Very low quality on 720p exports from Premiere, unlike when transcoding in AME

Community Beginner ,
Jan 28, 2021 Jan 28, 2021

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I have a UHD sequence (3840x2160) with 4K (4096x2160) inside it. Some of them are scaled at 170%, others at 103%.

 

Exporting this sequence at 720p (without Maximum Render Quality) from Premiere or AME results in very poor quality. Switching Maximum Render Quality on solves the issue.

 

However, if I first render the sequence at UHD resolution to ProRes, and then transcode it in AME without Maximum Render Quality, the quality is just fine. The pictures are from 170% scaled clips.

 

What gives? Why do I need to use Maximum Render Quality when exporting from Premiere, but when transcoding clips in AME, I don't?

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Error or problem, Export

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Adobe Employee ,
Jan 29, 2021 Jan 29, 2021

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Hi Atso Galkin,

 

Maximum Render Quality helps preserve details and avoid aliasing when scaling to a frame size different from your source media. For example, exporting from a high-resolution 4K sequence to a lower resolution HD or SD format. Enabling this option can improve quality but keep the following in mind:

  • Export times can increase significantly, especially on systems without a supported GPU.
  • Systems with supported GPU hardware automatically use maximum render quality if Renderer is set to Metal, CUDA, or OpenCL. Leave this setting deselected in those scenarios.
  • This option is only useful when exporting to a different frame size. If you’re exporting at the same frame size as your source media (like rendering/transcoding a UHD sequence in UHD resolution), leave this setting deselected.

Hope this helps,

 

Thanks,

Sumeet

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Adobe Community Professional ,
Jan 29, 2021 Jan 29, 2021

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