madshi bug tracker

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IDProjectCategoryView StatusDate SubmittedLast Update
0000577madVRbugpublic2018-09-17 16:032018-09-17 20:18
Assigned To 
StatusclosedResolutionwon't fix 
PlatformAMD HD7850OSWindowsOS Version8.1 x64
Summary0000577: treat 25p movies as 24p option not working if software deinterlacing is enabled
DescriptionIf software deinterlacing mode in LAV Video is Weston Three Field then madVR ignores "treat 25p movies as 24p" setting state and always behaves as it is off. Sample 25fps video: [^]
TagsNo tags attached.
madVR Version0.92.14
Media Player (with version info)MPC-HC 1.8.1 x86
Splitter (with version info)LAV 0.72.13
Decoder (with version info)LAV 0.72.13
DecodingDXVA2 Copyback
Deinterlacingauto mode
DXVA2 Scaling Activeno
Aero / Desktop CompositionOn
Problem occurs with modeall modes
GPU ManufacturerAMD
GPU ModelHD7850
GPU Driver Version17.7.1
Attached Files

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-  Notes
madshi (administrator)
2018-09-17 16:27

Well, if you deinterlace 25p video, you get 50p. So LAV must be sending 50p to madVR. Which is obviously not 25p. The option is not meant to treat 50p as 48p.
GCRaistlin (reporter)
2018-09-17 19:10

I understand. But it's too easy to forget that software deinterlacing is enabled.
To be honest, I found out the cause just by accident. Isn't it worth to treat 50p as 48p indeed?
madshi (administrator)
2018-09-17 19:15

That wouldn't make too much sense because most TVs support 50p, but only very very TVs support 48p. The situation is totally different with 25p vs 24p.
GCRaistlin (reporter)
2018-09-17 20:18

I see. Thanks for the explanation!

- Issue History
Date Modified Username Field Change
2018-09-17 16:03 GCRaistlin New Issue
2018-09-17 16:27 madshi Note Added: 0002364
2018-09-17 19:10 GCRaistlin Note Added: 0002366
2018-09-17 19:15 madshi Note Added: 0002367
2018-09-17 20:18 GCRaistlin Note Added: 0002368
2018-09-17 20:18 GCRaistlin Status new => closed
2018-09-17 20:18 GCRaistlin Resolution open => won't fix

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