dima.kravtsov

Agreed! But such setup already requires common knowledge of networks and cannot be named as "totally idiot proof". Register DDNS account, configuring DVR with those parameters, configuring port forwarding or VPN to access the DVR... Is no for newbie. The one that can do it by himself is already experienced enough to discern, what is more and what is less secured way to access home services from "outside". If I understand correctly from iantao99, the DVR he bought is the box, that only should be plugged into home network with internet access and that's it! The DVR will access main portal server and will provide access for the user through unique and simple interface. Such setup doesn't require any router configuration (port forwarding, firewall etc), it doesn't need any static IP or DDNS services... Simple and clear! But as we know, all simplicity always comes on account of something else... in our case this is security! Dima

This is really very depends on how such "access page" is build. Send me the link and I will check. Basically, such web page should work as substitution to standalone software that is used to access DVR. But in order to make your life (as a customer) easier such "application" can be implemented as web-page with Flash, HTML5 or with ActiveX video player build-in into the web-page. Definitely, such way accessing your DVR is less secured than standalone application. If you have no experience to detect, that your login and password can be intercepted, then the only way is trusting you DVR supplier and hope he is the "honest" one.

Tom, Could you recommend PayPal checker for Ebay? I am old and frequent buyer on eBay and have never heard about such checkers. Therefore, I cannot discern two different buyers with the same PayPal account.

Second seller has much higher rating and very good positive feedback. Go with them, but make an offer. His lot allows it. Start from 250 USD and I think you can buy the card at 320-340 USD.

Please, give us more info "from the field" about your DVRs? What advantages you see? Have you operated/build projects with them? What are advantages and disadvantages? Dima

+1 Have dealt with this one. Very positive impressions!

As far as I understand, you have DVR with 8 cameras at home and want secured way to see them through internet from your office for example. There are several ways to do that but it's important to know what kind of DVR you have? Is this Windows based one with the software and PCI plug-in cards or "black-box" with video inputs? Basically, you need secured channel to your home DVR from "outside". If your DVR is Windows based (or Linux based one with root access) than best and easiest way is using Hamachi (LogMeIn) private VPN which is the easiest way to establish secured connection between your home DVR and outside world. Or some other solutions like OpenVPN, but if you have no experience in network it would be quite a task for you to configure and run. Although... it's not rocket science! In any case, I advice you to spend some money and ask from professional network engineer to do it for you with explanations. Definitely, it can be done remotely with Skype and over some remote administration program like VNC. And no physical presence is needed.

Interesting! Tour from England to south Spain. It would definitely kill my ass OK, now lets see the details: 1. How long does it takes the whole tour there and back? 2. How many channels every bus is recording? 3. What framerate and what resolution is needed for the recording? 4. What exactly the DVR is recording: a. Passengers b. Bus driver c. The street before or behind the bus I need this info in order to calculate how much disk space is needed if SerVision's DVR would be used. One of the main advantages of SerVision's technology is video compression. It's based on MPEG4, but little altered to optimize it for narrowband. Definitely, SerVision's video compression is not competitor for VC1, H.264 or WebM (VP- at high bitrates and high resolutions, but so far, QVGA and VGA performance at decent framerates up to 15 FPS (well, who needs more at security?) beats those codecs. This is why even on this forum SerVision's products has name as the best one for live video transmission over cellular networks and other narrowband networks. Now, it's really interesting to calculate how much would disk space would SerVision's DVR use. So, your answers are needed. This also would be really interesting to see some footage from those buses. I can provide footage from SerVision one and we can compare. Regards, Dima

