It appears that by selecting the option 'Use Proxies' in the render settings, this issue has cleared up. I can render from Premiere, or Media Encoder, and mess with all sorts of other settings, and it just works! Not sure why this is the case, but we're going to continue rendering with this option selected to solve this problem moving forward!  ... View more

To continue the discussion and address ideas/messages above (thank you for the help!):   - It does not work to directly export from Premiere Pro - I get the same exact issue - I've tried both the Mercury Playback Engine Software Only and Mercury Playback Engine GPU Acceleration (CUDA), neither have fixed this issue - I tried unchecking the box 'Import sequences natively' in Media Encoder, this did not fix it either,  - I currently have Nvidia Studio Driver Version 560.70 WHQL for Windows 10 64-bit English (US) installed. I've also tried the following drivers (all Windows 10 64-bit):   > NVIDIA Studio Driver 556.12   > NVIDIA Studio Driver 555.99   > NVIDIA Studio Driver 555.85   > NVIDIA Game Ready Driver 560.70   > NVIDIA Game Ready Driver 556.12   > NVIDIA Game Ready Driver 555.99   > NVIDIA Game Ready Driver 555.85 None of these drivers exhibited any different behavior, except that the NVIDIA Game Ready Driver 556.12 was the driver I had installed when it miraculously worked before restarting and updating drivers. I've since tried these same drivers again, and the issue is back.     ... View more

Interesting development to this issue.... Randomly a co-worker tried rendering this problem file, and Media Encoder rendered the video perfectly. Nothing had been changed, and all files were in their original configuration (I had walked back all troubleshooting efforts). To be sure this stuck, I installed an NVIDIA GPU update, and did a restart. Now the problem is back....consistently the same as it was before 😞  ... View more

I just tried this as well (creating a new sequence - I even did this in a brand new pproj) and copying/pasting the clips from the old sequence to the new....and no luck again.  ... View more

 I tried re-wrapping the source files, and then replacing the footage in the timeline - and the exact same problem (at the exact same time) persists. ... View more

I am using an Nvidia 3070, and so I tried both of your suggestions - changing the GPU setting to software only, and installing the latest studio drivers as a 'clean install'. Blaming the GPU and the render process for encoding was next up on my list of things to track down....unfortunately neither of these suggestions worked, and the output is exactly the same. ... View more

Thank you - looking forward to any guidance on this....   So far, I've tried: - rebuilding the computer and reinstalling everything to the latest version,  - walking back versions into 23.XX - Rendering in other export formats (MPG2/AVI/H265) - Rendering with all sorts of options switched back and forth in Export settings - Rendering the same PPROJ/source files from a different PC   So far, if its on a PC, the problem exists, if its with a Mac/OSX, the problem is not present.  ... View more