FAQ from the official VRROOM manual

FAQ

What is the difference between Splitter and Matrix option, what are the options for each mode?

The below picture represents the available options for both mode.

Can we pass-through 4K60 4:4:4 or any HDR signal and have one output at lower resolution?

Yes, when connected correctly to the right downscale output port (TX1) and using the right mode (OP mode 3), VRROOM will automatically scale down UHD to FHD. Similarly it can scale up FHD to UHD if required by the connected SINK to the upscale port (TX0).

My display is supposed to accept 4K60 4:4:4 signals but it does not work?

For most UHD TV set we tried, there are always extra configuration options to active in order to achieve a 4K60 4:4:4 600MHz link. For ex, on samsung: in order to enable the 444 colorspace for 4k in Samsung TV’s you must go to "settings" and "hdmi" and "UHD color" and enable it. Then also you must assign the HDMI port1 as "PC" in the tools menu. Only after these two steps will 600MHz be accepted. Similar activation tricks are required on most UHD TV’s. Additionally, most UHD TV’s only have specific ports that are 600MHz capable. Please refer to your display user manual for details.

I have a PC mode on my TV (or a PC monitor) what resolutions are supported for graphics mode?

All PC graphics mode within the 1200MHz bandwidth are supported, including ultra-high resolution such as WQSXGA, QUXGA, QFHD, WQUXGA, 4K, 8K.

What output resolution does the VRROOM support in HDTV mode?

All known SD, HD, Full HD and UHD formats are supported including: 480i50,480i60, 480p50, 480p60, 576p50, 576p60, 720p50, 720p60, 720p100, 720p120, 1080i25, 1080i30, 1080p24, 1080p25, 1080p30, 1080p48, 1080p50, 1080p60, 1080p72, 1080p75, 1080p96, 1440p50, 1440p60, 2160p24, 2160p25, 2160p30, 2160p50, 2160p60, 2160p100, 2160p120 (these are examples only, anything within the 1200MHz bandwidth is supported.)

What version of HDMI does the VRROOM work with? Do I need HDMI 1.3/1.4a/2.0b/2.1? Does it matter?

It does not matter. HDfury VRROOM works with any version of HDMI from 1.0 and up.

Do I need to set anything special in my HDMI source device to set the resolution correctly?

No. The HDfury VRROOM will be detected as a 2160p120 4:4:4 10b or 8K60 4:2:0 10b capable device by the source and it will always accept and process the highest quality stream from your source devices. There is no need to set the HDMI source to any specific resolution.

Is there any latency (delay) introduced to the signal?

Virtually none. The latency added is in the order of a few pixel clocks only. Nothing noticeable at all.

What about long HDMI cable runs? Can I expect issues?

For 600MHz users must use "high speed" cables, or 600MHz/18Gbps certified, ideally the length should be between 6ft and 12ft for proper 600MHz/18Gbps pass-thru. For 4K30, 1080p or less almost all cables are ok. HDfury VRROOM acts as a HDMI repeater device. So having HDfury VRROOM in the path will amplify and recover the signal. You should not need any passive (or active) HDMI amplifiers, especially if you put the HDfury VRROOM in the middle of your cable run. If you previously had to use an amplifier, the HDfury VRROOM can most likely take its place. The HDfury VRROOM has been used with 50 foot (and longer) HDMI cables without issues including copper, active or fiber solutions. For 1200MHz, make sure that you are using 1200MHz certified or tested HDMI 8K cable in copper or fiber tech if you plan to set up a 1200MHz/40Gbps link in your setup.

How are the new lossless audio formats via HDMI input handled? E.g. DTS-HD/MA and DD/E-AC3: Are they stripped down to DTS core or Dolby Digital respectively to fit the requirements of the S/PDIF standard?

Lossless audio is transmitted through HDMI output only. HDfury VRROOM does not compress or otherwise downconvert the incoming audio. Only stereo and 5.1 sound can be output via SPDIF output. The analog output supports stereo only.

How do I hook up the audio from the VRROOM?

