Yi Ultra Dash Camera

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
Yeah if you have EU in your serial number use the app I posted above and it enables that menu option and it checks if your phone can play h.265 and enables it. (Uninstall current app first). You can always turn it off again. Could be an issue with my memory card but as it's writing less data I doubt it.

Anyone have the king version and confirm the preview video is also encoded in h.265?

Disabling the preview video would mean modifing the device firmware. That's risky and beyondy my ability unfortunately.
Agreed.... I will give it a go as soon as I get my arse out of bed.. Lol.. Thanks again for your troubles...
 

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
Agreed.... I will give it a go as soon as I get my arse out of bed.. Lol.. Thanks again for your troubles...
Ok a quick test and it's working great... I am using a Samsung Evo plus U3 card. Don't like sandisk. Troublesome...

Well done mate...

Just one thing... Lol

As you can see from the screen shots of the video it is only recording at 3.8mb/s..... Giving a file size of just 27mb for one minute...





Maybe because I'm not moving... I'll download a video clip from my drive to work later.... See what that shows and how it looks..

Thanks again...

Update:

I looked at 3 clips from journey to work.

Clip 1: was 1520p_h.265 and was 87mb in size with a bit rate of 12.7mb/s

Clip 2: was 1520p_h.265 and was 93 mb in size with a bit rate of 13.1mb/s

Clip 3: was 1080p/60fps_h.265 and was only 43mb in size with a bit rate of 6mb/s.....

So from I'd say all is working OK. I'll stick to 1520p for now.....

Thanks again for your work with tweaking the YI app.....
 
Last edited:

wacko911

New Member
Joined
Dec 22, 2017
Messages
12
Reaction score
8
Country
United Kingdom
Ok a quick test and it's working great... I am using a Samsung Evo plus U3 card. Don't like sandisk. Troublesome...

Well done mate...

Just one thing... Lol

As you can see from the screen shots of the video it is only recording at 3.8mb/s..... Giving a file size of just 27mb for one minute...





Maybe because I'm not moving... I'll download a video clip from my drive to work later.... See what that shows and how it looks..

Thanks again...

Update:

I looked at 3 clips from journey to work.

Clip 1: was 1520p_h.265 and was 87mb in size with a bit rate of 12.7mb/s

Clip 2: was 1520p_h.265 and was 93 mb in size with a bit rate of 13.1mb/s

Clip 3: was 1080p/60fps_h.265 and was only 43mb in size with a bit rate of 6mb/s.....

So from I'd say all is working OK. I'll stick to 1520p for now.....

Thanks again for your work with tweaking the YI app.....
OMG it works with the Samsung sd card? I'd given up!

Thanks for trying this. Just need to order a new memory card now.
 

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
OMG it works with the Samsung sd card? I'd given up!

Thanks for trying this. Just need to order a new memory card now.
Here's a quick 20s sample... I know it's been YouTubed, lol, but it did start out as a full resolution h.265.


When I say YouTubed, I mean I have downloaded back to my, phone and it is only a 1440p_h. 264 file.. So you tube converts it.

UPDATE: Here's the original 1 minute clip.

https://www.dropbox.com/s/u9bx05y8hcznwh2/2017_12_23_132734_1.mp4?dl=0

What brand and speed of card were you using?

Definitely recommend the samsung Evo Plus U3 cards....
 
Last edited:

wacko911

New Member
Joined
Dec 22, 2017
Messages
12
Reaction score
8
Country
United Kingdom
Quality on the Dropbox file looks really poor. Does the quality look the same as h264 did?

I've just the 16gb card that it came with. Only got the cameras a couple of days ago.

Will order up a couple of u3's
 

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
Maybe due to the cameras hardware capabilities, using the older h.264 codec but with twice the bit rate is more beneficial for better quality... And compatible for that matter...
 
