VIOFOA129 Pro Duo 4K Dual Dash Cam 3840 x 2160P Ultra HD 4K Front and 1080P Rear Car WiFi Dash Camera 8MP Sensor GPS, Buffered Parking Mode, G-Sensor, Motion Detection, WDR, Loop Recording

I had previously purchased a Rexing V1P Pro camera, which I liked, but the GPS encoding on the video files was in a proprietary format, so I returned it and bought this.Whereas the other camera is bulky, but lightweight, this camera is small, dense, and surprisingly heavy. One feels like a toy when compared to the other.I chose to use the default power connector, as parking mode is not important to me. The kit comes with a lot of extra mounting tape, so if you mess up your placement, or move it, you are all set. Be careful to leave room for the power cord when mounting the GPS block. I almost mounted it too close to where the rear-view mirror mounts on the windshield, and had slight difficulty plugging it in. The wiring with this camera is thick (heavy duty), and holds it’s shape well, which makes it real easy to install. This is only the 2nd time I’ve ever installed front/rear dash cams and it literally took me less than 15 minutes. Because the wires are so thick, they hold their position well, and hiding the wires from the front dash cam into the header is real easy. The kit also includes a tool to help install the wiring, which is real nice if you haven’t done it before.The memory card slot is on the left side, so removal is convenient. Just be sure to use two hands when ejecting the media. The camera will slide off the GPS mount if you push too hard. This is the one thing I think I would have designed differently. If the mount clipped on and slid to the right (instead of left), you could remove the memory card easier.This camera shuts off the screen when you’re driving, which I wasn’t used to at first. After running it around for a little while, I actually prefer this to other dash cams, as it is less distracting while driving.The iOS software is very good. I found only one bug, whereas if you put the camera resolution into 1080 x 1080 mode, the app will crash immediately when you try to connect to it. The app functions as expected under all other circumstances (so far). The 5GHz wifi is FANTASTIC. Download times for clips are blazing fast as compared to the other camera I had used. Note that 4K files are huge (1.6GB for 5min), so it’s going to be more efficient to remove the memory card and plug it into the computer. Speaking of which, VOIFO even provides a USB adapter for the memory card.Video clip options are great with this camera, offering 1,3,5 and 10 minute clips. Personally, I like to divide the clips into 5 minute segments so this camera does exactly what I need.The only thing that I wonder long-term, is how well the card slot will hold up from constantly removing the memory chip to retrieve the footage. For this reason, I purchased a warranty for the camera.The 4K video quality is absolutely amazing, and the 130/140 field of view front/rear is perfect. Unlike other cameras, there is no fisheye effect due to the wide angle. The mic on the camera also exceeded my expectations.The only annoying/missing feature on the camera is the lack of a daylight savings time setting. You must switch the timezone offset to match your timezone when daylight savings comes and goes. This is a software setting that could easily be addressed in a future firmware update. Not a dealbreaker for me.4K video playback is choppy in dashcamviewer on macOS due to Quicktime. Too bad, as that’s the whole reason I bought this camera. I’m hoping that newer builds will read the H.265 codec. RE: H.265 codec, there is an undocumented feature where you can change the encoding from H.264 to H.265 by holding the mic button for 4 seconds. H.265 encoded videos will play smoothly in Quicktime on macOS, whereas the H.264 videos will not. Both formats play perfectly in VLC, so if you don’t care about following your footage around the map while you play it, even better! The software has options for displaying speed and GPS coordinates on the footage if you want, and you can hide the camera model from the footage if you prefer not to show it. I have not seen that feature on other cameras. Additionally, you can add a custom label to your dashcam footage which might be useful.If you’re looking at other cameras, and you’re wondering if the cost differential for this one is worth it, I would say go for it! The worst thing for me is the poor 4K playback support in the software I wanted to use, but I’m confident the developer will solve that as more 4K cameras hit the market. Virtually everything else about this camera either meets or exceeds my expectations.

