losing renders in timeline

[George Defrates]

To: Tim Kolb,

I have been working the issue of losing renders in Premiere Pro since CS4. Still no fix from Adobe. Recenly I read a thread on this issue and the problem seems to be an issue with .avi files that have alpha channels. I have send a bug report to Adobe, but doubt I will hear anything back. This issue has been going on for a very long time and is EXTREMELY frustrating! I am hoping someone like you with considerable more clout with Adobe than I can help bring this to Adobe’s attention so we can finally get this issue remedied. There seems to be a large number of people experiencing this problem and for Adobe to take years with out generating a “fix” is absolutely rediculous.

Can you please help?

Thanks.

George

[Tim Kolb]

What kind of files are you working with?

You said you have the issue with AVI files with an alpha channel…are you referring to source files or the designated preview render format?

I need the exact media type and sequence setting as I’d like to experiment and see if I can reproduce it myself as I’m not sure I’ve run into this one yet…

TimK,
Director, Consultant
Kolb Productions,

Adobe Certified Instructor

[George Defrates]

Hi Tim,

I make photo video DVD’s now using CS5. I make an.avi file and export as RGB+Alpha in After Effects – DV NTSC 720X480, 29.97, millions of colors, premultiplied, and have checked include project link. I import this file to Premiere Pro.

In Premiere Pro my sequence settings are:
edit mode – DV NTSC
Timebase – 29.97
Pixel aspect ratio – 0.9091
Fields – None Progressive
Dos[;au fpr,at = 30 FPS drop frame
Preview format – NTSC DV
Codec DV-NTSC
frame size 720×480
Maximum bit depth
Maximum render quality

Video previews go to my C drive, users/my documents/Adobe/Premiere Pro/5.0.

PP loses the rendered files very often. Also, if I begin to render a file and go back to AE or most any other program, PP often times loses the render and when I go back to PP I must render the file again.

I did a search on “premiere Pro losing renders” recently and found where someone did a great deal of testing and concluded the issue has to do with files containing alpha channels. After years of having this issue this is the first time I seen any potential cause for the lost renders. I hoping this is the actual cause.

If you need more info, please let me know.

Thanks you for your help, Tim.

George

George

[George Defrates]

Tim, forgot to mention. In my PPro sequence, I have background .avi file on Video track 1 with my photo .avi files on Track 2. The background video is made up of 30 second looping video and my photo .avi files run around 5 to 10 seconds in length.

Thanks, Tim.

George

George

[Brian Sarfatty]

Interesting…..

This makes sense. I have a 4k sequence (ridiculous, I know for a web video. Whatever, not my choice).

I did some text callout overlays in After Effects – in AE because they “flame on”.

It took like two hours to render my Premiere sequence.

I went back into the same AE project to do a logo animation. Did not touch my callouts comp.

Now back in Premiere, my render files are all gone.

It should be noted, that rather than render comps in AE to Animation QTs, I am just importing the comps unrendered using Adobe Dynamic Link. Keep things Flexible like.

Also, last night I rendered the logo animation in Premiere. I have not since gone back to open AE or modify the AE project. But the render files for the logo animation are gone. There is a part of this that keys over the video.

Using Premeire CS6.

Seems to be an annoying problem, I wonder if rendering Animation QTs out of AE with Alpha channels will be quicker than laying in the AE comps with dynamic link, esp if the render files keep dissapearing. From above sounds like now, but any info would be good.

Why hasn’t Adobe fixed this if this problem seems to go back (based on thread) from CS3 all way up to 6????!!!!

[Tom Daigon]

I have had this problem intermittently as well with rendered preview files,

My solution is to export from AE to DNxHD (or whatever you prefer) WITH PROJECT LINK CHECKED.

This way, when I import the movies into PRP and place it on the timeline, if I need to revise it I can select it-right click-then use Open Original to reedit it. This works well for me.

Tom Daigon
PrP / After Effects Editor
http://www.hdshotsandcuts.com
https://www.youtube.com/watch?v=DxPrG3WUyz8
(Best viewed at 1080P and full screen)
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid

[Tim Kolb]

Wow…this thread came back from the archives…

The preview renders in PPro are really meant to be temporary…though I’m not sure why the preview would dump for one Dynamic Linked comp when you create/alter a different comp in the AE project if there is no nesting or changes made on the second comp that would affect layers in the first comp.

All that said, I’ve always started with a DL’d comp and then made a render to insert in the sequence, moving the DL comp to an upper, disabled track.

Part of the reason is that things do tend to run a bit smoother, but also because the project manager does not reach out and gather up DL’d assets, so if you don’t create a rendered ‘clip’ asset, and you overlook a particular AE project through a manual process of gathering all those ‘external’ assets at project conclusion, you may archive a dynamic link to nowhere.

Rendering the animation and embedding the project link is definitely a good plan, the only caveat being that I haven’t typically been able to overwrite the rendered asset out of AE when PPro is launched with the original asset imported, so the new render needs to be a v2.0, etc.

TimK,
Director, Consultant
Kolb Productions,

Adobe Certified Instructor

[Tom Daigon]

[Tim Kolb] “Rendering the animation and embedding the project link is definitely a good plan, the only caveat being that I haven’t typically been able to overwrite the rendered asset out of AE when PPro is launched with the original asset imported, so the new render needs to be a v2.0, etc.”

Tim, I havent had that problem.

When I need a change I Edit Original, make changes, save project then export as the same name overwriting the originally created movie export.

Tom Daigon
PrP / After Effects Editor
http://www.hdshotsandcuts.com
https://www.youtube.com/watch?v=DxPrG3WUyz8
(Best viewed at 1080P and full screen)
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid

[Tim Kolb]

Tom,

So you can make a change, re-render and the asset “self-updates” in PPro while the PPro project has been open with the clip imported and on a sequence the entire time?

TimK,
Director, Consultant
Kolb Productions,

Adobe Certified Instructor

[Tom Daigon]

Tim it been a while since Ive done this process, but if memory serves (and theses days sometimes it doesnt) that’s exactly how it worked.I will confirm it to be sure.

Tom Daigon
PrP / After Effects Editor
http://www.hdshotsandcuts.com
https://www.youtube.com/watch?v=DxPrG3WUyz8
(Best viewed at 1080P and full screen)
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid