Unable to view / edit XAVC HS 8K video in Photoshop

[photogal11]

I was dismayed to find that Photoshop CC (nor any other app I tried) could not open my mp4 video files (XAVC HS 8K) created by my new Sony Alpha1 camera. The error I get is:

It appears that it needs an HEVC codec, which I didn't have, so I went to the Microsoft website and tried to download it but got stuck in associating the codec with a default app when it did not let me choose PS. 

I was also unable to open it in Adobe Acrobat Reader:

I was also unable to open it in Windows Media Player:

Windows Media Player Version 12.0.19041.1110

Quick Time Player gave an error message as well:

My PC Specs:

Operating System	Windows 10 Home 64-bit
CPU	Intel Core i9 @ 3.60GHz
	Kaby Lake 14nm Technology
RAM	32.0GB
Motherboard	ASUSTeK COMPUTER INC. ROG STRIX Z390-E GAMING (LGA1151)
Graphics	ASUS VG289 (3840x2160@60Hz)
	3071MB NVIDIA GeForce GTX 1080 Ti (ASUStek Computer Inc)
Storage	931GB Samsung SSD 980 PRO 1TB (Unknown (SSD))
	1863GB Samsung SSD 980 PRO 2TB (Unknown (SSD))
	465GB Samsung SSD 860 EVO 500GB (SATA (SSD))
	14904GB Intel Raid 0 Volume (RAID )
Optical Drives	ASUS SDRW-08U9M-U USB Device
Audio	NVIDIA High Definition Audio

Any idea how to be able to view and edit these videos in PS CC?

Thanks,

Janet

[ceyhun_akgun]

Can you try converting your video file to H264?

[photogal11]

Would you point me to something that would tell me how to do this?  Thanks.