Local Media Playback

Our typical HTPC testing flow involves playing back files encompassing a range of relevant codecs, containers, resolutions, and frame rates. A note of the efficiency is also made by tracking GPU usage and power consumption of the system at the wall. Over the last year or two, the focus has been on using Kodi and MPC-HC with its built-in LAV filters for benchmarking. Even though we have had non-HDR 4K clips for some time now in our test suite, we have not subject them playback at native resolution. In order to augment our test suite, we have added two files, a 4Kp25 HEVC HDR stream in a MKV container, and a 4Kp60 VP9 Profile 2 HDR stream in a WebM container.

Out of all the options we evaluated, the TCL 55P607's in-built Roku platform is the only one capable of handling Dolby Vision videos. However, when we tried to play back a sample file, the Roku interface stalled in the retrieving stage after the appearance of the Dolby Vision logo.

The TCL 55P607 Roku Media Player App - Unable to Handle Local Dolby Vision Files

Due to the absence of reliable open-source editing and decoding tools for Dolby Vision in the PC space, its testing with local media files will have to wait.

The Roku Media Player app continues to be a disappointment for users with anything other than the standard H.264 / HEVC-based camcorder files. The following recorded clip shows its failure with some interlaced MPEG-2 and H.264 clips in TS containers. VC-1 is also not supported.

On the plus side, we have automatic switching to HDR for local files which have HEVC HDR content. On the othr hand, a VP9 Profile 2 HDR clip did not generate the mode switch.

We tracked the power consumption of the TV while the Roku interface tried playing back the various files in our test suite. It was not much of a surprise to find that Roku fails to play back many of the streams. The graph segments below corresponding to the files that didn't play back are just the display remaining idle in the Roku USB Player interface.

The NVIDIA SATV supports all files in our test suite except the one encoded in VP9 Profile 2. With Kodi, we even see the HEVC HDR file being decoded and sent to the display with the appropriate mode switch.

The NVIDIA SHIELD Android TV Supports HDR Playback with Local Files

The power consumption of the SATV was tracked during the playback of each file in our test suite using Kodi 17.6. The segment corresponding to the VP9 Profile 2 file is just the duration for which the audio track was decoded and the Kodi UI remained idle.

Moving on to the PC space, we first compare the DXVAChecker outputs for the three systems. The Zotac EN1080K with its GTX 1080 GPU does not support hardware decoding of VP9 Profile 2 videos. Even if a HDR stream were to be available, the system plays back only the non-HDR versions with the desktop in HDR mode.

The Absence of VP9 10-bit Profile 2 Decoding in the GTX 1080 is the Only Odd Spot (from L to R: ASRock Beebox-S 7200U, Zotac ZBOX MAGNUS EN1080K, and the Intel NUC7i7BNHX1)

We found the native Microsoft Movies & TV app to be capable of playing back HDR videos with the desktop in HDR mode. A comparison of playback using two different players in that mode is shown below.

However, the playback of HDR files in non-HDR mode using the Microsoft Movies & TV App results in messed up colors. As such, we don't recommend the Movies & TV app for HDR file playback under all circumstances.

It is possible to use the madVR renderer in conjunction with a suitable player to shift the display to HDR mode independent of the OS setting. It is also supposed to bring the display back to the original state when exiting. We tested it out with MPC-HC and madVR v0.92.10 on the Zotac EN1080K. On the KBL-U systems, using madVR as the renderer resulted in evident dropped frames irrespective of the setting. On the Zotac EN1080K, we found that the latest NVIDIA driver release (which we absolutely had to use for Netflix 4K playback) seemed to have some issues with the restoration of the previous mode. With certain settings, the colors seemed to get crushed significantly after madVR triggered the mode change.

In fact, the only reliable combination in which we could get playback of the files in the appropriate mode was to set the OS toggle for HDR, and allow madVR to pass through the HDR metadata directly to the display (something that the madVR author specifically mentions as unsuitable for purists). We do not have automatic mode switching or even identification of HDR when using Kodi (as of v17.6). With madVR and MPC-HC, it is possible, but the consumer experience may vary.