CVG-M uses microSD cards, but not SATA SSD. In my projects I recommend to my customers SDHX or SDXC class 6 or 10. Rearding MVG, I don't know what SSD disks SerVision uses (if use at all), but I have deal with not-well-known company Memoright, that has plenty of different SSD disks for all type of applications. I prefer STM-25 or FTM-25 models. They use the latest Inginix controller, which is one of the most important parts of SSD disks today. And peformance and durability very much depends on this part. Previously, I had experience with Intel X25-V and X25-M and its OEM clones from Kingston and some other models. What can I tell, definitely, X25-V is great one for DVR solutions. It has write speed greater than X25-M, but lesser performance in read. Bit for DVR this is exactly what needed... good write and decent read (under "decent" I mean SSD ranks, 80-90 Mb/sec). Moreover, X25-V has very good price / per megabyte in comparision with other SSD. Another tip for SSD users, is switch-off auto defragmentation which is totally useless and even can harm your disk and also when preparing the system, *always* leave 10-20% of SSD disk unformatted and untouched (during partitioning). This is necessary for longer SSD life due to incompatibility between common sector size for file system and internal flash block size.

Insult? Where did you saw insult, my friend? It was quite calm conversation about mobile DVR in general, where different opinions were presented and I disclosed my experience as engineer with 8 years of experience in a DVR field. Moreover, I don't work for SerVision for almost 3 years. Yes, I do sales and projects but range products I sell quite wide and SerVision is not the only one I have in my portfolio. My way to go, is presenting upon the customer all technical options and problems, that can arise during the project lifetime and don't just rely on: "I have them run much longer..."! It can run, and it cannot! I don't rely on "chance", but on deep understanding what are requirements from all aspects. So far, proper SSD solves most of the problems in mobile DVR field. Be wise, think wider...

There are plenty of SSD disks available that definitely cannot be used for any sort of applications where big amount of data should be written constantly, like DVR solutions. Most of them are SSD of first generations or low-cost SSD on buggy controllers. This is very good that you revealed the problematic SSD disks at the beginning, but HDD can make more problems, when giving you for first year sense of safety and stability and starting make problems in year or more. As I told, every project should be considered with great care and any *GOOD* mobile DVR (IMHO), should be able to use SSD along with HDD. HDD has its advantages, exactly as SDD has. In order to reveal those advantages DVR should know how properly work with suitable media and don't just simply *write*. p.s. Thanks for link to Seagate disk! It looks interesting! But for low temperature there is other problem - condensation, that brings water inside the system and such condensation inside HDD can kill the disk. I hope Seagate engineers has thought about it as well.

I agree, that HDD can work within mobile DVR continuously for quite long period (2 years and more) without problems, but such setups vary from project to project due to different environmental conditions and should be considered with great caution when considering them as basis for new project. Unfortunately, since SSD had got mass availability HDD was the only solution and any mobile DVR manufacturers used various technologies to reduce risks of HDD failure due to shocks, vibrations and temperature... SerVision is not an exception. There are 3 generations of SerVision's mobile DVR that used HDD as a storage medium and there are statistics already, that can tell where is safe enough using HDD and where such setup can lead to continuous problems.

Hi, Rory! Already not.

Definitely, solid-state-disk based DVR is MUCH better for mobile applications. In general, as less moving parts you have in your DVR, than better it withstands vibrations, shocks and temperature. You can check CVG-M (http://goo.gl/WnRYc) solution from Israeli company SerVision: it's small 2 channel DVR with build-in GPS and UMTS modem. PM me if you need more details and successful stories. Meanwhile, you can check SerVision's website for more details regarding CVG-M.

Definitely, GSM connectivity provides quite harsh conditionals for live video. EDGE can provide enough uplink for 2 QVGA streams at quite low FPS. In case of UMTS the situation is better, but still, uplink is not enough for 4 channels to be transmitted at live at adequate FPS (more than 10). HSUPA can be definitely the best option for mobile system like MVG when all 4 channels should be accessible "in live". Broadband from the beginning can provide decent conditions for smooth video streaming. Along with SerVision's patented video streaming and compression methods can give very good results. As a standart, SerVision uses QVGA resolution in color at 10 FPS - all this requires 96 kilobit-per-second per channel....