I read all the similar Discussion to this topic but this is diffrent. I have several Portrait videos and the work all fine on all apps and divices except since a while ago (unfortunatelly I cannot pin point an exact date) on my two Samsung which are both running Tizen 5 some are distorted and some are not . I analysed several files but I cannot make out what it triggers.
PS: I have not touched the 2 Samsung configurations in ages so that cannot be it.
@sLumpy I notice when the resolution is 340 x 720 the video is not distorted. When it is some thing odd like 410 x 716 it is distorted. Does that help?