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Old 12th May 2018, 10:02   #22861  |  Link
mzso
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Quote:
Originally Posted by huhn View Post
could be a bad joke too i'm mean you can use dolby atmos headphone for 7.1 which is about as bad as dolby headphone...
Why do you say such nonsense? Dolby headphones is great. It's the best commercial multi channel virtualization technology. (Not as good as the free stuff someone threw together from free HRIR datasets, but still better than all others.)

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Originally Posted by Asmodian View Post
"Dolby Access" in the play store. The headphone decoder is also only available through this app, as far as I can tell, though it is free.
How does this work? Is some sort of system level DSP? Or I need to use a dshow codec in the player?
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Old 12th May 2018, 10:09   #22862  |  Link
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There is nothing special about those stuff it is basic convolution and can be done with ffmpeg already.
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Old 12th May 2018, 10:12   #22863  |  Link
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Quote:
Originally Posted by mzso View Post
Why do you say such nonsense? Dolby headphones is great. It's the best commercial multi channel virtualization technology. (Not as good as the free stuff someone threw together from free HRIR datasets, but still better than all others.)
sorry i'm not going into detail with dolby headphone and the bad implementation of dolby atmos headphone with 7.1 input.
dolby headphone has major processing issue which can easily clip this alone is enough.

if you compare a native atmos implementation and a dolby atmos 7.1 to phones there is nothing to compare the quality just bad.
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Old 12th May 2018, 10:13   #22864  |  Link
mzso
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There is nothing special about those stuff it is basic convolution and can be done with ffmpeg already.
Well there are no effects in LAV so it does little good to me.

(Even if it's basic convolution, the availability of a decent surround virtualization is lacking, particularly in foss software. )

Last edited by mzso; 12th May 2018 at 10:27.
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Old 12th May 2018, 21:13   #22865  |  Link
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Originally Posted by mzso View Post
How does this work? Is some sort of system level DSP? Or I need to use a dshow codec in the player?
I think it is a system level DSP and am not sure what it requires for decoding.
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Old 15th May 2018, 07:51   #22866  |  Link
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Quote:
Originally Posted by mzso View Post
Well there are no effects in LAV so it does little good to me.

(Even if it's basic convolution, the availability of a decent surround virtualization is lacking, particularly in foss software. )
Don't even get me started, I've never seen a single inclusion of even a good limiting amp in free video software in all the years people have been asking for better volume control. Every music player has a half-dozen plugins or settings to do it with no fuss, and it's implemented for ac3 decoding, so I have no idea why it's impossible to get it into a directshow filter or MPC-BE in a generic fashion. Even Audacity, of all things, has nothing similar, and at best has a two-step limit-then-amplify (manually calculating how much), and of course, Audacity is still stuck on a 4-year-old build of ffmpeg, so good luck opening Opus or Tak.
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Old 15th May 2018, 08:53   #22867  |  Link
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Quote:
Originally Posted by foxyshadis View Post
so I have no idea why it's impossible to get it into a directshow filter
There was at least one: DynEQ (formerly known as DeDynamic), I think it was a link on doom9.
It was the best for me for 2ch output.
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Old 15th May 2018, 13:26   #22868  |  Link
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Don't miss the point that (IIRC...) Dolby Digital (AC3) decoders are able to use metadata in the bitstream to know immediately recommended values already stored by the encoder. May they just be the exponent of a floating point representation of loudness or DialNorm values, or even respect acoustic room models set up in the AC3 encoder, I am not sure; but there is definitely an advantage over dynamic range control for unexpected miscellaneous audio which requires a look-ahead window and introduces a latency.
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Old 15th May 2018, 16:57   #22869  |  Link
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Don't miss the point that (IIRC...) Dolby Digital (AC3) decoders are able to use metadata in the bitstream to know immediately recommended values already stored by the encoder. May they just be the exponent of a floating point representation of loudness or DialNorm values, or even respect acoustic room models set up in the AC3 encoder, I am not sure; but there is definitely an advantage over dynamic range control for unexpected miscellaneous audio which requires a look-ahead window and introduces a latency.
That's handy when you're in a living room, but for instance, watching Lawrence of Arabia on a road trip some years back was an exercise in frustration, as nothing I could do could get the level of the dialogue up above the road noise with the headphones I had, short of badly distorting the music. It's also only applicable to AC3, which I try to never use. A decent hard limiter only needs about 10 ms or so of latency, well below the usual decoding queues, and again, it'd be a tradeoff the viewer could make.
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Old 15th May 2018, 18:33   #22870  |  Link
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Well, I programmed one with 0 latency (BeSweet's "booster"), but audiophiles will complain that it distorts the sound.
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Old 16th May 2018, 15:05   #22871  |  Link
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LAV for XP, as for Vista -10 i don't know. https://uploadfiles.io/9ke45
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Old 19th May 2018, 09:04   #22872  |  Link
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Hi folks, Im on MPC-HC 0.71.25, Windows 7, GTX960 (391.35). Playing back HEVC UHD videos with DXVA Copy back and GTX960 as active decoder, I get 120ms rendering times with hundreds of dropped frames. Madvr is set to low quality algorithms (Lanczos).

