DTS, DTS-HD, DTS-X Lipsync (solved)

Ok, so I have downloaded the latest 1.22.2 firmware. Here's my experience:

- Good news is that with the new firmware, Dolby and DTS tracks (haven't tested PCM or AAC yet) show now the same audio/video time difference of about 40ms ahead of the video signal (the same difference I get with my Nvidia/Windows HTPC).
To solve that, I set the "Menu/Global Audio Offset" to "50ms delayed" -> on a sidenote, it would be great if the "Global Audio Offset" could be set in 1ms or at least 10ms increments and not only in 25ms increments.

- The new specific Dolby and DTS audio offset options do not work as expected. When setting the "Menu/Global Audio Offset" slider to 0 and setting a delay of 40ms or greater in the specific Dolby or DTS audio offsets, there is absolutely no change in the audio/video time difference. It's as if the delay setting is ignored by both Dolby or DTS tracks. Only when setting these offsets to x ms ahead do these offsets work as expected.
As I was able to solve my issue with the Global Audio Offset, I haven't done anymore in-depth testing with the new specific offset options.

- The above described behaviour is the same whether the Denon AVC-X6700H lipsync is set to on or off.

- The above described behaviour is the same whether the Zidoo Passthrough Compatible Mode is set to on or off.

 

Hello,
I also have the problem with out-of-sync sound with the different sound formats.
I haven't had the media player for very long and am looking for correlations between the different sound formats.

Does Dolby Atmos seem to have a different time shift than DTS... I have found that out in the meantime. Is it possible to limit the time shift to which sound formats and enter it permanently? Is it then always the same time shift for different films as long as the sound format is the same?

Can you give me a link to test files (for example with the bouncing ball) to determine the correct synchronicity in the different sound formats?

Many thanks

Philipp
Zidoo X9S 8K --> IOTAVX AVX17 --> Epson LS 1200B

 

You should switch on Passthrough Compatible Mode in Audio settings as this mitigates issues with non-compliant TrueHD soundtracks.

There are separate audio offsets for DTS and Dolby codecs in Settings and a global offset available in the player context menu. Generally they are not needed.

Your projector will most likely introduce a video delay but it should be included in its EDID so as long as the IOTAVX is setup to accept it, it will compensate. If you use a custom EDID with a projector you have to make sure the EDID has a matching entry for Latency.

If you post the EDID for the projector on its own (player connected directly to the PJ) I can confirm what the delay introduced by the PJ is.

To Download EDID
================

Settings/Display/Custom EDID/Save EDID

Save to a USB stick or network location

Post file as attachment to forum

 

I have to do some further testing, however I'm sad to say that the lipsync issue persists with DTS-HD MA (whilst all other DTS formats are fine - even without the use of the DTS offset).

Prior to 1.22.2 all DTS formats exhibited the lipsync issue consistently so the global DTS offset was desirable. Ironically however, the lipsync issue was fixed broadly and thus the offset isn't required any more, and indeed in this case offers no value either as it's only HD MA that is affected.

I'd appreciate it if anyone who had the issue before could try to replicate.

 

The issue very much persists for me.....

So the way I worked around the issue was to attach the Z9x 8K directly to my Sony A95L and output the sound via eARC to my Denon 3800h.

This is all well and good, no sync issue, but for some reason audio output via eARC isn't always recognized as the native audio type, for example Dolby True HD would show Dolby Sur TV (or something like that). Atmos would be OK, but other audio types I think mostly Dolby would not not show correctly on my amp, leaving me to believe they must be affected in someway by eARC through the Sony.

I put up with this for a while for the sake of having no sync issues, but after this recent firmware update I thought I'd give it another go direct through the amp, as it should be set.

Same old sync issues, queue me spending hours going back and forth with the two audio offsets.

The closest I can get them are:

Dolby 110ms delay
DTS 90ms delay

I still think the DTS codecs produce slightly different delays but I haven't tested exhaustively.

One reason why I'm so keen to get this working through my amp is I want to attach a HDD to the player for media and there's no easy way to monut it behind my TV, so in the AV cabinet is much preferred.

Can anyone recommend a similar media player that 'just works' ? I've been mucking around with this player since September last year and had enough really.

 

​

 

I can't even be annoyed, that's actually quite funny.......

 

Still have some issues on my zidoo z9x 8k - denon x1700h - sony a80l

Auto frame rate match and resolution - out of sync with almost everything apart from dolby formats

Enabling motionflow on my sony corrects it a little for whatever reason, the only thing that helps is putting 50ms delay in the av

Zidoo z9x 8k - sony a80l - denon x1700h with earc works, theres no audio delay but cant play all formats and quality is lower

 

I have a delay on all DTS formats (note a Denon AVR). I set a DTS global delay in settings.

