I fixed it.
I did not have my Premiere Pro and After Affects installed.
After Installing them, some engine must have kicked in, because now I no longer have any hangs at all initializing ANY video functions and/or rendering.
Running Windows 10.
Funny thing; after I reinstalled Premiere and After Effects, I played with them and no longer have a need to do video in Photoshop.
But it IS FIXED.
I have the same problem.
Mac OS 10.13.4
Photoshop 19.1.3 (installed immediately before I tried to render a video)
Initializing Video Export hangs at about 50%
Initializing Video Import hangs at about 50%
To me, that's not a fix. I haven't got the disk space available to go around installing additional software to "fix" a bug in my existing software.
I'd had the same issue (same Mac OS as well). I had no problems after updating Photoshop. I think this is a very recent update, since I had looked only a couple of days ago and everything had been up to date. Hope this helps you, too!
having the same issue. upgraded everything (software, OS), installed AE/Premiere, have them running in the background. nothing fixes it.
Same here. Stuck at 50%. I had to give up on photoshop for this part of my project
Same here. Tried everything in this thread. Just decided to use After Effects even though it was a simple animation that could've been done in Photoshop.