In our opinion, HDR local media playback is yet to reach a stable state with commonly used software combinations. CyberLink's PowerDVD 17 also supports automatic HDR mode switch for playback of local files on Intel GPU-based systems. We found that it worked well in both of the KBL-U PCs, but, PowerDVD unfortunately refused to play back the VP9 Profile 2 files on those systems.

The power consumption of the three PCs during the playback of each file in our test suite using Kodi 17.6 was recorded. The same was done using the Microsoft Movies & TV app also, but, we found significant power consumption change (up to 10W at the wall) when the control overlay appeared on the screen. As such, we believe that the Microsoft Movies & TV app is not a reliable way to determine media processing efficiency of any system.

A similar graph for the madVR playback case in the Zotac ZBOX EN1080K (with OS HDR toggle set and madVR configured for HDR passthrough in full screen windowed mode) is presented below.

The power consumption numbers were also graphed for the PowerDVD playback case using the two KBL-U systems.

In general, we find that the Zotac system consumes a lot of power, but, it also performs a lot better compared to the KBL-U systems when advanced HTPC requirements like madVR rendering are considered. The HDR ecosystem is just getting started and we are waiting for things to reach a more matured state before doing a detailed analysis of the playback of local HDR files in PCs.

Netflix Streaming Configuring a UHD Blu-ray Playback System
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  • Reflex - Thursday, December 28, 2017 - link

    Again, you made the claim he gave a "$2000 HTPC reccomendation" as part of the article. He did not. He merely listed it as an option for those focused on gaming. You lied. You can spew all sorts of crap into as many paragraphs as you wish, but you have no credibility when you willfully lie about the contents of articles simply to 'prove' whatever point you somehow think you are proving.

    As to the rest, spend some time on AVSForums and you'll learn what is budget, midrange and high end for a 'home theater', rather than what you think you can cobble together with your home CNC setup and 'custom networking protocols'.

    You are the biggest joke on this site since Steve Lake/Lord Raiden.
  • ddrіver - Thursday, December 28, 2017 - link

    Guess they're not important enough to show up when you look for "budget receiver" on Google huh? Stop trying to cover up the mess. There are options between $100 and $1million. But almost every normal person will agree that $1000 is not "budget". That's why every article and review out there confirms what I'm saying: $300-$500 is what most regular people call "budget".

    But just to show you how unbelievably dumb you are I actually searched AVS Forum for "budget receiver". Guess what was the most commonly recommended price range... You probably guessed wrong. It's between $300-$500, with very, very, VERY few exceptions at $600-$700.

    Like this: http://www.avsforum.com/forum/gtsearch.php?q=budge...
    Or this: http://www.avsforum.com/?s=budget%20receiver

    Come on, keep making that point =)). I'm sure you can make a bigger ass of yourself.
  • ddrіver - Thursday, December 28, 2017 - link

    BTW, you're so focused on insulting me and proving I'm wrong that you don't even realize your own arguments contradict your case. That's just pathetic. You're willing to make a fool of yourself and ignore all common sense and evidence in your attempts to just contradict me.

    A $1000 receiver isn't budget. It just isn't. Budget is another word for cheap but still reasonably OK. And I was actually looking for a good recommendation for a home theater setup, at least the receiver and speakers part. I expected some info about a budget setup. $1000 just for the receiver? Yeah, he mentions another cheaper (~$500) receiver but that doesn't help sine I basically have to read the details elsewhere. So how is that an article about a budget setup again?
  • Bullwinkle-J-Moose - Thursday, December 28, 2017 - link

    ddriver, For BUDGET Home Theater......

    Check the comparisons and reviews of PreSonus Eris Powered 5 and 8" Monitors to the JBL LSR305 and 308 on Youtube (I chose the JBL)
    (Room size will determine which one you need)

    2nd place>
    KRK are too colored and boomy for me and Yamahas HS5 and HS8 are considerably more expensive for 2nd place sound

    3rd place> There is no 3rd place!
    ---------------------------------------------
    I also noticed you mentioned > "A receiver is an integral part of a home theater."

