These are my specs:
- Adobe Premiere Pro 15.4.1 (Build 6)
- Windows 10 Pro (Build 19044)
- Intel Core i7-7700K @4.20GHz
- ASRock Z270 Killer SLI/ac MBoard
- 32GB RAM
- AMD Radeon RX 570 8GB VRAM
- Intel HD Graphics 630 (enabled for Hardware Encoding)
I am working with R3D footage in the REDWideGamutRGB Colorspace and LOG 3G10 Gamma Curve. The footage is 8k (4536x3780) 2.0 Anamorphic, 23.976 progressive. All source settings are correct.
I have encoutered a problem that I have no idea how to resolve without going through a very tedious process. I am using time remapping to compress/stretch the duration of individual clips, with a strong preference for Optical Flow. I was originally working in a trilinear color management and had zero issues. However, I switched to tetrahedral, and now have unrenderable/unencodable footage on my clips that have Optical Flow enabled (see picture 1). No other clips are affected adversely, EXCEPT for one where I had a Sharpen Mask drawn on. This is present on the exported encode, before anyone asks.
If I select Frame Blending, the same problem is different. If I select Frame Sampling, the problem goes away, but I do not consider that a valid solution as it's visually inferior (I would switch back to Trilinear before using Sampling). Display Color Management has no effect on it at all.
An interesting observation -- when rendered In/Out, the clips play properly (at all playback resolutions), but when paused, Picture 1 is what displays from full resolution. Picture *2* is what displays at 1/4 resolution, and at 1/8th and 1/16th, the image reappears (though in mercilessly poor quality). Regardless of the playback settings in Premiere, however, the export still yields the horizontal bars. No changes in export configuration have solved this for me (software/hardware encoding, lower resolution, bitrate, etc).
The ONLY solution I have discovered (and I'm not sure I can replicate this reliably) is that for the ONE clip that I had to move into After Effects to rotoscope out a boom, I have NO problems with Optical Flow in playback or exported after importing back into Premiere via Dynamic Link. No settings are different in After Effects (Mercury GPU Acceleration OpenCL is enabled, 32-bit depth).
I think I have to assume is this some kind of hardware issue -- but then I don't exactly understand why the AE composition seems to work, whereas the Premiere-native ones don't. NOTHING I have tried has worked: nesting, rendering, pre-rendering, switching color spaces, and so on. The ONLY thing that seems to let it survive is feeding the clip through AE, and that will take hundreds of hours to do for every clip that needs it. My only thought at this point is to try and to a system restore to the point in time when it worked.
Does ANYONE know why this might be happening?
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