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  • Adobe Premiere Pro

    My workaround for ‘lost’ preview files in Premiere

    Posted by Preston Herrick on March 5, 2013 at 3:33 am

    So you render preview files in Premiere and the next time you launch the program you’re met with red bars in the sequence – indicating the need to re-render (even though those render files are still sitting on the hard drive right where Premiere last left them). While Adobe is purportedly aware of the issue, it’s still pretty annoying.

    I found a potential workaround which is very simple and has worked very reliably for me – as long as you remember to do it.

    Premiere seems to lose track of rendered preview files on the sequence that was displayed at the time the project was saved prior to exiting. When Premiere is re-launched, by default, it opens to the last displayed/saved sequence.

    So here’s what to do, whether your project consists of a single sequence or several.

    1) Create an empty sequence. Leave it empty. Rename it if you like (“Select me before saving and exiting”) – or not.
    2) Work in your other sequence(s). Render your previews as needed.
    3) Before exiting Premiere (this is the important part) switch to the empty sequence and save the project. Then exit.
    4) The next time you start Premiere: a) Select the project, b) Wait till all media is loaded (Premiere reports this at bottom). It will open to the empty sequence. When you switch to the work sequences, you should have green bars where the previews were previously rendered.

    Try it and let me know if this works for you.
    _________________________________________________

    Here’s what I think is happening. There seems to be some correlation between the speed in which all the media in a project loads and when Premiere decides whether a given render file is not only available but ready to play. If it didn’t find the files a dialog would pop up asking for it. So, it’s locating the previews on the HD but if said files are not ready to play (because they’re still loading and previews load last) then it ‘times out’ and the file is ignored – you get a red bar.

    The point of creating an empty sequence and saving/exiting the project from that sequence is precautionary. It avoids having to load preview files for that sequence the next time the project is launched. All of the media for the project still takes as long to load – which might be extremely quick on smaller projects or take several seconds on large ones (ex: hundreds of clips each with 4 tracks of audio). What is also critical for my workaround, is waiting for the all the media to load before doing anything – including switching to a work sequence.

    Preston

    Tom Daigon replied 13 years, 2 months ago 2 Members · 1 Reply
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