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IDProjectCategoryView StatusLast Update
0000017madVRbugpublic2019-02-21 13:32
ReporterDarkSpace Assigned Tomadshi  
Status acknowledgedResolutionopen 
Platformx64OSWindows 7 UltimateOS Version6.1.7601
Summary0000017: Display Aspect Ratio changes too early
DescriptionWhen playing files that change the Video Aspect Ratio mid-stream, the Target Rectangle changes too early so that the last few frames of the un-AR-changed sequence appear distorted.
Steps To ReproduceAny file that changes Display Aspect Ratio mid-stream should do, the attached files achieve this via Ordered Chapters, so it's irrelevant which file you open as the order stays the same:
Each of the files contains 50 frames and the respective frame numbers (0-49 and 50-99) displayed on the right side.
Frames 0-49 are to be displayed in 16:9 Aspect Ratio, and frames 50-99 in 4:3 Aspect Ratio.
Additional InformationThe other renderers I tested (EVR-CP, EVR Sync and Haali Renderer) worked fine regarding the time at which the Aspect Ratio switch was supposed to happen.

How much earlier than it's supposed to the switch happens appears to be somewhat connected to the CPU Queue size (the larger, the earlier), but it also happens earlier in Windowed Mode than it does in FSE Mode.

I'm not yet sure if the fact that madVR only displays up to frame 98 is a bug in madVR or in the player or somewhere else, as all my tests with EVR stopped at a much earlier frame than 98, and Haali Renderer displays a blank screen instead of the last frame.
TagsNo tags attached.
madVR Version0.86.1
Media Player (with version info)MPC-HC (744df1c)
Splitter (with version info)Haali Media Splitter
Decoder (with version info)LAV Video Decoder 0.55.3
Deinterlacingnone (progressive)
DXVA2 Scaling Activeno
Aero / Desktop CompositionOff
Problem occurs with modeall modes
GPU ManufacturerAMD
GPU ModelRadeon HD 6970M
GPU Driver Version2D Driver, Direct3D, OpenGL



2013-02-24 13:28


test.rar (397,960 bytes)


2013-03-16 11:10

administrator   ~0000046

I was aware of this issue, but didn't get around fixing it yet. Not sure how difficult it will be to fix. Which means that I don't know how soon I'll be able to implement this.


2013-03-17 19:30

reporter   ~0000051

Well, the samples were unnecessary then, it seems. Anyway, thanks for the response, I appreciate your looking into it.

Issue History

Date Modified Username Field Change
2013-02-24 13:28 DarkSpace New Issue
2013-02-24 13:28 DarkSpace File Added: test.rar
2013-03-16 11:10 madshi Note Added: 0000046
2013-03-16 11:10 madshi Assigned To => madshi
2013-03-16 11:10 madshi Status new => acknowledged
2013-03-16 11:16 madshi Priority low => normal
2013-03-17 19:30 DarkSpace Note Added: 0000051