    WHY?
    For those who make the computer their central repository of all things Media to keep their setup "Minimal", I would think that a receiver would only have value for those who value DRM Lockdown and clutter
  • Reflex - Thursday, December 28, 2017 - link

    1) I don't have to prove you wrong, you do that effectively on your own.
    2) The article also listed a receiver in the price range you suggest is budget as well. You seem unwilling to acknowledge that fact. Weirdly enough, you give more attention to the very brief mention of a gaming HTPC (on a primarily PC based site no less!) than the fact that they actively discussed the even cheaper option in the article itself and in the final table. Seriously, selection bias much?

    And yes, I never claimed there was no such thing as a receiver for less than $1k. However even at $1k, its a budget receiver. It is in no way out of scope for an article like this. $1k is below what is considered mid-range in this space for actual 'home theaters' rather than "TV and receiver in the living room" class setups.
  • Bullwinkle-J-Moose - Thursday, December 28, 2017 - link

    Reflex says....
    (on a primarily PC based site no less!)
    ---------------------------------------------------
    Sorry Reflex but this is clearly not a PC based site!

    A "Personal" Computer would let "you" control every aspect of your own system

    This site is based around Locked Down DRM Spyware Platforms that prevent the end users from securing their own systems

    DRM destroys the National Security of All Countries by keeping those back doors open

    Try using the Internet without letting Microsoft continually make changes to "your" computer or monitoring everything you do while using Spyware Platform 10

    Whenever you must rely on strangers to provide YOUR security, you have no security

    The PC died with Sandy Bridge
  • Reflex - Friday, December 29, 2017 - link

    You are welcome to your opinion, but others are not required to subscribe to it.
  • Bullwinkle-J-Moose - Friday, December 29, 2017 - link

    "You are welcome to your opinion, but others are not required to subscribe to it."
    ---------------------------------------------------------------------------------------------------------
    As are you
    When you say "Real Home Theater"
    How does that differ from "ANY" Home Theater

    Must we conform to 1000 different "Standards" to make it "Real" ?

    Must it have the latest DRM Lockdown ?

    What "EXACTLY" makes your Home Theater "Real" and mine "not so much" ?

    We would like to hear your expert opinion on the matter before we destroy it
  • Reflex - Friday, December 29, 2017 - link

    I usually refer to what people consider the definition on home theater focused websites and forums. Obviously you are free to define home theater however you like.

    Most people who build a home theater these days want at least Dolby 5.1/7.1 with many opting for the better positional audio of Dolby Atmos. Most people who build a home theater these days want 4k resolution with at least HDR10 with some opting for the slightly superior Dolby Vision standard.

    If your goals are to display content optimally, and playback audio optimally, equipment choices are dictated by those factors within the budget you have permitted yourself. All the rest is just noise. I don't give a damn if my content is DRM'd so long as the equipment I select can play it back reliably. I'm not even sure what 'DRM Lockdown" means in this context if everything I set up to play back the content can play it. I don't really care about hypotheticals or other scenarios that I am not interested in, nor are most people in this space given that as you point out those standards generally win out in the market.

    As for the value judgement, I've made zero comments about your home theater and its 'realness'. If you consider it real, more power to you. But again, I don't have to subscribe to your interpretations, recommendations or priorities when discussing or making recommendations on this area myself. As with most people, I go with what the prevailing standards are and it is reasonable to judge articles, content and conversations based on that understanding. If everyone builds their own definition of a term and insists others cater to only their definition we lose the ability to discuss any topic rationally.
  • Bullwinkle-J-Moose - Friday, December 29, 2017 - link

    "I usually refer to what people consider the definition on home theater focused websites and forums. Obviously you are free to define home theater however you like."
    -------------------------------------------------------------------------------------
    That's a valid point

    After defining and building the modern 3-Channel System upon which all these current standards are based (3.1 / 5.1 / 7.1 etc), it's nice to know I can have my own opinion on the matter

    The only standard now is that there is no standard!

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