IP vs Analog - What your system provider wont tell you

DVR	IP Cameras
1.End to interlace problems
·         Interlaced scan ·         Each image formed from two interlace fields ·         Blurriness from capturing moving objects, even when connected to a DVR	·         Progressive Scan ·         Entire image captured at one time ·         Crystal clear images even with a high degree of motion in the scene
2.Megapixel resolution
Stuck with NTSC/PAL resolution 0.4 Megapixel at 4CIF and 0.1 at CIF Limited image details	Many resolutions 1 Megapixel is 10x the resolution of CIF, 2 Megapixel is 20x! Different aspect ratios Digital PTZ
3.Integrated PTZ  and I/O control and storage
Analog cameras need separate Rs-485 cable and equipment(joystick) for control) Costly and cumbersome I/O only possible in DVR not on camera Recording not possible onboard camera.So if DVR is shut all lost.	PTZ control over the same network that transports the video PTZ commands sent over the IP network Integrated I/O can Trigger anything Can be triggered by anything
4.Audio
Only possible with separate audio lines to the DVR	Audio captured at the camera Synchronized with the video Can be integrated into the same video stream 2-way audio (Duplex, Half Duplex, Simplex)
5.Secure Communication
No encryption	Video encryption Authentication using encrypted certificates Authorization: to verify and approve the identity of the device Privacy watermarks
6.Flexible cost effective infrastructure
Expensive coax, proprietary fiber, wireless Distance affects image quality Adding power, I/O and audio further complicates this situation	·         IP = established, standardized, interoperable ·         Digital images = no quality reduction ·         Many streams transmitted over the same line ·         A single network wire = hundreds of simultaneous full frame rate video streams
7.True Digital Solution
With every conversion image quality is lost: Analog signal digitized in camera’s DSP Analog signal converted back to analog for transport over coax Signal once again digitized at the DVR for recording	Images digitized once Stay digital No unnecessary conversions No image degradation
8.POE
Not Available	Both network cameras with and without built-in support for PoE can take advantage of a UPS device Cost savings Reliability with centralized power backup Simple installation