Is the Nvidia driver faulty? Playback worked a couple of weeks ago.
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Old 19th May 2018, 11:58   #22873  |  Link
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Perform a system restore to a couple of weeks ago then and work it out from there.
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Old 19th May 2018, 12:44   #22874  |  Link
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if your system hasnt changed much in two weeks that might be good advice, its worth a quick reinstall of MADVR first though to see how it plays with default settings. If that doesnt work then a reinstall of the NVIDIA driver.

I'd also check to see what MS updates you've pickup up, I have mine disabled as I'm avoid the latest big update like the plague.
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Old 19th May 2018, 17:43   #22875  |  Link
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Hello. Using D3D11 decoding I have a black screen on some videos. Statistics included. DXVA2 works fine.

Video 1 (Works)
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 46 min
Bit rate mode : Variable
Bit rate : 24.4 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.490

Video (Doesn't Work)
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 1 min
Bit rate mode : Variable
Bit rate : 33.1 Mb/s
Maximum bit rate : 35.5 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.665

Video 3 (Doesn't Work)
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 2 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Format settings, GOP : M=1, N=10
Muxing mode : Container profile=@0.0
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 42 min
Bit rate mode : Variable
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Title : MPEG-4 AVC 32145 kbps 1920*1080p / 23,976 fps . 16:9. High Profile 4.1
Default : No
Forced : No

Video 4 (Doesn't Work)
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 24 min
Bit rate : 9 567 kb/s
Width : 1 920 pixels
Height : 1 040 pixels
Display aspect ratio : 1.85:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.200
Stream size : 5.66 GiB (81%)
Writing library : x264 core 146 r2538 121396c
Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=9567 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Language : English
Default : Yes
Forced : No

Video 5 (Doesn't Work)
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1 h 39 min
Bit rate mode : Variable
Maximum bit rate : 37.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Video 6 (Doesn't Work)
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : VC-1
Format profile : Advanced@L3
Codec ID : 234
Duration : 1 h 58 min
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
format_identifier : VC-1
Source : 00001.m2ts

Code:
MPC-HC (64-bit)
---------------

Build information:
    Version:            1.7.16 (40904c4ad)
    Compiler:           MSVC v19.13.26129
    Build date:         Apr  4 2018 00:13:21

LAV Filters:
    LAV Splitter:       0.71.0.25
    LAV Video:          0.71.0.25
    LAV Audio:          0.71.0.25
    FFmpeg compiler:    MinGW-w64 GCC 7.3.0

Operating system:
    Name:               Windows NT 10.0 (build 17134)
    Version:            10.0 (64-bit)

Hardware:
    CPU:                Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
    GPU:                NVIDIA GeForce GTX 1060 6GB (driver version: 24.21.13.9764)
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Old 19th May 2018, 18:42   #22876  |  Link
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can you make a sample from one of these files that give you a blackscreen a couple sec should be enough.
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Old 19th May 2018, 22:38   #22877  |  Link
TheElix
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Quote:
Originally Posted by huhn View Post
can you make a sample from one of these files that give you a blackscreen a couple sec should be enough.
Can you please suggest a program to do this? I'm so rusty right now.

Okay, that's weird. Now it's working on my primary display (which is a monitor). It doesn't work on secondary display (projector). The projector was working as a single device (no shared screen) when I tested. It seems I need to do more tests.
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Old 20th May 2018, 07:47   #22878  |  Link
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Is the monitor on the Nvidia and the projector on onboard? Or vice versa? Sounds like an issue where it's being decoded on one and not able to be transferred to the other.
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Old 20th May 2018, 12:00   #22879  |  Link
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Bug: wrong black levels with (MPC-BE's) EVR-CP with some files. Sample

MPC-BE's internal video decoder outputs correct black levels with all EVR, EVR-CP and madVR
LAVVideo decoder outputs wrong black levels with EVR-CP, but correct black levels with EVR & madVR

LAVFilters-0.71.0-35 MPC-BE 1.5.2.3648 Windows 7 x64
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Old 20th May 2018, 14:45   #22880  |  Link
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That file is pretty ordinary yuv420p h264 with NV12 output, its in no way that I can tell special.

If it works with multiple renderers, but not with one, what is the most logical conclusion to take?
Either your configuration is bonkers or the renderer is faulty.
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