HDZero Goggle + Walksnail VRX = Avatar Goggles? Definitely worth testing. 

In case you're wondering my voice at the end was the first symptom of an awful cold.

after 7:46 i had to look if there is still Chris R talking in the video. hahaha. i really heard a other person. :-)

The voiceover change at 7:46 is absolutely amazing. You should use the audio settings for the rest of your commentary. 👍

Thanks for taking the time to run these tests and sharing it with everyone! Much appreciated!

Could I suggest a test? Would be really interesting to compare latency of native Walksnail goggles vs. Walksnail goggles HDMI out piped into HDZero goggles. The difference would presumably be the HDMI encoding component.

An AI took over the voiceover ar 7:44 😂 Love AOS Labs! Will be my most clicked bookmark 😎

Thanks for the test Chris! You were the one I thought of when I heard Bardwell claim they were exactly the same. Thanks for putting it to the test.

Nice video! Was looking forward to someone doing these comparisons, and thanks for checking with Carl to explain the difference in 60fps, as it not being optimized yet. I don’t expect I’d use that over the 100 option so I’m glad they put effort to 100fps firsts. Also sounds like you got a cold at the end of the video.

Thanks Chris, you're doing a stellar job with all this testing. Keep doing what you do!

Very informative video Chris thank you for all you do in our community! 👍

Yay for aos labs! Thanks for all you do

I was just listening to this while working on something, and the difference in your voice around the 7:30-8 minute mark threw my brain for a loop! Nothing negative to say whatsoever, it was all done really well. I don't know if I would have noticed, if I were watching and listening. Very interesting.

Fantastic testing, Chris! Thanks a bunch! 😃 Stay safe there with your family! 🖖😊

I think Joshua has an expensive spare battery testing setup. Which he sometimes is unhappy about, because he didn‘t use it enough. :) Also thanks for testing and contacting Carl about this. 🙏

This is amazing Chris! Thank you so much for all you do sir! Cheers!

Great video as always. Please get well soon Chris 😊❤

I love my HDZero goggles (without Walksnail VRX). I also love you holding claims and assumptions up to empirical testing. I'm looking forward to your website.

Awesome stuff! Looking forward to battery tests as well.

Hmm Chris #1 seems trustworthy and relaxed but Chris #2 seems professional and spry...

Hi Chris, great video. I'm also already a fan of AOS labs. What I find curious is that the difference between the first pixel latency of the Sky o4x at 720p60 and the HD-Zero Goggles at 720p100 is lower than the difference between 720p60 and 720p100 on the Avatar Goggles themselves. Maybe a HDMI input latency measurement for both of them would be interesting after all. There's actually a nice Raspberry Pi project called "pi lag tester" that turns on an LED on a Raspberry Pi Zero as it changes the image on the HDMI out. I have used it to measure the (very high) input latency of my Skyzone Cobra X V2s. If you ask me, the HDMI input lag would also be interesting data for AOS labs (at least I'm curious). I'm happy to share the link (I guess I'm not allowed to do it directly here) if you're interested, but it's also easy to google. The original article is on blogspot.

Awesome comparison. That explains why so many reviewers felt a massive improvement in latency when switching to high framerate mode on the VRX with HDZero goggles. I'm really pleased with this result because it shows my Sky04x is sufficient for the AvatarVRX and there isn't much to be gained from upgrading to HDZero goggles. ❤️

Hi Chris, I'd love for AOS Labs to follow up on this once HDZero claim they've optimised their firmware for 60fps. I'd also be interested to hear Caddx's comments about the HDMI output on the Avatar VTX.

Cool video and useful information, thx!

Hi Chris, Thanks for all your great content and work on frames. I've got 2 questions: Will you design the 6-inch version of AOS frames ? Also, will the AOS 7" get the V2 design eventually ? Thanks ! I ask for it because I really love the iflight's bob57 concept, and I'd love to get an AOS equivalent for buildingmy own. A cool freestyle capable drone but with real long-range abilities ! (Sorry for my English 🤪)

I really think, Art Of Science AOS labs will be verry benificial to alll or most of the fpv/uav community,I will be using it for sure,T hanx for all the time consuming work you do. also thank you for sharing.!

Wish Walksnail would make a box goggle version. Great information thank you.

What's going on with the voice changing at 7:44? Different microphone? it sounds like a different person? AI generated?

YAY! Awesomesauce! :D

Almost 80ms for AvatarVRX+HDZero, mother of god that’s crazy! And that’s best case scenario before signal issues create more latency? This is probably why I killed my WalkSnail test quad on the second flight… lol! Thanks for your quality videos Chris! p.s. People are loving that end of video sound engineering … haha!

Great thing about HDzero, its always going to get better!

These are the types of Rosser videos I love most; Testing things we wish we could do. This one was especially nice and concise. Also, appreciate the new test results webpage. A true contributor and great mind for FPV’s future. Have to comment about whatever that voice thing that’s going on at the end of the video. Kinda funny and weird, but it was actually a pleasant-to-the-ear voice. Only constructive criticism would be that often times you’re reading a script and robotic which can be disengaging during your presentation. When you’re talking about AOS Labs, something you’re clearly excited about, the pace in your voice picks up and it makes the viewer excited as well. If somehow you can maintain that pace or close to it in words per minute, you sound much more relatable and engaging. Please don’t be all fake and extra about it, but I think some subtle changes can really make your videos reach to a larger audience. Sorry, not sure how actively you’re working on it or care, but from a superficial perspective, your videos have improved a lot and I want it to keep improving. Keep up the great work Mr Chris Rosser!

