xico1984 0 Posted August 21, 2011 Hi! I was looking for hours... about this question, and nothing in cctvforum or in google Some one knows it? I am planning to buy a 700TVL sony camera (1020(H)×596(V) PAL), but... i don't know if some DVR that can record up to 704x480, can play (in the air - Web utility - RTSP - Quicktime - Java ) videos with a bigger resolution. In this case, 1020×596. Thank you!! PD: Play =>Obviously not mean playing recorded videos. Some data Camera Weatherproof IR Camera SONY Colour CCD ICX673AKA http://www.sony.net/Products/SC-HP/cx_news/vol61/pdf/cxd4127_4816gg.pdf 42 x 5mm diameter Infra Red LED IR Distance:40-45m External lens adjusting, DC12V Lens: 2.8-10mm Manual Zoom Lens CCpix 17703-Z3B Horizontal Resolution 700TV Lines Low Illumination Sony ExView HAD II CCD with Sony Effio-E DSP Usable Illumination 0.001Lux/F2.0 TV System PAL IR LED ￠5 X42 PCS IR Series Distance 40-45m Lens 2.8-10mm Manual Zoom Lens Sync System Internal IR Status Under 10 Lux By CDS Usable Illumination 0 Lux/F2.0 (LED ON) IR Power On CDS Auto Control S/N Ratio ≥54dB (AGC OFF) Gamma Correction 0.45 Video Out Composite Signal (1.0Vp-p, 75Ω) DVR Avtech AVC 798 / Maximum Recording Rate Frame 704×480 pixels with 120 IPS / 704×576 pixels with 100 IPS Field 704x240 pixels with 240 IPS / 704×288 pixels with 200 IPS CIF 352×240 pixels with 480 IPS / 352×288 pixels with 400 IPS KPD 679 Maximum Recording Rate Frame 704Ã480 pixels with 60 IPS / 704Ã576 pixels with 50 IPS Field 704x240 pixels with 120 IPS / 704Ã288 pixels with 100 IPS CIF 352Ã240 pixels with 240 IPS / 352Ã288 pixels with 200 IPS Share this post Link to post Share on other sites
SEANHAWG 1 Posted August 21, 2011 Yes that is the only thing about the new Effio-E cameras, on pretty much most DVR's that are currently out in the market, you will not be able to utilize the super high resolution for that camera. With most DVR, the max TV lines that will be recorded is 550 TVL and a pixel count of 704x480 or 720x480. Apparently, Dahua is making a DVR that can utilize and recognize the full high resolution qualities of these cameras but to be honest, I am not real sure how it works, anxious to see though. With that being said, the Effio-E is still a great chip and there is alot more qualities that are good about it other than its high resolution. Share this post Link to post Share on other sites
Soundy 1 Posted August 22, 2011 Three things to keep in mind: 1. "TV Lines" is a nebulous spec at best, even when manufacturers AREN'T making up numbers for it - don't get too hung up on it. 2. NTSC video itself is limited to 525 vertical lines (625 for PAL). There's no getting around this *standard* without moving into true high-def standards, or IP. 3. There isn't a direct correlation between sampling resolution and "TV Lines", so again, don't get too hung up on it. At most, think of it as weakest-link theory, and if your camera has higher resolution that the video standard supports, then the camera won't be your weakest link for image clarity. Share this post Link to post Share on other sites
ak357 0 Posted August 22, 2011 Yes that is the only thing about the new Effio-E cameras, on pretty much most DVR's that are currently out in the market, you will not be able to utilize the super high resolution for that camera. With most DVR, the max TV lines that will be recorded is 550 TVL and a pixel count of 704x480 or 720x480. Apparently, Dahua is making a DVR that can utilize and recognize the full high resolution qualities of these cameras but to be honest, I am not real sure how it works, anxious to see though. Sean, I have idea why don't we create CCTV Forum test chart, very simple to use and then everybody can post their results I kinda start to make my self and almost done for basic test Share this post Link to post Share on other sites
ak357 0 Posted August 22, 2011 Three things to keep in mind: 1. "TV Lines" is a nebulous spec at best, even when manufacturers AREN'T making up numbers for it - don't get too hung up on it. 2. NTSC video itself is limited to 525 vertical lines (625 for PAL). There's no getting around this *standard* without moving into true high-def standards, or IP. I think He was talking about Horizontal Lines 3. There isn't a direct correlation between sampling resolution and "TV Lines", so again, don't get too hung up on it. At most, think of it as weakest-link theory, and if your camera has higher resolution that the video standard supports, then the camera won't be your weakest link for image clarity. Share this post Link to post Share on other sites
SEANHAWG 1 Posted August 22, 2011 Sean, I have ideawhy don't we create CCTV Forum test chart, very simple to use and then everybody can post their results I kinda start to make my self and almost done for basic test Sounds like a good idea. I am currently running a test right now between a few different cameras with different TV line ratings to see if I can notice any differences. I will post results on forum whenever I get them done. What did you have in mind? Share this post Link to post Share on other sites
ak357 0 Posted August 22, 2011 Sounds like a good idea. I am currently running a test right now between a few different cameras with different TV line ratings to see if I can notice any differences. I will post results on forum whenever I get them done. What did you have in mind? For example ( in real life I use "bmp" extention) each line are one pix wide The trick is about positioning camera must see left and right edge of this pix only then u set DVR for CIF or D1 and record for some people results can be shocking This test does not measure its total path performace from camera to playback on DVR Share this post Link to post Share on other sites
SEANHAWG 1 Posted August 22, 2011 Thanks Alex. Excuse my ignorance but what is this test testing? How would I test a camera with that diagram. Do you have an actual physical paper that I could shoot the camera at or should I shoot the camera right at the LCD screen on my computer. Or should I print off that diagram. Or am I missing the point totally. Share this post Link to post Share on other sites
ak357 0 Posted August 22, 2011 Thanks Alex. Excuse my ignorance but what is this test testing? How would I test a camera with that diagram. Do you have an actual physical paper that I could shoot the camera at or should I shoot the camera right at the LCD screen on my computer. Or should I print off that diagram. Or am I missing the point totally. Sorry yes u print and then put at front of camera the way i described record and then playback have a look or print what u recorded and compare with original will try to talk to u on Monday Check PM plz Share this post Link to post Share on other sites
SEANHAWG 1 Posted August 22, 2011 I got you now. Thanks! Share this post Link to post Share on other sites
