Support multiple BaseURL elements correctly

Created by: wilaw

Many universities (including Telecom ParisTech and UniKlu) are hosting a "Distributed DASH Dataset" (see [1]). The content in the data set uses multiple BaseURL elements so that a player can choose the server it prefers among the currently 7 registered servers. The DASH IF player weirdly concatenates the content of all BaseURL elements at the same level in the MPD to determine the location of the segments. An example MPD with multiple BaseURL elements is here [2] and the same without BaseURL (which works fine in v.0.2.5) is available here [3].

Feel free to forward to the appropriate person,

Cyril

[1] http://www-itec.uni-klu.ac.at/dash/?page_id=958 [2] http://download.tsi.telecom-paristech.fr/gpac/dataset/dash/mmsys13/redbull_10sec.mpd [3] http://download.tsi.telecom-paristech.fr/gpac/dataset/dash/mmsys13/redbull_10sec_nobaseurl.mpd