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Max Render Quality - not functioning

Explorer ,
Aug 01, 2023 Aug 01, 2023

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Exports run as normal with Max Render Quality selected, but it has no decernable affect on quality of output. Primary use case is exporting UHD sequences at HD. The sequences contain some assets that are upscaled in motion settings on the timeline and then subsequently downscaled as part of the export. Previously using Max Render Quality has functioned similar to AE's continous rasterization and subsequently exports of upscaled-then-downscaled source material show no quality loss compared with the original source file. However, in the current version there is a noticable quality drop as if Max Render Quality has not been checked.

 

Premiere Pro Version 23.5.0 (Build 56)

Media Encoder Version 23.5.0 (Build 51)

 

MacOS Monterey Version 12.4

Mac Pro (2019)
Processor 3.2 GHz 16-Core Intel Xeon W
Memory 192 GB 2933 MHz DDR4
Startup Disk Macintosh HD
Graphics AMD Radeon Pro Vega Il 32 GB

 

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correct answers 1 Pinned Reply

Adobe Employee , May 21, 2024 May 21, 2024

Hello @Brice5C88,

Thanks for the information you have provided so far, especially about the computer. @moervx, thanks for providing those test files.

 

I hope with this info the team can repro your issue and fix it ASAP.

 

Thanks,
Kevin

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Engaged ,
May 21, 2024 May 21, 2024

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I  have finally downloaded the project and assets, and I can confirm that H.264 export is softer in the 2024 versions. Exporting a ProRes file WILL obey the MRQ setting, and export a crispy clear file. Using that file to export an H.264 file will result in a crispy H.264 file. 

So something in the H.264 export is broken in the 2024 versions. It doesn't do its MRQ (or better, with hardware rendering) thing when Hardware Encoding is selected.

Please fix, Adobe!

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Adobe Employee ,
May 21, 2024 May 21, 2024

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Hello @Brice5C88,

Thanks for the information you have provided so far, especially about the computer. @moervx, thanks for providing those test files.

 

I hope with this info the team can repro your issue and fix it ASAP.

 

Thanks,
Kevin

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Community Beginner ,
May 21, 2024 May 21, 2024

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@Kevin-Monahan 
Todd Kopriva: "So, scaling using CUDA can be better. And faster. In some tests done here, scaling was more than 40 times faster on the GPU than on the CPU at maximum quality.
When Premiere Pro is just using the CPU for the processing of scaling operations, it uses the following scaling methods:
- playback: bilinear.
- paused: Gaussian low-pass sampled with bilinear.
- high-quality export (Maximum Render Quality off): Gaussian low-pass sampled with bilinear.
- Maximum Render Quality export: variable-radius bicubic.
The variable-radius bicubic scaling done on the CPU is very similar to the standard bicubic mode in Photoshop, though the Premiere Pro CS5 version is multi-threaded and optimized with some SSE instructions. Even with these optimizations, it is still extremely slow. For high-quality scaling at faster-than-real-time processing, you need to use a CUDA card.
When Premiere Pro CS5 is using CUDA on the GPU to accelerate the processing of scaling operations, it uses the following scaling methods:
- playback: bilinear.
- paused: Lanczos 2 low-pass sampled with bicubic.
- export: Lanczos 2 low-pass sampled with bicubic.
For export, scaling with CUDA is always at maximum quality, regardless of quality settings. (This only applies to scaling done on the GPU.) Maximum Render Quality can still make a difference with CUDA-accelerated exports for any parts of the render that are processed on the CPU. Over time, we are working on reducing the list of exceptions to what can be processed on the GPU."

Where does GPU acceleration go all the time? Where is the high-quality hardware scaling? To export ProRes and get a 2-fold increase in speed, you need to turn off the video card, although it should not work there.
And there are dozens of such nuances, an ordinary user will not constantly test it.
There is no methodology for what works and how. Puget Systems does not test such things, and there are no more literate bloggers.
Some unanswered questions.

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Community Beginner ,
May 22, 2024 May 22, 2024

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@R Neil Haugen 
That is, 10 years ago, the GPU skylink worked on Lanczos 2, and now 10 years later only the CPU and only "variable-radius bicubic".
Yes, and you don't need a GPU, it was in CS5... everything will be rendered by CPU.

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