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22nd February 2017, 18:28 | #42681 | Link |
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Damien147, just did another test with another video source. 3840x2160 23.976fps 51.4 Mb/s bitrate HEVC.
Hardware decoder: none (software). 65% load on 4 cores. Hardware decoder: DXVA2 (copy-back). 15% load on 4 cores. Hardware decoder: DXVA2 (native). Black screen. Perfect playback with full queues. |
22nd February 2017, 19:10 | #42682 | Link |
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Just finished with Display Driver Uninstaller and testing.Same results.
with HEVC: DXVA2 (copy-back):Jerky playback(slow downs,skips) DXVA2 (native): black screen Note that with other non HEVC sources I get smooth playback with DXVA2 (copy-back). As I said I can get smooth HEVC playback with 4k ~25Mb/s and lower with hardware decoder to none. I don't get why pose gets smooth playback with DXVA2 (copy-back) and HEVC as we have same GPU. DXVA2 (copy-back) would be perfect for me if it worked well with HEVC. @pose ....and if you play the same file with EVR on DXVA2(native) you won't get black screen.It will work fine. Last edited by Damien147; 22nd February 2017 at 20:27. |
22nd February 2017, 21:01 | #42684 | Link |
X Cinema Projectionist NZ
Join Date: Feb 2006
Location: Auckland NZ
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Madshi is it possible to sometime get zoom steps up to the start level of (5) in small increments please?
e.g. 1,2,3,4,5 When I screen older scope films 2.40 like Ben Hur, I use zoom 5 (the smallest we have) to zoom the wider than normal black bars to fill my scope 2.35 screen. Zoom 5 is actually too aggressive and overshoots the 2.35 scope screen too much and Im cropping way more than I really want. I cant use my Lumagen Pro to do the zoom either as its not activated on the Pro models, and I prefer to do it with madvr anyway, keeps all the scaling in one place. Its not a feature that probably most here would care about, but for those with 2.35 screens who screen older films it would really be great to have smaller steps on the zoom up to 5. Thank you for everything else you bring to the table, its a very interesting journey madvr... |
22nd February 2017, 21:33 | #42685 | Link |
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Probably but i have no use for it anyway. My CPU is good enough for playback of an average non bitrate starved 4K 24fps video. For 60fps videos ill just use DXVA2 copy-back. I dunno whats your problem, man. Try resetting your madVR settings to their default (restore default settings.bat) if you didnt yet.
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22nd February 2017, 21:58 | #42686 | Link |
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Resetting doesn't do anything.
The problem is that HEVC DXVA2(copy-back) works for you and not for me while having same GPU. I can play everything I throw at Madvr till low bitrate 4k HEVC. I guess I'm gonna settle with hardware decoder to none and lower that 30Mbps 4k HEVC files.For high bitrate 4k HEVC I am gonna use EVR and dxva2(native) that works. (it's not the solution in the long run) If DXVA2(copy-back) was working properly with me everything was gonna be great.The strange is that with other non HEVC sources DXVA2(copy-back) works ok. Last edited by Damien147; 22nd February 2017 at 22:24. |
22nd February 2017, 22:30 | #42689 | Link |
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I think I can confirm Damien's report.
Source: Astra SES Demo Channel (HEVC 10bit UHD 50p) LAV (0.69) DXVA2 native => Blackscreen LAV DXVA copyback => CPU load immediately rise to >70%, DXVA queue is @1-2/12 It works fine with EVR and DXVA CB with ~30% CPU load. I think my CPU is too slow for this but I dont understand why it is so much more demanding with madVR. P.S. My GPU: AMD RX460, newest crimson driver, Win8.1 64bit P.S.S. Render times are ok, because I use very fast madVR settings for my test. Last edited by nussman; 22nd February 2017 at 22:33. |
22nd February 2017, 22:37 | #42690 | Link | |||
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22nd February 2017, 22:38 | #42691 | Link | |
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22nd February 2017, 22:40 | #42692 | Link | |
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Quote:
Does AMD even do HEVC10 DXVA decoding? I thought they didn't have that yet. If they do, its certainly only hybrid though, which suffers quite a bit from a slow CPU. If you see a big difference when just switching the renderer, then some of the CPU intensive settings in madVR might be related, like madshi mentioned above, black bar detection perhaps.
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LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 22nd February 2017 at 22:43. |
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22nd February 2017, 22:51 | #42693 | Link |
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the RX 480 can do hardware HEVC 10 bit decoding there is no question. the save limited was at about 125 mbit 60 FPS it even takes time to fill the CPU queue of 128 showing the limited of the decoder. the RX 460 should be the same if i'm not mistaken Aleksoid1978 tested/have a RX 460.
i do some blind guesses here. what PCIe speed is used? and does the card have 2 or 4GB Vram? maybe the newest driver is broken. i returned my RX 480 about a month ago so i have no clue how they perform with new driver. |
22nd February 2017, 23:02 | #42694 | Link | |
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Location: Auckland NZ
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Quote:
This is what I use labelled Zoom 5. This removes the black bars on older 2.40, 2.55 titles like Ben Hur, but its removing too much. Im wondering if we could have some smaller steps up to 25% please, maybe 5%, 10%, 15%, 20%, then 25%. Sorry for the confusion.... |
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22nd February 2017, 23:02 | #42695 | Link | |
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Quote:
With DXVA2(copy-back) I don't get any limitation with CPU or GPU with bottleneck in mind. edit: @nevcairiel I don't know if you are referring to me but cpu has SSE4.2. @huhn I don't know if you are referring to me too but mobo PCIe speed is 2.0 and 4GB Vram Last edited by Damien147; 22nd February 2017 at 23:07. |
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22nd February 2017, 23:03 | #42696 | Link |
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No black bar detection enabled here.
I think I got it. If I disable P010 (and P016) output in LAV than cpu load decrease at~3x% and its playing just fine (with filled queues etc.). madVR reports NV12, 8bit then. Last edited by nussman; 22nd February 2017 at 23:28. |
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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