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MediaPortal 1
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Madvr with GeForce 30xx - can't play SDR content after playing HDR
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<blockquote data-quote="ThoW1982" data-source="post: 1281675" data-attributes="member: 108121"><p>Yes, with AMD Radeon 580 all was well (on MP version updated to the latest available in April 2020 according to backup folder). Then once I wiped AMD drivers I put Nvidia 3070 in and the problem with SDR colors after playing HDR started. I have updated MP to 1.27 immediately after I spotted it but that did not help. </p><p></p><p>To me the issue looks like it's related to Nvidia cards / drivers. I have tried all drivers for 3070 but none of them help with MP. Re driver support for HDR in software players see <a href="https://forum.doom9.org/showthread.php?t=176013" target="_blank">AMD, Intel and Nvidia driver issues and last recommended version - Doom9's Forum</a></p><p></p><p>I have checked MPC with madvr - full screen HDR working, no issues with SDR playback after HDR. Kodi 19 Beta 2 (always liked MP better) - HDR full screen working, no issues with SDR playback after HDR but Kodi 19 Beta 2 doesn't use Madvr. I have checked latest Madvr beta with MP - doesn't help.</p><p></p><p></p><p></p><p>No - I have the same for all applications:</p><p></p><p>[ATTACH=full]207796[/ATTACH]</p><p></p><p>For HDR there is a switch in Windows under Display -> Windows HD Colour Settings:</p><p></p><p>[ATTACH=full]207797[/ATTACH]</p><p>AFAIK none apps can toggle this switch automatically. </p><p></p><p>What I do know is that there is <a href="https://developer.nvidia.com/high-dynamic-range-display-development" target="_blank">NVIDIA HDR API</a>. I think Madvr uses it to toggle HDR on / off on nvidia GPUs. This might be probably very complex (not a Windows developer) and / or time consuming but using this API on playback "stop" to send a signal to GPU driver to disable HDR might fix the issue? But Madvr should be doing it already and after switching off HDR content my TV reports SDR content, not HDR so I don't know...</p></blockquote><p></p>
[QUOTE="ThoW1982, post: 1281675, member: 108121"] Yes, with AMD Radeon 580 all was well (on MP version updated to the latest available in April 2020 according to backup folder). Then once I wiped AMD drivers I put Nvidia 3070 in and the problem with SDR colors after playing HDR started. I have updated MP to 1.27 immediately after I spotted it but that did not help. To me the issue looks like it's related to Nvidia cards / drivers. I have tried all drivers for 3070 but none of them help with MP. Re driver support for HDR in software players see [URL="https://forum.doom9.org/showthread.php?t=176013"]AMD, Intel and Nvidia driver issues and last recommended version - Doom9's Forum[/URL] I have checked MPC with madvr - full screen HDR working, no issues with SDR playback after HDR. Kodi 19 Beta 2 (always liked MP better) - HDR full screen working, no issues with SDR playback after HDR but Kodi 19 Beta 2 doesn't use Madvr. I have checked latest Madvr beta with MP - doesn't help. No - I have the same for all applications: [ATTACH type="full" width="822px"]207796[/ATTACH] For HDR there is a switch in Windows under Display -> Windows HD Colour Settings: [ATTACH type="full"]207797[/ATTACH] AFAIK none apps can toggle this switch automatically. What I do know is that there is [URL='https://developer.nvidia.com/high-dynamic-range-display-development']NVIDIA HDR API[/URL]. I think Madvr uses it to toggle HDR on / off on nvidia GPUs. This might be probably very complex (not a Windows developer) and / or time consuming but using this API on playback "stop" to send a signal to GPU driver to disable HDR might fix the issue? But Madvr should be doing it already and after switching off HDR content my TV reports SDR content, not HDR so I don't know... [/QUOTE]
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