Intel NUC - Haswell (4th Generation CPU) - Printable Version +- Kodi Community Forum (https://forum.kodi.tv) +-- Forum: Discussions (https://forum.kodi.tv/forumdisplay.php?fid=222) +--- Forum: Hardware (https://forum.kodi.tv/forumdisplay.php?fid=112) +--- Thread: Intel NUC - Haswell (4th Generation CPU) (/showthread.php?tid=176718) Pages:
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RE: Intel NUC - HTPC (Haswell Late 2013 edition) - lmyllari - 2013-11-25 (2013-11-25, 03:31)Ravetrancer Wrote: Did u see my post about how to turn off the Nuc without it rebooting again?I will test when I have a chance. The system is starting to work well enough that I'm not the only one around the house using it. Quote:After disabling Vaapi, HD material works.I'm not sure what you're saying. Use either VA-API or multithreaded decoding - do not enable both at the same time. I would prefer hardware decoding (uses less power -> less heat; more CPU available for other tasks). At the moment I'm using software decoding for better quality. My aim is to get the same quality with hardware decoding. RE: Intel NUC - HTPC (Haswell Late 2013 edition) - Mangoes - 2013-11-25 (2013-11-25, 04:00)lmyllari Wrote: I would prefer hardware decoding (uses less power -> less heat; more CPU available for other tasks). At the moment I'm using software decoding for better quality. My aim is to get the same quality with hardware decoding. Yes, the vaapi decoding is lower quality than software. It sometimes shows some blockiness in the picture. I am only using vaapi because the i3 is not strong enough to decode the 2D streams in the 3D blurays. With the i5 I would use software all the way. What do you mean with "My aim is to get the same quality with hardware decoding". Does this mean you think you can do something about this? RE: Intel NUC - HTPC (Haswell Late 2013 edition) - scarecrow420 - 2013-11-25 Question regarding the built in IR: Is the sensor in the front of the case or is it on an extension lead? Eg if you want to VESA mount a haswell NUC behind a TV screen what can you do about the IR remote signal getting to the box? With a normal USB IR receiver, you can run use the USB lead to locate it some distance away from the actual HTPC unit, can we do that with the NUC or is it built in to the case only? RE: Intel NUC - HTPC (Haswell Late 2013 edition) - lmyllari - 2013-11-25 (2013-11-25, 04:17)Mangoes Wrote:Yes.(2013-11-25, 04:00)lmyllari Wrote: I would prefer hardware decoding (uses less power -> less heat; more CPU available for other tasks). At the moment I'm using software decoding for better quality. My aim is to get the same quality with hardware decoding. The decoding itself should be bit exact; I would be very surprised if it wasn't. The problems are with the RGB range expansion. Video decoder outputs YCbCr data, where Y (luminance) is in the range 16-235. Both Intel hardware decoder and FFmpeg software decoder work the same here. The difference lies in what happens next. With software decoding, xbmc gets the decoded frame in YCbCr format, calculates coefficients taking into account the colorspace and desired output range, and converts to RGB using these. When xbmc requests the decoded frame from VA-API, it specifies the colorspace (bt.601 or bt.709) and gets RGB data. There is no parameter for RGB output range, so VA-API always converts to full range. This means that luminance gets expanded from 16-235 to 0-255 and this is where the problem lies. This creates banding in the output signal. With software decoding, we can avoid the conversion from 16-235 to 0-255 and get nice clean output. My plan is to add a range parameter to VA-API and modify it to support limited range (16-235) RGB output. Then xbmc rendering and gpu drivers need to be checked to make sure they pass this through unmodified. The latter part I have already prototyped using the "Video 16:235 pass-through" xrandr rgb range setting. All of this is for TV users. PC monitors usually want full range signal. That can also be improved by using limited range output from decoder, and dithering when expanding to full range. For software decoding this should be pretty straightforward by adding dithering to the colorspace conversion shader. For hardware decoding I'm not yet sure how it would work. The dithering should not be done before scaling. There are also changes coming with the VA-API post processing. If the decoder output goes through deinterlacing, other post processing, colorspace conversion and scaling, it gets interesting. If all of that could be done with 10bit resolution and dithered at the end, that would be the best for accuracy. I'm not sure if the hardware supports that, and I'm pretty sure the drivers don't. RE: Intel NUC - HTPC (Haswell Late 2013 edition) - BLKMGK - 2013-11-25 (2013-11-25, 04:27)scarecrow420 Wrote: Question regarding the built in IR: Is the sensor in the front of the case or is it on an extension lead? Eg if you want to VESA mount a haswell NUC behind a TV screen what can you do about the IR remote signal getting to the box? With a normal USB IR