Some ProRes 422 Video Preview Files lost on closing and re-opening project

Not had time Kevin as have been diverted on other things and finishing off another project where I used ProRes and would have not been practical to change mid workflow.

Now complete,  I was going to try some ProRes LT tests (as MyerPJ suggested above).

I did see CineForm is an alternative - BUT - I have just invested in Topaz Video Ai for processing some occasional clips and use Pro Res for that. They don't support CineForm codec I don't think.

Will post any results soon.

Hi! Have you tried a different codec yet? If so, is it working @JonesVid?

Thanks,
Kevin

Thanks Myer PJ for that.

I was thinking of trying Cineform but not done that yet, but if ProRes LT stops losing rendered files that would be good to know.

I'll try it myself and post result !

I've been watching a project for this. So far it has worked OK. I was using Cineform previews for this project originally, but I changed them the ProRes LT and rerendered. I've in and out of that half dozen times so far and it has held up. I'll keep an eye on it.

Kevin noted above he is losing pre-rendered Pro_Res 422 preview files with captions above.

On my windows machine - this makes no difference as I'm not using captions.

Any pre-rendered preview to use during export can be lost on closing the project powering down the machine and re-opening again.

Smart rendering is a waste of time for me.

'10th Element' thx for comments - you do say use iFrame previews, but then you don't benefit from the faster exports by Exporting in same format as your previews.

...btw - I'll skip on the Apple dongle to calm down Windows when using Pro Res codecs 🙂 🙂

Keep us posted please Kevin on your internal push on this one.

It would be good for Engineering to take a quick look at this.

They might fix it before Santa arrives ?

P.S. whilst my fellow editor on that project was on a Mac computer and had reported that she experienced no such issues. So... yeah... be on the lookout for Apples new "make my pre-renders work again" dongle from apple, for the low prince for $499.99 (JOKES, I'm kidding! I'm kidding! but in all seriousness it's definitely ProRes not playing nice with Windows right now)

The latest update to Premiere appears to have arrived with some pre-render issues associated with the ProRes codec. I believe this issue is solely effecting Windows users and so probably the transalation of an Apple native codec on Windows OS has some bugginess happening for whatever reason. My experience has been that I will attempt a pre-render across my entire timeline, and it will render perhaps a few seconds, and then close as if it completed it's render, with the rest of my timeline unrendered. When going from "render in to out" over to "render effects into to out" it seems to have made more progress, but the issue still remains.

THE SOLUTION as for now at least, to simply get us Windows users by until the issue can be pinpointed and resolved, is to go into sequence settings, and under "Video Previews", change it from ProRes to "I-Frame Only MPEG". Fair warning, it generates a ton of tiny files. Alerted our admin when I was working on a cloud project and she asked why I suddenly deleted 600 files off the server at once, having had to explain that I had completed my project and was simply deleting the preview files files. BUT, I gotta say, pre-renders were running smooth with no issues! So it's what works until we get our next update!

HI JonesVid,

Thanks for the updates. Sorry for the frustration on this one. I tried to replicate the issue and did find one glitch the first time I tried simply closing and reopening the project. The only thing I noticed is that it was a clip that was underneath an extended marker (red in color). I also had a caption over the clip. The video preview (render) file got unlinked. After re-rendering, I did not see the problem.

I'll keep trying to isolate this issue on my systems over the holiday. I have a couple of project I can test on with similar footage and systems.

Thanks,
Kevin

Aggghh

Is there anyone out there?

This problem of losing indexes for rendered files is driving me nuts

The project I am working on had bloated the Video Preview Files Folder to over 100GB as there were so many duplicates I had to delete the lot and re-render the entire project - long time waiting !!!

Also deleted Media Cache yet again

Start up again. All good. Now after closing down project and going back in again it is STILL LOSING THESE DAMN FILES.

Its Random which ones.

I need help .....please

Just to illustrate an example today see attached pdf.

I opened the latest Premiere project I am working on and guess what - the dreaded Red Line on timeline which means Premiere cannot locate the ProRes preview file already created.

I had to create yet again the same file to fix this.

It is becoming annoying.

Hopefully someone from Engineering will respond ?