Two separate issues making it literally impossible for me to get a problem free vertical h.264 export. The green line issue has been present for months and is a major major bug. Who even knows what is going on with the colours.
My only workaround is to export all affected clips from the 16x9 timeline, and replace all slowmo clips in the vertical timeline one at a time. Absolutely bonkers. I wouldn't usually make a video with my own voice on it but honestly this kind of stuff makes me extremely ma
/t5/premiere-pro-discussions/cannot-export-vertical-videos-without-issue/m-p/15591605#M574424Nov 14, 2025
Nov 14, 2025
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Hi there,
Sorry to hear about this. Are you still experiencing this issue? If so, please confirm the version of Premiere Pro & the OS you are using. Also, the uploaded video is unavailable. If possible, please upload it again to help us better understand & the issue.
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