Hey Chris, big fan for more then 2 years now, nice work, continue doing so. but one question. the hdzero goggle has a max of 90fps!? still struggling where to go to from my sky04X and with my qlaksnail vrx modul. Walksnail goggle oder hdzero. i am 42 and still think that latenzy is everything despite my slower reflexes ;) what do you think? Walksnail goggle oder HD Zero!? thank you and take care.

Thanks great vlog

nice!! great job!!

It would be interesting if you did a teardown of the walksnail goggles and the walksnail vrx and see how they differ in terms of their receivers. It's possible the goggles have better parts.

Finally I was waiting for it... 🙂

Thank you for testing this. Do you think Walksnail could optimize the hdmi output-lag on the VRX in a future firmware update?

The latency of Walksnail is actually surprisingly high in some modes, and that's just the bench, not counting for the variability in real life. Guess you really have to pic the right mode to enjoy this system especially with the HDZ Goggles. Great test and good to know! And those graphs on your labs site look amazing. This is much better than those spreadsheets!

Would(n't?) it be possible for the Walksnail people to cut down the 60fps latency by running the pipeline at 120fps and outputting only every 2nd frame? The jitter will be high maybe.. but.. seems like an interesting experiment for them to try.

Why doesn't anyone show the many goggles/systems through the goggle lens in REAL time in flight to see how much latency is noticeable while flying in each goggle/system being used ? these tests show a lot and the differences BUT how does that affect what one SEE's in the goggle in flight. Is it really that noticeable to cause the operator a issue or do most never notice it at all ?

Would you be able to confirm the Walksnail VRX HDMI output latency with a second device such as a gaming monitor? I wonder, if it is the case that the VRX has high output latency, if there is the ability to get more performance out of the pipeline.....and also if Walksnail has motivation to look into it?

That last bit was scary

Exept the latency and other specs. How do the compare? Color? Any blurry edges? "Real" ipd (got to put my hdo's to absolut minimum to make it work) etc. And the real subjective part what google will fit most peoples faces best...

👍🏻👍🏻

Aoslabs is a great idea. 👍

You qualified the hd zero goggles as the only OLED goggles that can run 100fps, does that mean there are non OLED goggles that also can? Which ones?

I wonder if a firmware update on the Skyzones will allow for the higher refresh rate . Obviously if he OLED panels support a higher refresh rate. Anyone know what panels are been used?

@7:44 the voice changes

Maybe you can link your frame related youtube videos on your aos page

I just listed a VRX on ebay that I decided I can't afford right now. (My vehicles engine blew out, so I need to pinch pennies.) It is brand new and slightly cheaper than the other options. Hopefully someone enjoys it.

7:43, new mic or voice changed?!

How can hdzero/vrx at 720p 25mbps have more latency than at 50mbps?

Hey guys in the comments. Would this be any good for HDO V1's ? worth it ?

Link to the test method. Heart emoji

At 7;45 his voice completely changed

Isnt the latency problem through HDMI practically unsolvable? According to this ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-jAGp0JfNof8.html, there is 1frame delay between HDMI input and HDMI output at 60fps - so basically 17ms latency. (Should be better at 100fps, theoretically 10ms, but there is more bitrate so who knows). So when standard latency of Walksnail system is 30 - 40ish ms, then at 60fps HDMI adds 50% of latency :(

Next time try the Dart Vader voice..

Who's doubling your voice at the end of the video?? Lol

Did you just dub your self in the last part of the video?

I eat something and then I make myself comfortable... 🤙

I would be interested to see your testing method on quad components while using a wind tunnel. The hobby has not focused on aerodynamics and prop loading at speed, but may in the future. Maybe you could forge a partnership with a lab or amateur who has a wind tunnel? ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-NWYrec9kz9o.html

That voice change....lol

Walksnail is DOA anyway imo. Good notes though! Nice display of the versatility of the HDzero googs

I love how you say "Can Buy Today". Not true statement. Ordered HD Goggles Jan 4th, no Pre-Order indication that day on website, but was added 10 days later. Latest added note on website, "Expected to start shipping in mid-March". Note word expected! This was added over the past few days. We were told by selected RU-vidrs it would be Jan 23. What a lie! Shipping 3 to 8 weeks. So the money left my bank account, not just a hold as required by US law, 4 hours later. So Carl has my money. Ordered the 90 fps camera. No pre-order listed. Website says your order will ship in 2 to 5 business days. No camera has shipped yet! So you can keep pimping these goggles all you want but there is still no product to be shipped to buyers.

Nobody talks about how heavy these goggles are with all the modules (analog + walksnail vrx). 580 grams without 2 antennas. In real life, impossible to fly with unless you are sat on a chair and you are facing up. Otherwise they slide on your face, dig into your nose and overall very uncomfy during flying. If you adjust the head strap to be tighter you get headaches after 2 packs. Battery was on a lead. For reference: walksnail goggles with all antennas- 341gr hdo goggles with analog module and two antennas- 270gr skyzone 04x goggles with 2 antennas- 334gr hdzero goggles with two antennas and analog expansion - 450gr walknsnail vrx module (4 antennas)- 95gr sharkbyte vrx module (2 antennas)- 75gr Apart from that, build quality is good but not to the level of the skyzone's o4x / walksnail / dji. Optics, menu, adjustments are brilliant.

7:44 wtf

Thanks so much for that