Mtz
Well-Known Member
- Joined
- Nov 15, 2012
- Messages
- 4,365
- Reaction score
- 3,047
- Location
- Nice place
- Country
- Romania
- Dash Cam
- Viofo A229 Pro TeleQuad (the best dashcam in the world!)
We can win only if we will return back to sellers the false advertised products! More returns, more changes to win.
I was fighting against fake 4K action cameras here. Now is time to fight against fake 4K dashcams! This is the biggest dashcam forum in the world so we should raise our voices.
4K Ultra HD resolution is 3840x2160 and FPS over 24FPS. 2880x2160 found on some dashcams is not 4K, is just 2160p and you will see that in reality is just 2K! The camera is recording the video at 2880x2160 but in the header of the videos is written an information for the player which is telling him to play the video file at 3840x2140, so the player is making a resize of the image. You will see in reality a 2880 resized to 3840 but keep in mind that also that 2880 was resized by the camera software before encoding the image into the video.
It is expected that some manufacturers to use some poor chipsets which are resizing a Full HD video to 4K and in this way they will cheat you. Is expected such manufacturers to not use real 8MP CMOS so we can catch them here but also their video could be recorded at just 15-20FPS which is also fake.
Please look at this image to understand why is so needed a camera to be a real 4K. We need that much more video information over the Full HD. We do not need a FullHD or a 2K resized to Ultra HD because we are not obtaining more details on our videos because we will have the same Full HD or 2K recorded at higher bitrate and wasting space on the card.
![4K vs FullHD.jpg 4K vs FullHD.jpg](https://dashcamtalk.com/forum/data/attachments/36/36512-9e61a9b31bbecbad45a466377a06b19e.jpg?hash=nmGpsxu-y6)
The golden rule: a 4K dashcam must to have at least a real 8MP Image Sensor. No 8MP at least = fake 4K.
How to look if a camera is a fake 4K:
1. The real 8MP CMOS specifications: must to contain at least 3840x2160 resolution
2. Chipset specifications: must to contain at least 3840x2160 resolution; but take care to the FPS because recording at everything under 24FPS is considered fake because Ultra HD standards are not accepting FPS like 20FPS, 10FPS, 15FPS. Normally UltraHD is over 30FPS.
3. Brand (an well known brand are expected to release real 4K dash cameras)
4. Price: right now is expected a real 4K camera to cost over $150 China price
The list of fake 4K dashcameras you should not buy:
1. Aukey 4K dash cam DR02 J. Reason: Aptina AR0521 CMOS which is just 5MP = 2.5K, not 4K. Aukey was releasing also fake 4K action cameras so creating fakes is a common thing for them.
![Aukey dr02 J fake 4K amazon.jpg Aukey dr02 J fake 4K amazon.jpg](https://dashcamtalk.com/forum/data/attachments/36/36511-01715874adf0949b5ab2b3b0ada747bd.jpg?hash=AXFYdK3wlJ)
2. Rove R2-4K Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
3. Azdome GS63H Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
4. Rexing V1 4K UHD Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
5. Acekool 4K Dash Cam Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
As you can see most of them are using the OmniVision OV4689 4MP CMOS. On its specification it is written: The 1/3-inch OV4689 (which is a small sensor compared to others) can capture full-resolution 4-megapixel high definition (HD) . This 4MP does not means the video is recorded at 4K (3840x2160p), but it can be recorded up to 2688x1520 (4085760 pixels = 4MP) which is only about 2K resolution. So in reality you will have a Full HD or 2K video resized to 4K Ultra HD. Very Fake!
The Aptina 0521 size is 1/2.5" which is bigger than 1/3" OV4689 which means more details and better for Aptina and it also have more pixels: 5MP vs 4MP. But the Aptina maximum resolution is just 2592x1944 (5MP) so it is not even 2880x2160p as Aukey declared. They are doing software resizing.
Both OV4689 and AR0521 are offering smaller images than the declared 2160p and this means the 2880x2160p image from the cameras specifications are also fake! So even the declared 4K Horizontally Interpolated 2880x2160p image is fake!
The fake 4K cameras from the same manufacturer costs a little more compared to their Full HD versions just to take more money from you, by cheating you, because on the case is printed that fake 4K Ultra HD.
For example the Rexing V1 Full HD version is with Sony Exmor chipset and costs about $100. The Rexing V1 4K is with OV4689, a cheaper CMOS compared to Sony Exmor but it costs 40% more ($140) just because they printed the fake 4K resolution on the case. So you will pay 40% more just to be cheated.
To be continued...
Please report!
