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Because CineView HE utilizes both frequencies at the same time it is inherently more stable than its rivals. The CineView HE can send up to 1080p60 over Dual-Band (2.4 GHz + 5 GHz). Accsoon claims that this wireless transmission technology means you never have to worry about video or audio drop or switch signal issues again. This is a very bold claim as I have used and reviewed countless similar systems and they all drop out. I will test this claim further down in the review. The CineView HE TX and RX can be powered via a single Sony NP-F style battery. According to the company, a Sony NP-F970 battery can power the unit for up to 12 hours. I found the battery performance to be good and you can use the system for a whole shooting day without having to constantly worry about when the battery will run out. Whenever I review wireless video transmitters I do the test in the exact same place under the same operating conditions. This way I get a good idea of how various competing systems compare.
The CineView HE Wireless Video Transmitter & Receiver both weigh 200 g / 7.05 oz (including the antennas). This makes them slightly lighter than both the CineEye 2S and CineEye 2 that weigh 213g / 7.5oz. I did find that after you make the change to the Group on both the TX and RX units and you re-boot both of them it does take a little while for the RX to find the same channel that the TX is transmitting on. UVC Direct Streaming HDMI has inherent image dealy problems, and yes if you combine that along with one of the cheaper wireless video systems you can get a lot of latency. At the end of the day, there needs to be an acceptable limit that you are willing to tolerate. Delay on other similar systems If you want to have the HDMI input on the same side as the HDMI output of your mirrorless hybrid, then you can simply just face the front of TX unit forward. The only caveat with doing this is that you can’t see the screen anymore. What do you get?Since that time Accsoon has released a lot of different wireless video systems with different functionality at different price points. I have reviewed quite a few of them and they have generally performed well compared to the competition. There is a Data Rate Setting that you can adjust on the TX unit. There are three different modes you can choose from: When it was set to Normal transmission it recorded an average delay of 54.33ms when outputting from the RX to a monitor and 64.66ms when receiving a signal on the Accsoon App. So what is the delay like over HDMI from the Kinefinity MAVO LF? I measured the delay average over a series of three tests when using the Accsoon Go app and outputting directly to a monitor from the RX unit. Below you can see the results when the system was set in all three transmission modes: The transmitter and receiver provide multiple power options, including a DC barrel input, an L-series battery plate, and a USB Type-C input. Due to its low-power, fanless design, an NP-970 battery can provide up to 12 hours of runtime for each unit. Dual-channel transmission makes the CineEye 2S Pro highly resistant to outside interference and ensures that a strong, high-quality signal will be delivered over the 1200′ line-of-sight distance. The affordable wireless video space is getting crowded
The CineEye 2S uses HEVC compression and as I have already mentioned, it can send video signals up to 1080 60p. I also tested the Accsoon CineEye 2S Pro Wireless Video Transmitter & Receiver when using HDMI and found that it had an average latency of 46ms when viewing images on a monitor connected to the RX unit when the TX was set to Normal transmission. Real-world performance
Yes, having a built-in battery would have made the CineView HE smaller, but I personally prefer to be able to power a TX unit through the use of batteries or through a DC power input. Internal batteries have a habit of dying exactly when you don’t need them to! iOS & Android App PCC includes the ability to perform basic measurement functions for motion analysis. The results can be viewed immediately and then automatically saved to a spreadsheet for review. Accsoon does now face very stiff competition from a wide array of affordable wireless video systems that have come to market from various manufacturers. What it is and what it isn’t The CineView HE is also claimed to be able to transmit images and audio smoothly over a long distance, even the size of a football pitch, with a latency of less than 60 ms. The Accsoon CineView HE is well made, relatively easy to set up and use, and it has a good operating range. The quality of the image being displayed on the Accsoon app is pretty decent and it is certainly one of the best wireless video monitoring apps that is available.
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