The VRROOM has both analog and digital (TOSLINK) audio output in one connector labeled "SPDIF + L/R". It's a 2-in-1 connector meaning that you can plug in either a 3.5mm stereo analog jack or a digital mini-TOLINK (3.5mm mini-jack) cable and get stereo analog sound or 5.1 Dolby/DTS digital sound out of the VRROOM. See further below for pictures of both types of connectors/cables.

VRROOM 3.5mm mini-TOSLINK digital audio cable:

If you'd like to use a "regular" TOSLINK cable, use a 3.5mm Mini-TOSLINK to regular TOSLINK adapter:

A 3.5mm stereo audio cable can be used for connecting the VRROOM to a TV if you do not have a home theater setup (you only have 2 speakers in your TV):

FAQ CEC/ARC

Make sure your TV audio format is set to Bitstream or Dolby Digital unless your sound system is eARC or support multi-channel PCM.

For any CEC/ARC issues, you can try the below:

1. Turn TV OFF / wait a few minutes / Turn ON.
2. Unplug TV powercord / wait a few minutes / Replug TV powercord.
3. Turn TV CEC OFF then back ON (if many source at TV inputs, try adding them one by one slowly)
4. Unplug/Replug HDMI cable going to your ARC sound system.
5. Turn OFF and then back ON, VRROOM and Source.

HDMI cables need to be good enough, that's why first step is not VOLUME CONTROL or CEC or ARC. First step is to make sure SOURCE > VRROOM > DISPLAY play any content correctly without issue to make sure the HDMI LINK is SOLID, then only user should consider volume control / CEC / ARC.

Samsung CEC/ARC help: Visit here.

Vizio TV CEC/ARC help:

1. From the AUDIO menu on your TV, change the Digital Audio Setting to Dolby Digital or Bitstream.
2. From the AUDIO menu, disable the TV’s internal speakers.
3. From the SYSTEM menu, enable CEC Function.
4. From the CEC menu, select Device Discovery to register the sound bar with the TV.

The following steps are for use with a VIZIO TV, steps may differ by TV manufacturer. See your TV’s user manual for more information. If you want to use the volume buttons on the TV remote control to control the sound bar, enable System Audio Control from the CEC menu

To enable, disable, or adjust CEC settings:

1. Press the MENU button on the remote. The on-screen menu is displayed.
2. Use the Arrow buttons on the remote to highlight System and press OK. The SYSTEM menu is displayed.
3. Use the Arrow buttons on the remote to highlight CEC and press OK. The CEC menu is displayed.
4. Use the Arrow and OK buttons to adjust each setting:
   • CEC - Select Enable to use the TV remote to control CEC devices connected to HDMI. Select ARC Only for plug and play of an audio device connected to the HDMI ARC input. The ARC setting does not support video devices connected to the audio device (Select Enable to enable support for these devices). Select Disable to turn CEC off.
   • Device Discovery - Use this function to determine if your device is connected and supports CEC. (Required for Enable option only)
5. Press the EXIT button on the remote

Sony TV reset CEC command

From Sony manual: Unplug the AC power cord (mains lead) and wait for 2 minutes (3 minutes for models equipped with an OLED panel).

FAQ ATV4K

How should I set ATV4K if I’m trying to display DV content from LLDV source to a HDR10 display?

Video set to 4K Dolby Vision.
Match Range set to Off.
Results in everything being output in DV, when you have an HDFury device spoofing an LLDV display.

Video set to 4K SDR.
Match Range set to On.
SDR is output as SDR, HDR as HDR, and DV as DV (with the spoofing).

Note that when you start up the ATV4K the first time after configuring the LLDV EDID in the HDfury device, the ATV4K should bring up a prompt asking if you want to test for Dolby Vision compatibility. You need to pass this test before any LLDV would be output. Passing the DV test will set video to 4K Dolby VIsion, so you would need to reset it to 4K SDR if that is your preferred option.

