Thanks for your reply, Hendrik.
I believe the content on a DVD can be stored as soft-telecine, in which the frames are stored progressive at 23.976 and flags are inserted to instruct the player to duplicate frames as needed to get to 29.97. You told me that once, too.
The correct playback rate for these is 23.976. Other tools identify the content as such, but not MC.
I've read before that the DXVA deinterlacer doesn't reveal what it's doing, so fair enough that there's no way to tell if actual deinterlacing is applied.
But the madvr OSD says deinterlacing is on(upstream) and the refresh rate is set to 59.94 to accommodate the 29.97 framerate, and visual stuttering occurs. And that's not good.
Moreover, the deinterlacing being on still interferes deleteriously, and I can prove it. Here's what happens you you play movies like this (mediainfo readout below) in MC at different refresh rates: (Case 1 is ROHQ Default)
Case 1: 29.97 Deint on: Stutters
Case 2: 29.97 Deint forced off: Stutters
Case 3: 23.976 Deint on: Stutters worse
Case 4: 23.976 Deint forced off: PERFECTThe difference between cases 3 and 4 is deactivating deinterlacing. In order to get to Case 4, and correct playback, currently several manual tricky things must be done that lots of people don't know how to do. That shouldn't be necessary since this is such a common case. Changing the FPS can be done through the MC interface, but forcing the deint off cannot, and both actions are required for correct playback.
What I'm saying is that we should let people playback their 23.976 progressive DVDs at the correct framerate without stutter, without making the user jump through a lot of hoops.
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Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings : CustomMatrix / BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=12
Duration : 1 h 39 min
Bit rate mode : Variable
Bit rate : 5 445 kb/s
Maximum bit rate : 7 500 kb/s
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Scan order : 2:3 Pulldown
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.657
Time code of first frame : 00:59:58:00
Time code source : Group of pictures header
GOP, Open/Closed : Open
GOP, Open/Closed of first frame : Closed
Stream size : 3.79 GiB (95%)