Last edited:

wacko911

New Member
Joined
Dec 22, 2017
Messages
12
Reaction score
8
Country
United Kingdom
Here's a clip using h.264. 150mb in size and a 21mb/s bit rate...

https://www.dropbox.com/s/83ykoyt6ymko14d/2017_12_22_130118_1.mp4?dl=0

Maybe it's my camera or its my eyes but I don't think there much in it.....
My bad, clicked on the wrong button download and it was only 10mb. Got it sorted now, the h.265 looks better between the two but I was a brighter image. I'd be happy with that.

H.265 is supposed to give the same quailty for half the filesize so looks like it's working great.

Is your preview videos still h264?
 

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
My bad, clicked on the wrong button download and it was only 10mb. Got it sorted now, the h.265 looks better between the two but I was a brighter image. I'd be happy with that.

H.265 is supposed to give the same quailty for half the filesize so looks like it's working great.

Is your preview videos still h264?
From what I've seen on this camera, and using home editing software, yes it is pretty much like you said. Half the file size using half the bit rate for the same quality. Only draw back is that smartphones, tablets or pc's are only able to view h.265 files..... Maybe some of the newer tv's now, but my Samsung won't.....

I haven't actually plugged the card into the smartphone yet, so I don't know what the preview videos are. You'll have to give me 15 mins and I'll let you know....

UPDATE:



Yep, previews are still h.264 codec.....

And to agree, I'm happy with the quality of the h.265 also.... Gonna save a load of space on the memory card too...
 
Last edited:

kamkar1

Well-Known Member
Joined
Oct 11, 2013
Messages
19,763
Reaction score
10,527
Country
Denmark
Dash Cam
Lukas LK-7500G / Innovv C3 / mobius / G1W / SG9665GC & more
you will want to download from dropbox and view it on your own computer, steaming it from there give the same problem as with youtube.
 

c4rc4m

Well-Known Member
Joined
May 28, 2016
Messages
777
Reaction score
250
Country
United Kingdom
Dash Cam
Viofo WR1, A119 Pro. VicoVation Opia 2, Mobius 1
Interesting to see the quality people are experiencing on here seems far lower than the videos from Techmoan.

I've followed Techmoan for years and never known him to give a less than impartial review, so it's interesting his video seems far superior. Wonder if it's worth someone striking up a conversation to try to ascertain the differences? I do know he said that 1080P mode was poor and the best mode by far was 2.7K 30.

 

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
Interesting to see the quality people are experiencing on here seems far lower than the videos from Techmoan.

I've followed Techmoan for years and never known him to give a less than impartial review, so it's interesting his video seems far superior. Wonder if it's worth someone striking up a conversation to try to ascertain the differences? I do know he said that 1080P mode was poor and the best mode by far was 2.7K 30.

I know. I bought my cam on the strength of his review. The only difference I see is that his daytime videos were quite sunny.... Mine were both overcast..
 
Last edited:

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
One thing I be noticed is that when h.265 codec is being used the camera records using VBR. I have 2 night time clips that are 27 and 5.9mb in size..... Both using different bit rates..

Two night time clip properties below.



Just proving that in different lighting conditions the Camera chooses different bit rates..

This doesn't happen when using h.264 codec.... It's always using 21-22mb/s producing 160-180mb file sizes....
 

wacko911

New Member
Joined
Dec 22, 2017
Messages
12
Reaction score
8
Country
United Kingdom
One thing I be noticed is that when h.265 codec is being used the camera records using VBR. I have 2 night time clips that are 27 and 5.9mb in size..... Both using different bit rates..

Two night time clip properties below.



Just proving that in different lighting conditions the Camera chooses different bit rates..

This doesn't happen when using h.264 codec.... It's always using 21-22mb/s producing 160-180mb file sizes....
I aslo bought these cameras on techmoans review. Even used his affiliated link.

I notice the frame rate is different in the above videos. One is 30fps and the other is 25. Didn't even know that was an option. Also was the 800kb/s one stationary? The filesize is tiny. Glad to see such a reduction in filesize. Will save writes to the SD card and hold so much more video.