Please, not too much offtopic. I will add your reported cameras to first post of this thread.
enjoy,
Mtz
I was fighting against fake 4K action cameras here. Now is time to fight against fake 4K dashcams! This is the biggest dashcam forum in the world so we should raise our voices.
4K Ultra HD resolution is 3840x2160 and FPS over 24FPS. 2880x2160 found on some dashcams is not 4K, is just 2160p and you will see that in reality is just 2K! The camera is recording the video at 2880x2160 but in the header of the videos is written an information for the player which is telling him to play the video file at 3840x2140, so the player is making a resize of the image. You will see in reality a 2880 resized to 3840 but keep in mind that also that 2880 was resized by the camera software before encoding the image into the video.
It is expected that some manufacturers to use some poor chipsets which are resizing a Full HD video to 4K and in this way they will cheat you. Is expected such manufacturers to not use real 8MP CMOS so we can catch them here but also their video could be recorded at just 15-20FPS which is also fake.
Please look at this image to understand why is so needed a camera to be a real 4K. We need that much more video information over the Full HD. We do not need a FullHD or a 2K resized to Ultra HD because we are not obtaining more details on our videos because we will have the same Full HD or 2K recorded at higher bitrate and wasting space on the card.
![4K vs FullHD.jpg 4K vs FullHD.jpg](https://dashcamtalk.com/forum/data/attachments/36/36512-9e61a9b31bbecbad45a466377a06b19e.jpg?hash=nmGpsxu-y6)
The golden rule: a 4K dashcam must to have at least a real 8MP Image Sensor. No 8MP at least = fake 4K.
How to look if a camera is a fake 4K:
1. The real 8MP CMOS specifications: must to contain at least 3840x2160 resolution
2. Chipset specifications: must to contain at least 3840x2160 resolution; but take care to the FPS because recording at everything under 24FPS is considered fake because Ultra HD standards are not accepting FPS like 20FPS, 10FPS, 15FPS. Normally UltraHD is over 30FPS.
3. Brand (an well known brand are expected to release real 4K dash cameras)
4. Price: right now is expected a real 4K camera to cost over $150 China price
The list of fake 4K dashcameras you should not buy:
1. Aukey 4K dash cam DR02 J. Reason: Aptina AR0521 CMOS which is just 5MP = 2.5K, not 4K. Aukey was releasing also fake 4K action cameras so creating fakes is a common thing for them.
![Aukey dr02 J fake 4K amazon.jpg Aukey dr02 J fake 4K amazon.jpg](https://dashcamtalk.com/forum/data/attachments/36/36511-01715874adf0949b5ab2b3b0ada747bd.jpg?hash=AXFYdK3wlJ)
2. Rove R2-4K Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
3. Azdome GS63H Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
4. Rexing V1 4K UHD Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
5. Acekool 4K Dash Cam Reason: OV4689 4MP CMOS. Trying to cheat you that 4MP = 4K. No! 4MP = 2K. 4K needs 8MP CMOS.
As you can see most of them are using the OmniVision OV4689 4MP CMOS. On its specification it is written: The 1/3-inch OV4689 (which is a small sensor compared to others) can capture full-resolution 4-megapixel high definition (HD) . This 4MP does not means the video is recorded at 4K (3840x2160p), but it can be recorded up to 2688x1520 (4085760 pixels = 4MP) which is only about 2K resolution. So in reality you will have a Full HD or 2K video resized to 4K Ultra HD. Very Fake!
The Aptina 0521 size is 1/2.5" which is bigger than 1/3" OV4689 which means more details and better for Aptina and it also have more pixels: 5MP vs 4MP. But the Aptina maximum resolution is just 2592x1944 (5MP) so it is not even 2880x2160p as Aukey declared. They are doing software resizing.
Both OV4689 and AR0521 are offering smaller images than the declared 2160p and this means the 2880x2160p image from the cameras specifications are also fake! So even the declared 4K Horizontally Interpolated 2880x2160p image is fake!
The fake 4K cameras from the same manufacturer costs a little more compared to their Full HD versions just to take more money from you, by cheating you, because on the case is printed that fake 4K Ultra HD.
For example the Rexing V1 Full HD version is with Sony Exmor chipset and costs about $100. The Rexing V1 4K is with OV4689, a cheaper CMOS compared to Sony Exmor but it costs 40% more ($140) just because they printed the fake 4K resolution on the case. So you will pay 40% more just to be cheated.
To be continued...
Please report!
Please, not too much offtopic. I will add your reported cameras to first post of this thread.
enjoy,
Mtz
Last edited: