want to take a look at my latest software release, 'DPFeedMerge'. It was written to combine two or more Json feed files into one.
This means that Vimeo showcase users can combine multiple showcases into one feed file.
FREE Windows desktop software for converting Direct Publisher channels to SceneGraph (SDK), for creating
BIF (Trick Play) files,
Roku (MRSS, JSON) feed files, and
FireTV feed files @
GitHub/rrirower.