Nested sequences takes wrong previews, bug?

Report · May 20, 2017

Hi there. First time posting here, most of the time i visit for reading, (thanks!)

I have a premier pro project in the lates version where we are working a video for two screens. So one sequence for Display A, other for Display B.

Each Display has non standard resolution (1920x360) and we are working everything in 29,97 fps.

If we render each display sequence separated, everything if fine.

Then we have other sequence when display A and B are nested inside, so we end up with one video ready to be split into multiple displays.

Now...

There are some clips we are using in each display at the same time, but different timecode on each. For example the first shot is a house and in display A we are using the first part of the clip, on B we are using the last part of the same clip.

For some reason when we preview in the timeline and playback the preview file gets duplicated. Such as both displays are using the same timecode of the clip. And even worst, when we render the same things happen. Transitions such as fades got jumpcuts between the correct timecode and the duplicated clips.

If I hide one of the nested sequence the other goes right to the correct timecode, but having both on screen created this wrong edited video and jumpcuts. I thought at the beginning was only a preview problem, but same in render.

So we are rendering each display separated and then join in a new one to get the final delivery. But hope to just render once....

Any comments?

Thanks!

Report · Aug 05, 2017

I've equally had issues in Premiere Pro CC 2017, where nested sequences simply don't render the expected preview, it seems to get increasingly worse as you reuse footage and have nests in nests.

I've run into this in several different projects, and I simply believe that it's a deep bug that fell through QA.

My issues usually arise when I have fx. a chroma-keyed object that is duplicated several times offset temporally and nested together and then used in concatenation with itself. Then the nested object will suddenly only seem to display some of the original objects or the wrong time of the clip.

Only solution I've found to these things is to render stuff out and import said render, and use it like it was the nest, resulting in a worse workflow, but it can make what seems hindered achievable.

The supposed bug I see is illusive in nature and seems to come with multiple identical objects in a nest, time remapping and other complicated grouping.

Report · Mar 31, 2020

Wow, it's the early part of 2020 and the bug with nested clips in Premiere is still an issue!!

Trying to show two shots side by side to display a "before and after" of a blue screen key. No effects are being used, just two video clips. Footage was originally shot in standard-def as anamorphic, so I'm resizing each clip horizontally to get the true 16x9 aspect ratio. The 2 resized clips are then each nested in Premiere and added to the timeline one layer over the other, so that the clips can be positioned side by side. The only problem is that now both clips appear to be identical, which should not be the case. If you change the layer order, now both clips show as the other clip! Only work around I see is to export each clip at the new size, then re-import them as new clips and do the side by side effect from there.

Report · Jun 22, 2022

Its still an issue in 2022!

Report · Apr 16, 2020

Going to try my best to explain my specific problem, because it was a complex and weird one, because I feel it relates to the title of this thread, and because the solution I used to solve it might help someone else.

Issue:

I have a timeline made up of nested sequences ordered as Title Clip # - Product Clip # - Title Clip # - Product Clip # etc.

I duplicated one of the Product Clip nested sequences in order to keep the same Motion and Effects, I renamed it to Logo Clip, put it at the end of my timeline, and then opened the nest and swapped the Product footage used in that nested sequence to our company's logo instead.
But now, for some reason, when I return to the Master timeline containing all the nested sequences. The last and second last Product Clip #'s have changed to show the logo too instead of the product footage they're supposed to show? If I go into those individual Product Clip # nested sequences there's no logo there and the correct product footage is used. But on the Master Timeline, it's displaying the logo instead of the footage?
It gets weirder. If I go into one of those nested sequences and Toggle Track Output on the top layer with the Product Footage on, it disappears as it should when viewed in the Master Timeline, but the logo comes back if I make that top layer visible again. Furthermore, if I make the bottom layer in the nested sequence invisible (which is the background), the logo disappears and the correct footage is shown! Albeit without the now hidden background layer. If I restore the background layer, the logo comes back!

If I delete and re-add the problematic nested sequence to the Master Timeline, the logo issue remains.

If I delete the logo file from Premiere's project window altogether, the logo remains shown when I play the Master Timeline!

Solution:

I reasoned this must be some kind of rendering or display bug within Premiere.

I noticed that opening up an old Auto-Save didn't display this same issue.
I also found that Deleting the Media Cache solved this issue as well, so I didn't have to revert to an older save.
I can only assume it was a strange kind of bug to do with nests?

Report · Jul 11, 2020

having the same issue