Also, if you ever change the configured EDID, the ATV4K will notice and ask you to test for Dolby VIsion compatibility again. Once you pass the test with a particular EDID, the ATV4K will remember the next time you configure that EDID and not ask to test Dolby Vision again.

There is an additional option: Match Frame Rate that will output the same frame rate as the source is encoded rather than always upscaling to 4K60. Although the ATV4K currently does not support content encoded at true 24P. It will output true 24P as 23P that results in frame drops that may or may not be noticeable.

Netflix on ATV4K only show 5.1 titles?

One tip to save other Apple TV users some confusion, it may not say Atmos in the menu of the app (ex 5.1 in Netflix) you’re using at first, but as long as you see Atmos under audio settings, just begin playing content you know supports Atmos and the app will adjust. Prime Video and Netflix seems similar in this regard. As for titles we know have Atmos, Prime video has Jack Ryan, Netflix The Old Guard and Disney + the Mandalorian. Each of those is platform original and there for should be available in every region.

After having installed VRROOM, i am no longer able to control the sound system volume when using the ATV4K remote?

A: Re-sync the ATV4K remote with your ARC or eARC sound system.

TV does not turn off when i turn off ATV4K and/or sound continue to play when i turn off ATV4K

Some users also reported success by toggling above ATV4K option OFF>ON and some had success by toggling TV CEC OFF>ON.

Actually there is an interesting caveat. With Sleep set to any time period and you are on the Apple TV homescreen, using the TV remote will turn the Apple TV off. If you have something playing with sound (ex. Channels TV app or Plex) the Apple TV won't turn off. ATV4K behavior

Alternatively, if TV does not turn OFF from ATV4K, you can try this trick/tips: Here’s the deal with HDMI CEC on my LG OLED. The Apple TV will send the ‘On’ command through HDMI. But the TV will not accept any ‘Off’ commands through HDMI therefore the Apple TV will send an ‘Off’ command through the remotes IR. When turning off your ATV, keep holding the remote towards the TV and it will turn off the TV. Works every time.

I cannot get Atmos from ATV4K but I can from other source.

Make sure your Apple TV 4K Audio setting Change Format is turned off. If you had it turned on to get at least Dolby Digital 5.1 out of your TV before you got VRROOM. Turn Change Format off, ATV4K will then detect the VRROOM as Atmos compatible.

I can get Atmos from all sources and all apps but not from Netflix on Shield 2019 or ATV4K?

If you can get Atmos on Prime and Disney + from both devices no problem but never better than 5.1 from Netflix – simply go into your Netflix account setting on a Laptop and check your audio payback setting and make sure it is set to high and not any lower and restart your source.

My ATV4K remote is not working for ARC or eARC sound system volume control?

ATV4K source remote is different because it just waits if there is “audio system” device on the network that it can control. If there is then it shown in the remote menu “hdmi control(via receiver)” That will only work if the source sees an audio system in the CEC network. It is just ATV4K trying to discover if audio system is present or waiting for your ARC or eARC sound system to advertise it is there. Of course sometimes when there is no audio then ARC or eARC sound system is not active and then volume doesn’t do anything.

FAQ LLDV>HDR10

What is LLDV and why is it used?

Dolby Labs created LLDV for Sony Dolby Vision TVs. HDfury enables the sending of LLDV to HDR10 TVs and projectors

How to turn on LLDV>HDR?

1. In EDID Tab, select Custom EDID 10 or use Copy TX sink EDID and Modify and select Custom LLDV.
2. In HDR tab, select “Use custom HDR when input is LLDV”
You might need to restart your source.

If you have the VRROOM set so the ATV4K sends Dolby Vision LLDV instead of HDR10, the ATV skips the DV to HDR conversion and directly tone maps the Dolby Vision source to LLDV. The result can be amazingly better to have the VRROOM output the LLDV from the ATV4K as HDR10 than have the ATV4K sending HDR10 to your TV.

If I have a less than full bandwidth 18Gbps display or PJ can I still view LLDV?

