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Boogieman

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Posts posted by Boogieman


  1. Take video from an ip camera then test it. Dont believe me, knock yourself out.

    I'm not sure what you want me to test.

    I can prove that with high motion 30Mbps looks better than 15Mbps (everything else being equal), but I don't think that is really the debate.

    Are you implying that IP surveillance cameras are of such poor quality that the difference between 15Mbps and 30Mbps would be unnoticeable?

    I would find that surprising. They have decent sized lenses, brand name sensors, and realtime h264 encoders are largely the same in terms of performance.

    I would assume that given equal data rates to a GoPro, a quality IP camera would look very similar.

    No? What is the limiting factor?

     

    Seems to me that you are trying to use an ip camera for a purpose other than surveillance. What are you trying to accomplish?

    I am using it for something other than surveillance, namely broadcast use, though that's not as fancy as it sounds.

    For example, I already stated that I am looking for something that is "GoPro" quality in terms of video.

     

    Where are these going to get installed. What is your budget?

    They would be installed on the exterior of a large boat.

    Lots of motion in the picture, hence the need for high bitrates.

    Being installed by the ocean I don't expect them to last forever.

    The budget is fairly low, about $400 - $500 per camera.

    You cannot compare the changes you see in the gopro to an ip camera......Forget about the high bitrate...look for a camera that provides a good image. You are going about this the wrong way....but seems like you know better...


  2. Thanks thewireguys, good links and info. I do need 30fps and about 120° FOV, one of the Axis cameras looks perfect.

     

    Because the camera sensor/optics is much more important.

    Additionally, even when using the same camera there is a point when increasing bandwidth produces no discernible image quality improvement. So you are wasting storage space.

     

    I would agree that optics and sensor are VERY important to creating a good image. This typically means a large piece of glass and a large sensor. However, under full sunlight, the requirements are fairly minimal. A small, inexpensive fixed focus lens works wonderfully. The sensor is getting gobs of light, so it doesn't need to be that fancy. Hence awesome looking video from tiny lenses and sensors on phones.

     

    And for a given camera, there is a point of no discernible improvement with bitrate. I would argue that for the typical h264 encoder that point is reached somewhere near 40Mbps. Assuming you have a decent camera, the data rate and compression scheme are the final word on quality. If your video is full motion, with every pixel changing in every frame, you will need a high bitrate. My experience with h264 is that anything below 10Mbps (VBR, 1080p30) is going to look "muddy". You will lose detail in wind-blown tree leaves, water ripples, hair, etc.

     

    Is Sony "wasting space" when they record MP4s cameras at 28Mbps? What about their pro cameras at 50Mbps? The difference is night and day.

    Is GoPro "wasting space" when you can only choose between 30Mbps and 45Mbps?

    Why, if I take uncompressed RAW footage and compress it with h264, can I tell the difference between 16Mbps and 24Mbps?

    Take video from an ip camera then test it. Dont believe me, knock yourself out. Seems to me that you are trying to use an ip camera for a purpose other than surveillance. What are you trying to accomplish? Where are these going to get installed. What is your budget?


  3. I was needing some help and suggestions about putting together a new dvr system. I already have all the cameras(they came from an old DVR set and the main unit burned out). I have a 3tb harddrive and I want something with support for at least 24 cameras and also allows me to view them from my phone or tablet. I am not certain as to which cpu or gpu to get that would best serve such a system nor do I know which DVR card to get. I am tech savy and have built my own gaming systems before but I don't know where to begin as to purchasing a DVR card as I don't want to spend $2,000 when an $800 card will do the same thing. Any tips and suggestions would be great!

    Stop. Dont waste your money on ANY dvr card. You dont need one, its 2016.

    Start researching IP cameras. Throw out those old analog cameras.

    Alternatively, if you are stuck on using the cams, just by a replacement DVR.


  4. The entire premise of the OP is flawed higher bitrate does not equal better image.

    Why would u say so?

    Because the camera sensor/optics is much more important.

    Additionally, even when using the same camera there is a point when increasing bandwidth produces no discernible image quality improvement. So you are wasting storage space.


  5. ...

