The video you uploaded looks great.
I successfully uploaded the 28 minute video, but it is still processing on YouTube.
I may try and upload it again.
I tried to take a 3hr 16 minute videos, but it put my camera into an unbootable state, showing only a triangle with an exclamation point in the center.
I was able to boot it again with
adb shell
reboot bootloader
I’m not sure what the command actually did, but the Z1 is working again and I’m going to try a 60 minute video recording this time. I’m 50 minutes into the new test.