Yes as long it supports HDR. Most DV content is actually 4K24 so if you set Match Frame Rate to ON your projector might be able to accept 4K24 422 12bit. For example the Epson 6040 is limited to 4K60 4:2:0 8-bit. It can support 4K24 4:2:2 12-bit HDR (or LLDV to HDR) as that signal is under the 10.2 Gbps limitation of the chipset used in the Epson 6040. Also there is no such thing as 422 10-bit in the HDMI specs. And 444 10-bit is a higher bandwidth than 422 12-bit.

I have a display that supports HDR and Dolby Vision should i set the Arcana for LLDV to HDR conversion?

No, it is not necessary to have the VRROOM convert LLDV to HDR10 if your display supports Dolby Vision, except if you have unusual delay or if its DV30 only and you want/need to overcome this limitation.

What series LG OLEDS support both full Dolby Vision and also LLDV?

The LG OLEDs from 7 series on support both full Dolby Vision and LLDV.

What is Maximum Luminance and MaxCLL value in Dolby Vision?

LLDV to HDR conversion for Maximum Luminance only affects LLDV output and not full Dolby Vision. The Maximum Luminance value tells the player what the maximum brightness your TV is capable of. The player takes that into account when tone mapping full Dolby Vision to LLDV. There is a Maximum Luminance value in the Dolby Vision data block that can be adjusted in the LLDV->HDR settings. Its default value is 1000 nits and is used to tell the player what max luminance to use when tone mapping the Dolby Vision content to LLDV. There is also a nits option value in the HDR settings of the VRROOM. This value may or may not be used by the HDR TV when tone mapping HDR input. The only way to determine how it is used is to adjust the value and check the results. Changing the HDR nits value should have an immediate effect, if any. Typically, lowering the nits value will result in a brighter picture at the risk of clipping highlights. It might seem counter intuitive but telling the TV that the content has a lower max luminance means that the TV does not need to use as much compression to reduce the dynamic range of the content to fit the range that the TV is capable of displaying. Too much compression is what results in an overly dark picture. If the HDR TV has Dynamic Tone Mapping, the HDR metadata might not be used at all when tone mapping. So changing the metadata nit values would make no difference in the result. You could turn off DTM and see if changing nit values makes a difference in the resulting picture.

So basically, The HDfury VRROOM tells the player what the max luminance is; the player then performs tone mapping of the full Dolby Vision signal to LLDV taking the max luminance value into account. It is not a simple brightness adjustment.

The Max Luminance value is not changed and is always output as 4000 nits. So if your HDR TV uses Max Luminance in tone mapping the results after changing the HDR nits values may be lessened. HDR Max Luminance is the maximum luminance of the HDR grading monitor used when creating the HDR. Titles graded with a 4000 nit monitor are referred to as Mastered at 4000 nits. MaxCLL represents the brightest pixel contained in any frame of the content. Most newer TV models use MaxCLL and have less reliance on Max Lum. Changing the LLDV nits value may need a restart of the title depending on the player. ATV4K is probably the worst player for testing different values since each time an adjustment is made it requires a new test for Dolby Vision. This is because the Max Luminance value is contained in the EDID presented to the player. The ATV4K recognized the EDID had changed and wants you to test Dolby Vision again.

Why when I select a new EDID do the ATV4K want to retest Dolby Vision?

The ATV4K keeps a memory of successful EDIDs. If you configure a new EDID it will ask to retest Dolby Vision and/or HDR. But the next time you configure that same tested EDID it won't ask to test again.

What value should the LLDV value for max Lum be set to for most users?

For most users, the default LLDV value for Max Lum of 1000 nits will be good. Most HDR TVs do a good job of tone mapping 1000 nits. And if you set the HDR setting to LLDV Sync, the HDR MaxCLL metadata value sent to the TV will always match the value set for LLDV.

Why do I have a red tint and colors that are too saturated?

If you set the DV primaries to DCI-P3 and send the LLDV to a display device that does not have a DCI-P3 color profile; the colors, when applying a BT2020 color profile instead, will appear more saturated including a red tint noticeable on faces. The solution is to send BT2020 and not DCI-P3.

