The reason I posted that is because of the multitude of posts from users relating their “problems” with viewing 4k video files. Unlike you they immediately blame the camera, the ST-16, or some other part of an H without any thought their play back equipment could be at fault, which the majority of the time is the problem. From there they start looking for processing programs that provide for down grading video files for processing that will be “upgraded” later.
The true “problem” with 4k, or even 1080 video playback or video downloads if using old equipment or slow internet connections is a lack of understanding. There is often the situation where people think they can buy a UHD camera drone and without further investing in or understanding their other equipment will instantly produce great videos for them to show to the world. When that doesn’t work they blame the drone. Similar occurs when they damage flight batteries early in their life cycle.
Neither photography or drone operations are things that guarantee a neophyte great results the moment they pick up the equipment. Both demand the users develop knowledge and skills relative to the equipment being used, which includes the peripheral equipment employed to enable use of the primary tools. This is critically important with photography, where drone users demonstrate lack of knowledge by asking questions like which ND or CP filter they should buy, or why DNG photos are “flat” in color while JPG’s are more brilliant but low in resolution.
Skills are developed with practice but knowledge can be obtained long before the purchase of equipment. If people would invest some time and effort in learning before buying they would save themselves a lot of frustration, and for some a lot of money. Photography has never been easy or cheap and tossing drones and UHD video files into the ring increases the level of difficulty and expense. Obtaining an education relative to both photography and drones prior to buying equipment goes a long way towards reducing frustration and expense.