receiver, you can run use the USB lead to locate it some distance away from the actual HTPC unit, can we do that with the NUC or is it built in to the case only? Sensor is in the front of the device, if mounted on the back of a set it will be a problem yes. RE: Intel NUC - HTPC (Haswell Late 2013 edition) - BLKMGK - 2013-11-25 (2013-11-25, 02:21)arokh Wrote:(2013-11-25, 01:47)BLKMGK Wrote: Is anyone playing with a NUC and NOT using OE? So far I've had issues getting the boot record properly setup but got past that. Now I'm trying to get sound working over HDMI and as usual it's a hassle so I'd like to network with others. I've yanked PulseAudio off the load but ALSA is proving troublesome per usual... Sadly this isn't working for me. I setup both an asound.conf in /etc and an .asoundrc in my home directory - no joy. Alsamixer only shows SPIDIF as my default (still) and the usual analog on the second card. Speaker test gives the output below. None of the GUI mixers show any outputs for some reason or fail to run. I suspect this is something silly, I'm still learning Linux - the hard way - and this isn't my first head banger with ALSA. Having trouble getting my shell script to execute on boot to fixup the remote too but that's far less critical and likely even more silly! Code: speaker-test 1.0.25 Trying this all on Mint but as I said before not wedded to it however I DO want a full desktop and dev environment loaded so OE isn't my first choice at this point. RE: Intel NUC - HTPC (Haswell Late 2013 edition) - micoba - 2013-11-25 As there are still no Nuc Kits available in Germany (at least at the moment), I'm thinking of buying the UCff version (pure mainboard without a case). Is it possible to turn the nuc on without the case, perhaps with a jumper ("always on")? Can anybody provide a link to a case manufacterer, that sells nuc haswell cases? Google didn't find ANY! Please! RE: Intel NUC - HTPC (Haswell Late 2013 edition) - twelvebore - 2013-11-25 Looks like the bare motherboards are now available http://www.scan.co.uk/products/intel-nuc-d34010wyb-intel-core-i3-4010u-dual-ddr3-mdport-mhdmi-ucff-oem http://www.scan.co.uk/products/intel-nuc-d54250wyb-intel-core-i5-4250u-dual-ddr3-mdport-mhdmi-ucff-oem RE: Intel NUC - HTPC (Haswell Late 2013 edition) - micoba - 2013-11-25 (2013-11-25, 10:50)twelvebore Wrote: Looks like the bare motherboards are now available Was that a direct reply to my post? Because that was exactly what I was referring to! But I can't find suitable cases, so the pure mainboards are useless, I guess!? RE: Intel NUC - HTPC (Haswell Late 2013 edition) - zag - 2013-11-25 (2013-11-25, 11:06)micoba Wrote:(2013-11-25, 10:50)twelvebore Wrote: Looks like the bare motherboards are now available Nice! where do you get the power leads from though? RE: Intel NUC - HTPC (Haswell Late 2013 edition) - micoba - 2013-11-25 Finally they are available in Germany, but only limited numbers! See here: http://geizhals.de/intel-nuc-kit-d34010wyk-boxd34010wyk-a1006841.html RE: Intel NUC - HTPC (Haswell Late 2013 edition) - twelvebore - 2013-11-25 (2013-11-25, 11:06)micoba Wrote:(2013-11-25, 10:50)twelvebore Wrote: Looks like the bare motherboards are now available No, it wasn't, it was just for general information to anyone interested. Intel use the word 'kit' to refer to the version that ships in a case with a power supply, so I thought you were referring to something else. RE: Intel NUC - HTPC (Haswell Late 2013 edition) - arokh - 2013-11-25 (2013-11-25, 05:53)BLKMGK Wrote: Sadly this isn't working for me. I setup both an asound.conf in /etc and an .asoundrc in my home directory - no joy. Alsamixer only shows SPIDIF as my default (still) and the usual analog on the second card. Speaker test gives the output below. None of the GUI mixers show any outputs for some reason or fail to run. I suspect this is something silly, I'm still learning Linux - the hard way - and this isn't my first head banger with ALSA. Having trouble getting my shell script to execute on boot to fixup the remote too but that's far less critical and likely even more silly! Well, there's your problem then. Alsamixer should show your PCM device, sounds like you don't have the correct modules loaded. They should be by default on any modern distro, not sure why that's not the case for you. Quote:Trying this all on Mint but as I said before not wedded to it however I DO want a full desktop and dev environment loaded so OE isn't my first choice at this point. Try the latest Mint version, or the latest Ubuntu should work fine as well. When it comes to Haswell support, you are better off with a bleeding edge distribution. RE: Intel NUC - HTPC (Haswell Late 2013 edition) - micoba - 2013-11-25 Do the haswell nucs need the same power cords like the old nucs? Is so, than I'm good to go! RE: Intel NUC - HTPC (Haswell Late 2013 edition) - twelvebore - 2013-11-25 Looks like Akasa will be doing a version of their fanless case for the Haswell NUC http://www.akasa.com.tw/update.php?tpl=product/product.detail.tpl&no=181&type=Chassis&type_sub=NUC&model=A-NUC03-A1B |