I take it you played back the small one and it isn't corrupt or frozen video like I was getting?
 

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
I aslo bought these cameras on techmoans review. Even used his affiliated link.

I notice the frame rate is different in the above videos. One is 30fps and the other is 25. Didn't even know that was an option. Also was the 800kb/s one stationary? The filesize is tiny. Glad to see such a reduction in filesize. Will save writes to the SD card and hold so much more video.

I take it you played back the small one and it isn't corrupt or frozen video like I was getting?
plays back fine.

https://www.dropbox.com/s/voo2f8exz5owjhu/2017_12_23_235332_1_800kb_s.mp4?dl=0
 

Wastedagen

Member
Joined
Dec 17, 2017
Messages
68
Reaction score
21
Country
United Kingdom
Dash Cam
DOD LS360W, DOD LS475W+, YI Ultra Dash Cam
No there's no option for frame rate.

I think it's all down to the quality of the camera hardware and software. I mean I only paid £61 for it. There's cameras out there that cost 4 times that.

Maybe the software isn't up to controlling a constant framerate or bit rate properly. I don't know.
 

estore009

Well-Known Member
Retailer
Joined
Nov 25, 2013
Messages
1,484
Reaction score
514
Location
Shenzhen
Country
China
Dash Cam
B1W/Mini0906
I've followed Techmoan for years and never known him to give a less than impartial review, so it's interesting his video seems far superior.
Agree :) And always it can get much more sales after his video review! :)
 

c4rc4m

Well-Known Member
Joined
May 28, 2016
Messages
777
Reaction score
250
Country
United Kingdom
Dash Cam
Viofo WR1, A119 Pro. VicoVation Opia 2, Mobius 1
Agree :) And always it can get much more sales after his video review! :)
Techmoan always makes a point of stating that he buys all the tech himself and never accepts freebies from manufacturers in return for a review. He also doesn't have a store or affiliates, but just usually posts links to where you can buy from based on places he's found.

Maybe that has changed I don't know, but his reports have always been reliable in the past.

As I said above, maybe it would be helpful to bring him in on the conversation and see if he can shed some light on the differences.
 

jokiin

Well-Known Member
Manufacturer
Joined
Jan 27, 2013
Messages
44,157
Reaction score
23,177
Location
Shenzhen, China - Sydney, Australia
Country
China
Dash Cam
Too many ¯\_(ツ)_/¯
He doesn't hide the fact that he posts affiliate links, it's mentioned on his website

AFFLIATED LINKS NOTICE

TECHMOAN.COM is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to AMAZON.COM & AMAZON.CO.UK.


He also mentions that not all products are purchased, some stuff has been pre release
 

c4rc4m

Well-Known Member
Joined
May 28, 2016
Messages
777
Reaction score
250
Country
United Kingdom
Dash Cam
Viofo WR1, A119 Pro. VicoVation Opia 2, Mobius 1
Just proving that in different lighting conditions the Camera chooses different bit rates..

This doesn't happen when using h.264 codec.... It's always using 21-22mb/s producing 160-180mb file sizes....
Actually this concerns me from a quality perspective. At night, or in lower light eg a dull day, why would you reduce the data rate? In theory at night you can see less, so less detail, so you might be tempted but there maybe a lot of detail there in the form of noise, and as the encoder presumably can't tell the difference between it and a genuine pixel, presumably that detail can in turn cause compression artefacts where high compression is used (low bit rate) due to the high level of detail being compressed - just a guess but seems logical). However, at night, the quality looks much lower in the above examples and when it's dull in the day it looks lower as well. When it's dull I can't see any justification for reducing the bit rate as the detail is still there and visible.

It seems to me that reducing the data rate according to the light conditions is just an anal way of saving SD card space and adversely affects quality. Why not simply set a data rate and leave it the same bright light, dull light and night? People will miss quality far more than an extra minutes recording space! Maybe someone needs to revisit the parameters of the VBR and up the minimum level considerably or switch it to CBR.
 
Top