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12th November 2018, 21:57 | #1 | Link |
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madVR stuttering 4K playback
Hi. I'm having troubles playing my 4K remux files. Specifically they seem to stutter a lot when used with madVR + MPC-HC. This issue only occurs in high bitrate (remux, 70+ mbit/s) 4K files. Haven't tested regular 4K videos, but remux 1080p files (20-30 mbit/s) work fine. madVR struggles greatly, while VLC has no issues with those exact same files. Computer specs: VM machine, i7-4790k of which 6 cores are passed to the VM, GTX 1070 passed through to the VM.
The screenshot attached shows DXVA is used, but this also happens in fullscreen, where only bilinear chroma-upscaling is done. Encoder is set to hardware DXVA2. |
13th November 2018, 16:17 | #3 | Link |
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Here it is: https://i.imgur.com/zt3f9pv.jpg
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13th November 2018, 17:28 | #4 | Link |
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The decoder queue is empty. The video isn't being decoded correctly. Try another form of hardware decoding, like D3D11 Automatic (Native).
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13th November 2018, 20:46 | #5 | Link | |
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Quote:
Last edited by mytbyte; 13th November 2018 at 20:59. |
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15th November 2018, 22:58 | #6 | Link |
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Switching to D3D11 decoding worked, thanks! Any idea why it is like this? I'm sure I set DXVA2 in LAV Decoder settings, here's a screenshot: https://i.imgur.com/y6pP3ZX.png
Anyway, I still can't seem to get HDR to work properly. I set screen resolution to 4k@30hz, color settings to YCbCr422, color depth to 12 bit. Set madVR to passthrough HDR to the display. When playing a video the display switches to HDR mode, but the colors are desaturated. Here's a ctrl+j screenshot when in HDR mode: https://i.imgur.com/COxtfiW.png Another issue is the audio seems to go out of sync over a longer period of time, any idea what this may be about? |
16th November 2018, 00:22 | #9 | Link | |
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Quote:
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LAV Filters - open source ffmpeg based media splitter and decoders |
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