Once you have actually created your content, the processes involved to actually deliver it over the various channels are very amenable to an outsourcing approach.
Format changes - changing content from Cellphone video, to High Definition Video, for Podcast, to streaming media etc. can all be done by an outsourcing vendor.
Other services which are available outsourced-
Metatagging of video for searching based on keywords and phrases
Archiving of older video/audio content
Digital Media / content delivery projects tend to have short timeframes - hence it is always better to deal with a company in the same timezone, if not in the same country.
As with any outsourcing project, ensure there are guarantees in places for the warranty on the items delivered, that Service Level Agreements (SLAs) are in place; and that the contracting company has the resources and competencies to do the work.