Missing clip on Premiere export

Report · Dec 08, 2017

Hi there. We are running PP 2018 on a 5K iMac. Recently we have struck a major issue during exporting. The exported video has black blocks throughout it. For example, using a mulitcam sequence, everything renders out fine except for one or two random parts where the video is black. The audio is still there - so it's not a missing file - it just won't show some of the video.

A work-around is choosing a different clip (or part of the same clip). Then it renders out fine.

An example of how frustrating this is, is watching down a final render for a client of a 42 minute video, only to see 2sec of black in the last minute - meaning we start the whole export/quality control again.

There doesn't seem to be anything on the web about this. And it is across 3 different iMacs, one with a different OSX.

Any ideas out there? Cheers.

Report · Dec 08, 2017

Is it the same clips in all of them? Or does a clip work fine in one station, but does this in another?

Have you deleted your media cache & cache database files?

Neil

Report · Dec 08, 2017

Hi Neil. Appreciate the reply. At the risk of sounding like an idiot, I can't find how to delete/clean out the cache. I have done it many times in the past - and know what it is, but this 2018 PP doesn't seem to have the option in preferences.

The clip is the same throughout the timeline - only cut up at points with the multicam. A work-around I have just found is I copied the offending clip to the layer above and it rendered fine. It's only a plaster, but at least I can get this video to the client.

Marc

Report · Dec 08, 2017

Don't worry about feeling like an idiot ... I think many of us "lose" things all the time we have to find again ... it's rather a complicated beastie, and occasionally they do move things around. (Just to see if we're paying attention? )

Edit/Preferences/Media Cache ... go there and see where the cache files are placed on disc. Close PrPro, manually delete everything in those folders, restart PrPro & let it rebuild the cache files for a couple minutes.

As it's one clip, but works ok if used differently ... I would expect cleaning the cache would do it. But glad you found a workaround to keep the client going ...

Neil

Report · Dec 08, 2017

Cheers Neil, instructions followed - 60GB cache..hmm. I will delete and see how I get on. Thanks again. Marc

Report · Jan 24, 2018

Hey Marc,

Did cleaning the media cache files help?

Let us know.

Rameez