Yes... if you have the latest version... this may be causing the issue??
This really isn't good insight. There are 10s of thousands, if not 100s of thousands running on the current version of software without issues. The problem is that the descriptions you offer doesn't really provide enough detail yet...so some might just grasp at straws. People will try to help you though...it just make take some more detail. I'm guessing English isn't your first language...no harm in fully describing your issue in your native language. Pretty good chances someone can respond in kind.
Baring that...if video is immediately causing a RTH scenario, it is likely your phone, or your cable, or your controller. Prior to trying a new display device, try replacing your cable (video communication is much more intensive then photo). A bad cable can create many issues, and they will show more readily during video.
If you are in a hot location...try cooling your display device. Many unsupported and some supported devices overheat quickly...causing lag issues (although I've not seen disconnect issues). Video processing is more intensive, hence more heat producing. And yes, it affects your device, because although he video is stored on the Phantoms memory card, a low res copy is stored on your phone. Next turn on/off hardware decode. Place a wet paper towel under your device...if the disconnect is delayed, it may be a heat issue. (It'll help us if you specify your current display device).
Also just as housekeeping suggestions, ensure you've turned off your wifi, and close all applications on your display device. There may be more suggestions when you tell us what display device OS versions you're using.
Give us the details of your phone, your cable, and exact messages you see when you try the above, and we might be able to help you narrow it down.