If you have a display that supports DCI-P3 but the fire stick 4k only supports RGB and YCbCr how can you force it to output DCI-P3?

When you set the LLDV->HDR Primaries setting to DCI-P3, the Fire Stick is told that the TV wants DCI-P3 instead of BT2020. Even though the Fire Stick may not have a DCI-P3 color format output option, the Dolby Vision to LLDV tone mapping performed by the Dolby provided software should output DCI-P3 colors. The ATV4K does not have a DCI-P3 output option and it does send DCI-P3 colors when the DV EDID is configured to DCI-P3.

How do you set the Oppo UDP 203/205 to output LLDV instead of Dolby vision?

In Oppo HDR Setting, set Dolby Vision Processing to Player-led. You can leave HDR to Auto if you only want LLDV for Dolby Vision discs. If you want the Oppo to convert SDR and HDR10 to LLDV, set HDR to Dolby Vision.

How do you tell if the Oppo UDP 203/205 is setup correctly and outputting LLDV?

Do a long press on the Oppo remote Information button. Scroll down to Output Information. You should see: Format Dolby Vision and Color Space 12-bit. That is confirmation of LLDV output from the Oppo.

FAQ SONOS Arc

Audio cuts in and out, what could it be?

If the audio cuts in and out on an ARC or eARC sound system, try power cycling it (unplug the power cord, wait a few seconds, and then plug it back in). Verify the cable from VRROOM Arcana ARC/eARC audio out.

It seems there is distortion or surround channel cutting in and out, what could it be?

If anything weird is happening with your video or audio, your FIRST step should be to make sure the HDMI cables between your source and the VRROOM and between the VRROOM and your TV/PJ are known to be good at full speed (We recommend Zeskit, Kabeldirekt or Cable Matters from Amazon). Even if you sent FRL5 video with Atmos over the cables and the VRROOM showed the full 1200MHz speed, and even if they pass the built-in Apple TV 4K Dolby Vision tests, there may still be intermittent errors, like distortion or surround channels cutting in and out. Many users finally determined the problem to be caused by a 1-foot cable between VRROOM and their displays. Use only cables that are at least 6 feet/2 meters and max 12 feet/4 meters for copper. We recommend using SONOS supplied cable from VRROOM eARC output to SONOS Arc.

FAQ NVIDIA SHIELD

Why my Shield is not offering Atmos from all APPS?

There are several factors, the Shield model: Shield 2017 or Shield 2019/2020/Pro, the APP in use and the TV maximum capabilities. VRROOM offer dedicated Scaler mode that will advertise full 4K HDR/SDR or LLDV at input even if your display is only 10.2Gbps or 1080p capable. However please understand that sending HDR or LLDV signal to a SDR display will results in washed out colors. If your TV is only SDR capable, only use a SDR EDID mode such as 4K60 444 8b SDR. Make sure to always reboot the Shield after changing the scaler setting

For Sonos and most others:
Service/App - Title Played - Arc Audio reported in Sonos App (make sure to always restart the APP to have accurate audio format reported)

4K SDR Display or EDID set to 4K SDR

Disney+ - The Mandalorian - Dolby Digital Plus 5.1
Disney+ will not output Atmos in 4K SDR > 1080 SDR on Shield 2017 and PRO.
Netflix - The Old Guard - Dolby Digital Plus 5.1 (Netflix playback screen displays Ultra HD 4k and 5.1) on Shield 2017
Netflix will not output Atmos in 4K SDR > 1080p SDR on Shield 2017 but will do it on Shield 2019/2020/Pro.

4K HDR Display or EDID set to 4K HDR

Disney+ - The Mandalorian - Dolby Atmos (DD+)
Disney+ will output Atmos in 4K HDR > 1080p HDR on Shield 2017 and PRO.
Netflix - The Old Guard - Dolby Digital Plus 5.1 (Netflix playback screen displays HDR and 5.1)
Netflix will not output Atmos in 4K HDR > 1080p HDR on Shield 2017 but will do it on Shield 2019/2020/Pro

I can get Atmos from all sources and all apps but not from Netflix on Shield 2019 or ATV4K?

