[Solved] iMovie Export Failed

[princev558]

I am not able to export my edited video. Any one tell me why I am facing this issue.
I have Gigabyte H310M S2 motherboard and I am using Radeon RX580 Graphic Card

 

[princev558]

Please help me with this issue. I need to edit my videos. I need Help

 

[Tom012]

I have the same Problem since updating to High Sierra.
iMovie and Final Cut cannot export to mp4 anymore.
Only exporting to ProRes mov is working.
But in that Mode the Files are much too big.
What is your Solution?

 

[princev558]

I have the same Problem since updating to High Sierra.
iMovie and Final Cut cannot export to mp4 anymore.
Only exporting to ProRes mov is working.
But in that Mode the Files are much too big.
What is your Solution?

you need to change system definition to iMac 19,1
follow this https://www.tonymacx86.com/threads/high-sierra-rx-vega-final-cut-h-264-fix.233067/

I fixed it by changing system definition to iMac 19,1