 

Crazy, I didn't have any audio problem until I switched to the Z9X 8K (from a Z9X), now it's out of sync. Crazy we have a slider which (apparently) has a minimum of 10ms steps and can't be displayed during playback. I just can't believe my Z9X 8K is worse than my Z9X and I have to manually hotfix that after launching a movie. So far, to have an acceptable sync, I had to set a -50ms on the global settings and an additional -25ms (which is now the minimum step) on the advanced settings during playback. Since I am not supposed to meddle with that stuff, I'm quite upset, how am I supposed to trust the result of that supposedly high fidelity box when it's not even syncing video and sound properly on files which were perfectly synced with no particular settings whatsoever on my previous box (I'm not even sure those settings existed actually).
My setup is quite simpe, hdmi from zidoo to TV, and audio passthrough from TV to DAC (spdif). I had to turn on the audio compatiblity thingy because video was stuttering (lovely first contact with the new box). Now this.

What a lame experience.

[edit] today, no delay, had to remove the settings. I don't know if I should feel relieved or brace for a rollercoaster. 'cause yesterday, the movie suddenly stopped playing, SMB wasn't reached anymore and I had to reboot the box. I'm loving it already.
[edit nº2] today, delay is back, seems random, lovely. Around 50ms I'd say. Feels like using VLC -_-

 

Perhaps you could return it.

 

HDMI connection chain:
Z9X 8K → Denon X4800H → TCL QM8K

Affected formats: DTS-HD MA and DTS:X.

This audio delay issue only occurs with DTS-based tracks. The offset is subtle, yet clearly noticeable during character dialogue. I managed to fix it by setting an audio advance of 25 ms in the player settings.

Could anyone explain why this delay happens exclusively on DTS formats?

 

I’m also experiencing recurring audio-sync issues with both of my Z9X 8Ks.

This happens on both of my Sony TVs, each paired with a Sony soundbar. For both, the Zidoo is connected directly to the soundbar, and the soundbar is connected to the TV via eARC.

The issue isn't a consistent, fixed delay. Playback begins well synchronized, but the audio seems to get worse as the movie continues, although at times the synchronization appears to improve temporarily before drifting again.

Because the amount of delay changes during playback, adjusting the manual audio-delay setting isn't a fix.

I primarily use the Z9X 8K for local UHD remux playback.

 

do you have av sync on auto on the tv? have you tried without earc?
Had the same issue with my sony tv, but I was using zidoo to watch stremio/nuvio and had delay, switched to local media and its fixed.

 

Turning off av sync seems to have fixed the problem. Over the next few days I'll try watching a problem movie to fully verify, but it seems to be working correctly after a quick test. Thank you.

Update
Problem solved. Disabling av sync resolved the audio delay.

 

Hi,

I've debated creating a new thread or un-earthing this one. I hope I made the right choice.

I've been trying to fix a lip sync issue for a while and i'm running out of ideas. Hence i post it here, hoping you guys may have more experience with the zidoo boxes than I do.

My HDMI Chain is: Zidoo Z30 Pro -> Denon X3800H -> LG OLED 83 G5 / Speakers.

I've noticed a 200-250ms delay between audio and video (video is always late) accross the board. It doesn't really matter if the file's audio is PCM stereo, Dolby or DTS.
I've upgraded from stable v1.3.05 to beta v1.3.45 and the offset has been reduced to 100-150ms. Better but still noticeable. It gets worse if I fastforward part of the movie.

I've created test files with different audio and video format, available here: https://wetransfer.com/previews/23b02b4bab1cc51f2b99949884267d4c20260925104053/58495d

I've noticed a lip sync issue only when playing these files from the Zidoo internal HDD (file manager), and I've tested them on 3 different input sources :
- From the internal Zidoo Z30 Pro 3.5" HDD, through the AVR and the TV
- From a laptop plugged to one of the AVR HDMI input (replacing Zidoo's input)
- From a thumbdrive inserted directly in the LG TV USB port

In case my settings are wrong, i'm posting all relevant details. I've tried to stick as much as possible to the official recommendations.

Don't hesitate to ask if I've forgot an important one in the list.

