Replacing hardcoded 'jpg' with asset's file ext (if exists)
PLAT-590 #time 2h
Merge branch 'IX-9.15.0-PLAT-590' into IX-9.19.0-PLAT-590
Merge pull request #1386 from kaltura/IX-9.19.0-PLAT-590

Ix 9.19.0 plat 590