@IanB_360 Thanks again for following up. I was a little confused by your last question, so I'm going to try to clarify my issue. You said: "And what you are saying is that the Export out of a 30 fps sequence on a 30 fps clip will result in an export that when brought back in to Premiere does not match the timecode of that same sequence you exported the file from?" And that is exactly correct. The problem is only for 30fps ProRes Exports out of Premiere. It does not matter what the frame rate of the source file is. I can bring a 30 fps clip into my project or a 23.976fps clip into my project... If I export from a 30fps timeline and re-import that export into Premiere, the TC will appear wrong. The problem does NOT occur in a 23.976 timeline or a 24fps timeline. For example, in the project I sent you (https://www.dropbox.com/scl/fi/pbziyx34vxpnd9a0qie79/Copied_TimecodeTestForAdobe.zip?rlkey=qg66si70waq7nnihrc5yn2xya&st=t44xiuqk&dl=0), I exported a mov from a 30fps timeline. Upon re-import the TC is wrong. However, if I were to duplicate that same sequence and change the frame rate to 24fps or 23.976 fps and export/reimport, the problem does not occur and the TC is correct. I am mostly a commercial editor, and almost always work with 23.976 or 24fps timelines and have never had a TC issue. However, I'm currently working on a project for a museum with all 30fps deliverables... and I am seeing this problem throughout--- Again, the source framerate of my media does not matter, only when the timeline framerate is 30fps do the problems start.
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