I just bought an A129 Pro Duo to replace a Mini0906 (that thing was NOT one of the best cams like dashcamtalk claimed, but was a complete turd).=== Let's get the negatives out of the way:On the A129 Pro Duo, the wifi feature is not broadcasting. I have tried 2.4GHz, 5GHz auto, and 5GHz forced to channel 40, and 5GHz forced to channel 36, and forced to 161; the SSID is never broadcast. As the MAC is not listed on the device (SHAME ON YOU, VIOFO!), I checked for new APs without an SSID and toggled wifi on and off, and no new MACs showed up, so it appears wifi is totally nonfunctional.It is otherwise a fantastic unit and I will be updating the review after I test night recording. I'm docking four stars as one of the reasons I bought this unit was wifi connectivity, and yet, I will be forced to pull the microsd card and use dashcamviewer to review footage. WTF, VIOFO? Fix the firmware please. Docking four stars for this.Also, Mini USB connectors? Why not USB-C? WTF? If you had used USB-C I could have prewired my car before the camera arrived.No volume setting for that infernal beep? Only On/OFF? I want the beep, I just don't want it to be eardrum-piercingly and nerve-gratingly loud. Do us a solid and give us a volume control for the beep, please, even if it's just "LOUD - MEDIUM - SOFT - OFF"And, why not a full kit which includes the hardwire kit, bluetooth remote and polarizing filters for both the front and rear cameras?OK, so with all the negatives that garnered a 1-star rating (only because I could not rate it zero) out of the way:=== Positives1. IT HAS A SCREEN! I skipped the Thinkware U1000 because even though it's objectively a better product, I wanted an integrated screen in case WiFi fails2. DAY, FRONT Video quality is GREAT - at least in daylight (I will update this review over time).3. It is easy to install4. I like that there is a prewiring kit and a customizable parking mode (again, I will update this over time)5. I like the visual recording, wifi, and mic LED indicators so I can check without having to wake up the screen6. THANK YOU for implementing a screen timeout/"screen saver" feature. With most dashcams with screens, I need to manually turn the screen on and off. It's nice being able to tap a button and check status and let it time out and turn off on its own7. I like that it's low profile and will not interfere with the visor as much as other models do.8. I like the faint LED in the GPS mount; with the camera pulled off the mount, I can see that the GPS mount is receiving power9. I like that WiFi can theoretically be toggled on/off with the overlay button (I say theoretically because WiFI actually doesn't work at all)10.=== Suggested improvements:* Switch over to all USB-C connectors* Support 1TB+ MicroSD cards* Allow your app to read MicroSD cards (since wifi doesn't work at all)* Implement a more active cooling scheme (phase changing heat pipe + maybe a fan)* Cloud recording/storage/vehicle tracker/locator connectivity: Cloud connectivity? (I'd subscribe for $5 to $10/month if you would archive 30+ days of coverage and allow easy merging/exporting from the cloud - this would be a nice recurring revenue stream for you)* Car locator feature (easy with GPS + cloud connectivity), with live view* Android Auto/Carplay integration to use rear channel as rearview mirror in infotainment for those of us who drive vehicles with useless back windows (sportscars, trucks, etc.)* a full kit which includes the hardwire kit, bluetooth remote and polarizing filters for both the front and rear cameras?* 3 channel support* higher quality sensors both front and rear <---<<* flip screen or android auto plugin to display either channel, use rear channel as supplemental rearview mirror view=== Update day 2:I haven't recorded any footage for a review/sample video yet; I have been playing with parking mode settings and H.265 vs. H.264 and when I used H.265 and let parking mode run overnight and retrieved it in the morning, the camera was so hot it felt scalding - it hadn't been in the sun yet and the car interior was still cool. I did not have my IR thermometer handy so I did not actually measure it but I'd guess it was 70c at the very least. I was nervous letting it run in my Stinger so I disabled H.265 and reduced the video bitrate from maximum to high.Resolution maximum, WDR enabled, bitrate Maximum, EV = 0, rural/light suburban roads:Reviewing day footage on 4K screen w/Dashcam Viewer, I can easily read license plates of cars I am following. It is very difficult to find any frames where license tags of oncoming cars are readable. However, nighttime capture of registration tags are not readable. There is much blooming which of course obscures much of the scene.Rear channel, 1080p:Reviewing night footage, WDR enabled, bitrate Maximum, EV = 0, rural/light suburban roads:License tags of oncoming and following cars unreadable. Rear camera underexposed, difficult to make out detail on rural roads, cannot read following vehicles' plates (expected). Basically, meets expectations, provides some protection.== ExchangeVIOFO want me to send the camera in for exchange. If it comes to that I'll do an Amazon exchange, returning the replacement box with the old camera since I had already installed the cables and tossed the package in recycling. I was hoping they'd come back with "Oh the firmware is buggy and here's an update" :-( On the bright side they respond fairly quickly.=== Corrections to previous complaint:Time DOES appear to update automagically via GPS.=== Update: ===I received a replacement - I submitted a support ticket and they made the exhange super easy, with advance shipment of the dashcam. I am pleased to report that the wifi features work on the replacement camera. I am happy with the unit so far. The high temperature does concern me a bit though.=== Update 15 months later: ===Unit is under the extended warranty (I had to register it because the original came DOA). I was previously very happy with it but now the camera is freezing when powered through the integrated USB port. When powered through the GPS module/mount it functions fine - NO freezing, but the unit runs hotter and drains the battery quickly when powered through the GPS mount (this is a common problem discussed on messageboards, mentioned in a couple reviews here, etc.). Well, they tried to blame the USB cord (uh, no, I am using the hardwire kit), or the SD card (I already indicated I write/read tested the SD card using both Windows and Linux, so the SD card is not the problem), or parking mode (No, I will NOT turn off parking mode, as that is THE feature which prompted me to select this product).As such, all the way down to 1 star because their customer service has declined and they're obnoxiously patronizing with their canned responses.=== Another update, a few days later ===I just learned they are off for Chinese new year. With that in mind, I can only conclude they took the time to try to lend some support during the holiday so I am restoring my original rating of the product, and I humbly apologize to Viofo for my jumping to conclusions.

Long-term review: I have had this dual dashcam setup for over two years.Installation: This was not difficult, but it did take a bit of patience and imagination to route the wiring neatly from the front camera to the rear camera.Video: I really like having the feature of simultaneous front and rear video streams. On one occasion, another vehicle nearly broadsided my vehicle, and capturing both streams made it more clear how close it was, and whose fault it was. Video quality is good overall, both day and night, although there have been some cases where I had trouble reading license plates even on individual video frames.Firmware: The update process is easy. You just format the memory card, download the binary file, and copy it onto the card. The one thing I didn't like was that it required a custom executable (provided by the vendor) to properly format the card.Reliability: The camera worked well most of the time, with occasional but rare unexplained gaps in video coverage. After a little over two years, the front camera unit failed (no response to applied power), and I found out only when I failed to capture an accident that happened right in front me.Customer service: I have owned and used Viofo dashcams in all my household's vehicles for over 8 years. One reason I buy them is performance, and the other is customer service. In this case, my failed unit was past the warranty, but Viofo still backed their product by providing me a replacement front camera at a reasonable cost. This avoids wastefully buying an entire new system, and it is a very reasonable approach.I deducted one star due to the failure described above, but I do strongly recommend Viofo dashcams, especially the dual type.