If you can get Atmos on Prime and Disney + from both devices no problem but never better than 5.1 from Netflix – simply go into your Netflix account setting on a Laptop and check your audio payback setting and make sure it is set to high and not any lower and restart your source.

Prime APP on Nvidia Shield 2019 is not giving me Atmos?

Try turning off Dolby Audio processing.

FAQ AUDIO

I hear an audio echo?

If anyone is having issues with echo on your audio, the problem may be that the audio channel being sent to your TV is actually getting played through the built-in TV speakers (which is hard to notice when your sound bar is right in front of or below your TV) and you're hearing two sets of speakers slightly out of sync. Checking the sound-output setting on your TV will confirm if that is the cause. You can fix it by setting your VRROOM to mute the output going to the TV/display from the config page (mute TX0 or mute TX1), so no audio gets sent to TV and you only hear audio from HDMI sound system or ARC/eARC sound bar.

I’m experiencing lip-sync issue after installing VRROOM?

The only possible situation with HDMI source at VRROOM input is that audio is AHEAD of pic. You can fix it by adding delay on your sound system. AUDIO cannot be LATE (assuming you did not force delay yourself). For folks with an Apple TV, the Wireless Audio Sync feature will automatically and very accurately take care of remaining (audio before video) sync. It didn't work before VRROOM because it can't delay video and got confused.

My TV displays unsupported audio format banner continuously, what can I do?

Some TV will go nuts/crazy if you send ATMOS signal to their input, probably the Atmos MAT metadata of it that they don't like, in such case you can mute TX0 or TX1, under VRROOM webserver > config so NO ATMOS is sent to the TV. Actually anyone with any issue should try that especially if issue when playing Atmos only! Verified/Affected models: Sony XF9005 - X900F and Samsung UN75NU6950FXZA

I cannot get any sound to a brand new/never used SONOS Arc from any source at VRROOM input when VRROOM is connected to a non CEC capable projector/monitor or display

In order to get audio from any sources at VRROOM input, users of brand new/never used SONOS Arc must go through the APP setup process while connected to a CEC capable display, if you never went through the SONOS APP setup process with your SONOS Arc soundbar yet, please connect it to any HDMI display that offer CEC support and complete the SONOS APP setup process, once done you can connect it back in your setup with a non CEC capable display, monitor or TV and you will be able to get Full Audio from any source to SONOS Arc as expected. This SONOS restriction requires such initial setup first with CEC capable display. If your SONOS Arc has been setup before, then there is no need to set it up again after VRROOM is connected and you can just proceed normally.

FAQ VIDEO

I notice a short black screen / resync when starting a content that i didn't have or noticed when connected direct to TV?

All that is normal, you will have the same if you insert any device in between, like an AVR, splitter, matrix, switcher, video processor, and the more device you have in the same chain, the longer this will take, the only way to have that nearly not noticeable is SOURCE > DISPLAY direct since signal goes straight to panel driver. If menu is 60Hz and content 24Hz then there will be a resync like for any video format change, if you have SOURCE > TV, then sure you never noticed it but insert any device in between and you will have the exact same, just normal, HDMI resync.

My TV brightness seems to fluctuate, what can I do?

Some TV will go nuts/crazy if you send ATMOS signal to their input, probably the Atmos MAT metadata of it that they don't like, in such case you can mute TX0 or TX1, under VRROOM webserver > config so NO ATMOS is sent to the TV. Actually anyone with any issue should try that especially if issue when playing Atmos only! Verified/Affected models: Sony XF9005 - X900F and Samsung UN75NU6950FXZA

I have loss of sync, drop or black screen playing high bandwidth signals?

This is a cable issue, replace cables by HDfury, Zeskit, Cable Matters or KabelDirekt from Amazon in min6ft/max12ft and you will be fine. If you need fiber cable for high bandwidth in 30ft(10m) or 60ft(20m), please visit this page.

FAQ ARC/eARC <> HDMI input switching

How to use VRROOM when retrieving ARC or eARC sound from display?

Always use the display remote (or the display remote IR codes with a universal remote) to switch between TV HDMI input and TV APPS. It is mandatory and extremely important to use your TV remote or TV remote IR codes to switch between TV APPS (ARC sound) and the TV HDMI input where VRROOM is connected. Whenever you click TV remote APP selection or input channel selection there will be a multitude of CEC commands flying. VRROOM capturing these are essential to switching the audio. Please verify this is the case carefully so it is consistent and ok. We expect this to be one of the main issues due to the flakiness of CEC implementations overall in consumer video. Also verify TV other inputs to make sure audio flows through TV ARC into VRROOM and then to ARC/eARC. You can also use a source remote and press a button for VRROOM to switch to it. Please note that if you don’t use CEC and ARC sound retrieval, then the above is irrelevant.

How I can switch between TV ARC/eARC and HDMI INPUT?

For HDMI/ARC/eARC switching to work, when you use your TV remote and select APPS on TV, then VRROOM should switch to ARC or eARC(From TV) on the main OLED or webserver page, when you use your TV remote and select HDMI input where VRROOM is connected or simply use a source remote to turn it ON or MENU button, then VRROOM OLED should report audio from HDMI INPUT. As long as this does not work correctly it means that ARC/eARC/CEC is not working as it should and you should try new update when they comes out and report back via our discord support server: here. When TV sees a source it asks the source what it is. The source responds it is “audio system”. Then TV starts ARC or eARC and turns off its own TV speakers and allows TV remote volume control to pass as CEC commands. Now all audio either from tv apps or routed to TV via TV HDMI inputs will flow back via ARC or eARC. To enable HDMI audio from VRROOM input then VRROOM must be instructed to switch to its own input audio rather than use the ARC or eARC from TV. This happens with two ways: TV remote is used to select the input where VRROOM is connected OR the VRROOM input source issues routing change - message which happens when you press Menu button on ATV4K for example. When VRROOM is rebooted this entire sequence is interrupted and all start from scratch and again the timing when the sound system tells “audio system” vs when ATV4K source send its routine message is random. VRROOM play no role in that, VRROOM only listens to these commands and they come randomly after power up. Sometimes TV is first and sometimes ATV4K is first so the startup selection by VRROOM will be random. It is only in sequence if you never reboot VRROOM.

FAQ TV Remote for Volume Control on eARC/ARC sound system

How to use TV remote for controlling eARC/ARC sound system volume?

Please note that this DOES NOT apply to SOURCE REMOTE for volume control. In basic principle the only way that TV remote can start working is that TV enters "system audio" mode (it’s a different mode from "audio system"). The only possible way for a TV to enter a "system audio" mode is by receiving a certain command via CEC. In "system audio" mode TV mutes its own speakers and starts controlling external products via CEC commands. The only equipment issuing this command is an ARC or eARC sound system. No other device can control TV to enter this mode. Anyone having issue where TV remote does not work then it means the ARC or eARC sound system has not yet issued the command or TV have not yet reacted to it. As long as TV does not mute its TV speaker, then TV remote control for volume will not work.

Solution could be:

1. Turn TV CEC OFF>ON or CEC SCAN
   Some TVs might have delay after CEC ON to detect equipment.
2. ARC/eARC sound system HDMI cable unplug/replug
   Some TVs might have delay after ARC/eARC sound system replug to detect it and switch to "system audio" mode.
3. ARC/eARC sound system power cord remove/reconnect
   Some TVs might have delay after ARC/eARC sound system replug to detect it and switch to "system audio" mode.
4. TV Power cord unplug, wait 3min, replug
   Some TVs might have delay after power cord unplug/replug to switch to "system audio" mode.
5. Some order or power up sequence might need to be found in particular setup.
6. Unplug/replug VRROOM HDMI Out.
   It can help if luckily that is corresponding to option number 5 above in your setup.