     

    Now why it's in mjpeg mode and not h.264 that should be the real question because mjpeg will use more bandwidth typically.

    Not easy to find the cheap and competitive chipset to be used for h.264 compression of UHD sized video (3840X 2160X30FPS). So they probably went for MJPEG compression.

    Wow, you really have no clue....This is an axis camera not some low end garbage.


  6. In case of a tight budget, you might as well go for full HD Ethernet cameras. If you don’t have much technical idea with their installation, I’d suggest you to go for a custom order at Internet Security Systems. They have everything from 30$ to $30k, so you might stumble upon something to fulfill your requirements. Good Luck!

    I suggest that everyone avoid the shop you are spamming for.


  7. I ended up cutting off around 4m of slack each end (i wanted the extra cable until i had confirmed position of both switch and camera) it now works. So i guess i'll never know whether its junk cable or my termination at the connector! well until i install another camera...

    Does the box say CCA? if it does throw it out.


  8. Dear Mr Dhyndi,

    Good day.

     

    This is Royan from Wanscam, which is a professional manufacturer of IP camera.

     

    I'd like to show our Solar Power IP Camera which is also battery powered, it can help you to monitor your garden without changing batteries every couple of days, and it is easy to install, if you want to know more about, please hurry up and contact me quickly. Cause it is on sale this July.

     

    My e-mail address: sales06@wanscam.com

    Skype ID: wanscam006,

    Whatsapp: +8613510806209

     

    Best Regards,

    Royan

    Wanscam is not a professional camera manufacturer. Please. Stop spamming the forum. This thread is THREE years old.


  9. Wow thanks for the help. If I buy everything separate, will it come out cheaper? And are there compatibility issues? Or can I buy any dvr with any analog cameras?

    If you dont know what you are doing, buy a kit. Or find a seller that will custom create a kit.

    No, despite what sunnykim says, the d1 and wd1 are HORRIBLE resolution (hes a china scammer) you cannot mix and match all analog. Hes is referring to low resolution analog that you dont want anyway. You generally cannot mix and match HD over coax systems, like cvi/tvi.

    You want at least 1080p.


  10. Just checked out some IP cameras on Costco, holy crap they're expensive. Should I stay away from analog in general? or are there still decent analog surveillance systems?

    If you insist on analog, then go with a cvi/tvi HD over coax system. Costco will have 1080p lorex/swann analog systems.

    IF you go this route run ethernet and use baluns so you can upgrade to ip without rewiring.


  11. Have you crimped the cable to conform to the 568B standard?

     

    Yes, I've done many crimping and all following the 568B standards, like I said my Macbook Pro had no problem connecting to the router at the other end, so ip address from DHCP, ping and browsing the net just fine.

     

    Just the camera is not working and I tried three different HIK camera's with the same result.

    What EXACT cable are you using. Post a link to the cable.


  12. For home application, D1/960H/720P/1080P would be fine. I mean they are not necessarily to be IP cameras,costing more. And More than 1080P could be over-kill.

    Glad to see Sunny!

    You start to recommend 1080P cameras

    one day you will mention 3MP and more

    I hope the day would come soon when all monitors we are getting, by default, at least UHD-4K or UHD-8K and as low as less than U$200.

    You still dont get it. Even if your monitor is vga you can benefit from high res. Its a little know function in China, its called digital zoom. So when you zoom into a high res image AFTER the fact you get a MUCH clearer image. I guess the Chinese have not stolen the zoom technology yet....

    How can you ever expect to be taken seriously if you cant understand the basic concept of zooming into a high resolution image and that a high res monitor is NOT needed for that.

    Dont worry sunny, I will be he to expose your constant lying. I personally think you get a kick out of screwing over US buyers.


  13. If your research led you to amcrest you are not doing it right. READ forums. Also ignore anything sunnykim says, he is a china scammer. Recommending D1 resolution should be an indicator that he is just lying to you so his company can push that junk.

    Buy an IP system that is 1080p. The ip systems at costco are made by dahua or hikvision. Both good companies. Long warranties and LIFETIME return option to costco.

    There are other great resources and sellers but this forum does not allow mentioning them.

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