Banding in the sky only after I render a clip

[Luke Pearson]

how do I check to see what my render outputs are set to?

[Jeff Pulera]

Hi Luke,

When you do the final export, do NOT check the box for USE PREVIEWS, as this will carry the issue over from the low quality temp render files to the final output.

Thanks

Jeff Pulera
Safe Harbor Computers

[Luke Pearson]

Let me know if anyone else has any ideas. Jeff was helping on another thread as well and we still couldn’t come up with a solution that worked. I appreciate everyone’s time.

[John Pale]

[Luke Pearson] “where do i change the preview codec?”

Bottom portion of Sequence Settings. In some sequence presets, the default is MPEG I-Frame, which I believe is 8 bit.

[Richard Herd]

WHat’s your keyframe distance?

[Luke Pearson]

thanks for taking a stab at this, Richard. I’ve tried the keyframes at a bunch of different distances as well as using other fade methods such as black matte fading out revealing image, dissolve transitions, etc. None of those made a difference that I could tell. The fade up looks perfect until it was rendered or uploaded.

[Richard Herd]

But that doesn’t answer the question. ? In the old days, like 5 years ago, haha, we could Force a keyframe using markers. I can’t find a way to do that in Premiere. But if you find it, please let me know. Anyway before every dissolve I always placed a marker, 1 frame before the dissolve started.

I always set my keyframe distanct to half the timebase. So if you’re in 24fps, keyframes at 12. If you’re at 30, keyframes at 15 etc. And for me, I personally never use the default because the corresponding size in video file is really not that big given that we’re dealing with video files which are already massive.

Another trick is this: the dissolve drag-and-drop thing uses some kind of blending mode and will interpolate frames if you do not have enough handle, so you can use your own blending mode by overlapping the clips and keyframing the opacity. If that doesn’t work there are a few more techniques using Dynamic Link into After Effects.

[Alan Lloyd]

Ever get this sorted?

[Luke Pearson]

Unfortunately I did not. I tried every technique that was recommended with no luck. I had to move forward with the project as I had a deadline to hit. I’ll try some camera tests soon and see if I can replicate the issue I was having with different shots. Here is the final edit (banding included):

https://www.youtube.com/watch?v=42TJ1NdDCXs

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[Jacobi Alvarez]

In case anyone like me comes across this post with this problem, here’s what worked for me.

I was having a similar issue. I had footage of a person laying on white tiles and there was some awful banding when I used a Cross Dissolve to fade up. I also used an FS7 like the original poster.

It was WORSE when I unchecked Liner Color in Project Settings. (Other threads seem to say that can be a fix.)
It was WORSE when I used Cross Dissolves instead of Keyframing the Opacity. (Other threads seemed to agree, and it might be because the default transition has a big jump from 0-22% I’ve heard? Others may know better.)

It was FIXED:
Change Preview Settings (in Sequence Settings) to ProRes instead of whatever the default MPEG setting was.
Check Max Render and Depth in Sequence Settings (Not just export settings.)
Black Video on Top of Footage, Keyframe 100-0% for the transition
Uncheck/Don’t use Previews for export (I did this just in case.)

Alternative Fix:
I tried placing a white color matte on top of the video and inserting a Cross Dissolve at the end of the white matte and that had no issues—presumably because my footage was already mostly white-ish. I didn’t want to use this fix because I wanted to fade from black not white.

I have no idea WHY any of this is true, but that’s where I landed.