- Playback:
- Auto frame rate:
- Local playback: Match frame rate only
- Third-party app online playback: Off
- Display:
- Resolution: Auto switch to best resolution
- Color Settings:
- 8K: Priority YUV420 10bit
- 4K 50–60Hz: Priority YUV420 10bit
- 4K 23–30Hz: Priority YUV422 12bit
- Below 4K: Priority YUV422 12bit
- HDMI range: Auto
- HDMI signal format: Enhanced
- HDR:
- UI Display Mode: HDR
- Dolby Vision output: TV Led
- HDR output: Auto
- Custom EDID: off
- Screen scale: 100%
- Screen Ratio: Normal (16:9)
- Display mode: Screen Cover
- AI image process: AI PQ off, AI SR off
- Sharpen Picture: Peaking No, Dejaggy No, Dithering No
- HDCP: off
- Audio:
- Source output: HDMI
- HDMI setting
- Decode: RAW
- Downmix for AC3: off
- Downmix for DTS: off
- Volume protection off
- Volume passthrough mode: on.
- Pass-through compatible mode: on
- Audio Offset:
- Dolby : 0
- DTS: 0
- Other:
- HDMI CEC: on (TV wakes media player on, media player turns off TV on, the rest off)

On the AVR (Denon X3800H), i have the auto lip sync on (but it doesn't change anything as previously mentioned).

On the LG TV, i've removed all AI image processing features and set picture mode to Filmmaker mode. I do have e-ARC activated to push TV audio onto AVR form some content (unrelated to Zidoo).

I didn't try manual EDID as I don't really know much about it.

Any ideas welcomed.

 

The first thing to say is that with any source device, Zidoo or otherwise, if there's a consistent lipsync issue across the board on all codecs then it's incredibly unlikely to be the source causing it since all codecs use different mechanisms and rules. Particularly if PCM output codecs (AAC, FLAC, MP3 etc) present it.

On any device you will usually be able to measure a certain amount of error but it will always vary by codec. Industry standards are 15ms for lagging video and 45ms for lagging audio. It's widely accepted that such errors cannot be detected and in fact the margins are wider in real life.

But 200 - 250ms is huge and of course incredibly noticable.

There's nothing I can think of in the way the Zidoo works that could produce such video delays across all codecs and indeed nothing I can think of that I could do to replicate it.

Generally video delay is caused by video processing in HDMI sinks and in most circumstances caused by projectors which always have a built in latency. For example my JVC (and all JVCs that I know of) has a latency of 198ms for progressive video and 264ms for interlaced. These values are reported in the EDID and they're used by the AVR to apply a delay to audio automatically (that's how auto lipsync works in AVRs).

Latency is a massively misunderstood problem, particularly in projector setups, and auto lipsync in AVRs even more so. People tend to believe it works in some magical way - not so - it just reads values from the EDID and applies those. If those values are missing, for example in a custom EDID, then auto lipsync doesn't work.

That said, you don't have a video processor in there, and I don't think I've ever seen a TV that reports latency in the EDID - if you want to post your EDID here I'll happily check, but every LG EDID I've ever seen doesn't report it.

I assume you've checked the lipsync settings in the Denon?

By the way, I have my own lipsync patterns, but I downloaded and tested yours on my test setup (Zidoo Z30 Pro > HDFury Vertex2 > Denon 7200 > Samsung TV) and no issues.

 

I won't re-hash my previous posts, but I spent over a year trying to deal with the exact same lip-sync issues.

Different Audio Codecs produced different delays.

I also have a Denon X3800H.

The Zidoo Z9X 8K is the only device that does this on my setup.

In the end I had to connect the Zidoo direct to my TV [ Sony A95L ] with audio via eARC to the Denon, and no lip-sync issues.

Connecting the Zidoo via the Denon always produced out of sync media, no matter what I tried, and I did exhaustive testing believe me.

Franzz, perhaps you could test direct connection to your LG and see if you get the same?

 

I had exactly the same issue, and similar equipment as yours i.e. Z3000 pro, X3800h and LG oled 77G4 and the lip sync drove me absolute nuts, nothing worked for me that's why I was surprised when this thread was marked as solved when it actually is not.

In the end I returned the Z3000 pro back to futeko, in the meantime I had sold my z1000 pro (which worked perfectly in the same set up - was a direct swap) so I was snookered) and had to buy a Z2000 pro which luckily works fine...

Problem is down to some glitch with those combination of hardware and the new AmLogic chipset - since in the exact same set up I never had lip sync issues when any of the previous Zidoos, and I've owned maybe 1 or 2 of Zidoo media players from previous generations.


I will give the Z3000 pro another try in a couple of months to see if the latest firmwares have improved anything, I'm just in the middle of completing my new man cave which will mean new equipment needed as I will leave all my old equipment in the living room set-up, so will update this thread if I have some good luck! If not I'll just buy another Z2000 pro for Ali express or wherever I can find one from!

 

Thanks for sharing your test files. I wanted to have a bunch of test files to set the Dolby and DTS audio offsets and these would be quite helpful for that.