Recently , i faced a issue , while uploading image in dam , 3 renditions are created automatically for image because of ootb dam upload asset workflow , but in case of uploading video in 3 different formats i checked no rendition was created and author then need to upload separately thumbnail if he needs thumbnail in case of video , while i need that similarly to image thumbnail renditions to be created while uploading video which is also supported by that workflow as part of documentation , but not functioning in case of video upload and only functioning in case of image upload.
Kindly suggest what needs to be done .