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Handling of HEVC + option "--tier high" for levels 1 to 3.1 #188

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warrex1979 opened this issue Jan 16, 2020 · 2 comments
Closed

Handling of HEVC + option "--tier high" for levels 1 to 3.1 #188

warrex1979 opened this issue Jan 16, 2020 · 2 comments

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@warrex1979
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HEVC does not have high tiers for the levels 1 to 3.1. If the option "--tier high" is set for content that falls into the levels 1 to 3.1 (this includes 720p) NVEnc sets zero as maximum bitrate resulting in unusable output. I tested this with "--vbrhq 0 --vbr-quality=25".

I would recommend to ignore "--tier high" in these cases and warn / inform the user about it.
rigaya added a commit that referenced this issue Feb 1, 2020
@rigaya
HEVCエンコ時に、high tierの存在しないlevelが設定された場合、main tierに修正するように。 ( #188 )
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@rigaya
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rigaya commented Feb 1, 2020

Thanks for pointing out the problem here, NVEnc 4.62 will automatically disable --tier high with warnings, when --level is set to 1 ～ 3.1.

@rigaya
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rigaya commented Feb 10, 2020

I'll close this issue as the recommendation has been applied now. Please re-open if you have any related issues.

@rigaya rigaya closed this as completed Feb 10, 2020
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@rigaya @warrex1979