Video from Media Encoder ProRes4444 export is black (Windows)

[Alain D.]

Hi - I've been plagued by this across many different projects now. At first I thought it was potentially tied to the Production environment, which I've been kicking the tires in the last few weeks, across 3 different Productions. But today I can confirm that is not the case as I'm in a regular project, outside of Production, and I am experiencing the problem...

1. Enter Export menu with your sequence (via CTRL+E hotkey in my case)
2. Grab Adobe's PR4444 preset
3. Export via AME
4. Inspect your clip in another player or re-import in Premiere: video is black, audio is ok.
5. Export via Premiere Pro: your exported clip is fine.

Sequence resolution is UHD, 30 fps. Fairly straightforward edit made of one main video track (sources are UHD.mp4), 1 layer of a black slug acting as a mask for one 1 layer of mogrts. I tried enabling/disabling the Max bit depth and Max quality settings thinking that was the issue initially, no change. Switch to other ProRes or H264.mp4 codecs, no issue, all is well.

The "fix" proposed in this article is not applicable here. There is no ARRI footage and this is not a Mac OS host.

Alain

Lenovo P920 running Windows 11 Pro for WS

Windows version 10.0.26100 Build 26100

2x Intel Xeon Gold 6136 CPU 3GHz 12 Cores 24 Logical Procs

192 GB Memory

NVidia GeForce RTX 4070Ti Studio Driver 572.83 

[Rach McIntire]

Hi @Alain D.,

Thanks for the message. Welcome to the forums.  Do you happen to be using adjustment layers in your sequence?  What type of footage are you working with?   Sorry for the frustration and thanks for reaching out.

[Alain D.]

Hi Rach -- negative, no Adjustment layers.

For this project, the source footage is 3840x2160, 30 or 60fps, H264.mp4 files. Nothing fancy in terms of codec...

Top layer is a semi-transparent logo;

The layer underneath is a succession of text generated in a series of mogrt (all the same);

The layer below that is internally generated black with a mask to create the supporting darker area for the text/copy;

And finally, the base layer are those UHD clips.

Everything behaves normally within the editor, no oddities on the Program viewport, it's as I export via AME that the bug shows up. For the record, this is a layout that I've used again and again over the last couple of years.