cleanup in dash generated filenames for muxed inputs with no segment template
cleanup in dash generated filenames for muxed inputs with no segment template

gpac/gpac,porcelijn/gpac,gpac/gpac,gpac/gpac,porcelijn/gpac,porcelijn/gpac,RodolpheFouquet/gpac,RodolpheFouquet/gpac,rbouqueau/gpac,gpac/gpac,rbouqueau/gpac,rbouqueau/gpac,RodolpheFouquet/gpac,porcelijn/gpac,gpac/gpac,gpac/gpac,RodolpheFouquet/gpac,rbouqueau/gpac,porcelijn/gpac,rbouqueau/gpac,RodolpheFouquet/gpac,rbouqueau/gpac,gpac/gpac,porcelijn/gpac,rbouqueau/gpac,rbouqueau/gpac,RodolpheFouquet/gpac,gpac/gpac