To be honestly, I am not really familiar with the Jomsocial where is the storage directory path for those photo/video and etc.
By the way, this is the following EasySocial storage directory path for store all those media file who upload into Easysocial.
Default storage path
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JoomlaFolder/media/com_easysocial/photos
JoomlaFolder/media/com_easysocial/avatars
JoomlaFolder/media/com_easysocial/videos
JoomlaFolder/media/com_easysocial/audios
JoomlaFolder/media/com_easysocial/comments
JoomlaFolder/media/com_easysocial/uploads/conversations
JoomlaFolder/media/com_easysocial/cache/links
JoomlaFolder/media/com_easysocial/files