26 Reply by kathampy

(2 replies, posted in Using SVP)

Practically, no.

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27 Reply by kathampy

(33 replies, posted in Using SVP)

Chainik wrote:

There's a serious performance bottleneck playing 4K (especially in 10 bit) with SVP in mpv.
We'll share our build with fixes soon, but I hope it will be fixed in upstream hmm
https://github.com/mpv-player/mpv/pull/6262

Is this still an issue? 4K 10-bit video stutters with MPV + SVP, but plays smoothly with just MPV and even MPC + SVP.

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28 Reply by kathampy

(28 replies, posted in Using SVP)

If you trigger HDR using NVAPI, I believe it will treat the whole desktop as BT.2020 / PQ / 1000 nits without interference from Windows' "SDR content brightness" remapping. The target / tone mapping settings in mpv should then let the video be interpreted correctly.

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29 Reply by kathampy

(28 replies, posted in Using SVP)

I just got a a G-SYNC HDR monitor and cannot get HDR to display correctly using mpv. I have HDR enabled in Windows and the display is in HDR mode. No matter what target or tone mapping settings I use in mpv, it seems like Windows treats mpv as an SDR application and automatically maps it to the SDR gamut and brightness within the HDR signal based on the "SDR content brightness" slider. If I increase the slider to 100, the video is brighter but uses the wrong gamut or EOTF no matter what I force in mpv. madVR works fine without SVP.

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30 Reply by kathampy

(13 replies, posted in Using SVP)

I started having the same problem yesterday after I got a new 120 Hz display. On my old 165 Hz display it would output 60 fps videos as is, but on my 120 Hz display it stutters non-stop.

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31 Reply by kathampy

(28 replies, posted in Using SVP)

Chainik wrote:

mpv is the only way now, though it can't switch TV to HDR mode (like madVR does), but you can just turn on HDR in Windows 10's display settings.

When using MPV:
1. If I manually turn on HDR in WIndows, does this send the correct "Mastering display luminance" to the display for movies that aren't 1000 nits?
2. When I watch a HDR movie on a SDR display, does it automatically perform BT.2020 to Rec.702 conversion and tonemapping?
3. When I watch a HDR movie on a HDR display, does it ignore the above conversions?

I have "icc-profile-auto" in my mpv.conf because my SDR display has an ICC profile installed. What effect will this have on my HDR display with HDR turned on in Windows?

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32 Reply by kathampy

(33 replies, posted in Using SVP)

I'm unable to play 4K content either. I have an i7 4820K at 4.5 GHz, GTX 1080, LAV Filters HW decoding with DXVA Copyback, madVR, MPC-BE. If I reduce the quality slider to minimum, SVP Index stays above 1.0 but it still plays in slow motion and lags behind the audio. CPU usage is barely 50% across all cores. This only seems to be an issue with 10-bit high bit-rate content and not with 4K YouTube videos etc.

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