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I-Frame intervals settings - IP Megapixel Cameras and Software . . . When running 20fps, that means one I-frame every 1 2 seconds So to save space, you would have to raise, not lower, that setting But a lot depends on the capabilities of the encoder Changing I-frame intervals can affect the size of the P-frames and actually result in higher bitrates and or lower picture quality My suggestion is to experiment
Intra Frame Period - General Digital Discussion - CCTVForum. com Posted April 8, 2013 That really depends on what you are looking at with the camera Pretty much means that it sends an I-frame (entire image) every 1 4, 1 2, 1, 2, 3 or 4 seconds A general rule of thumb is the lower that number, the better the image but the higher the bandwidth and storage costs For fairly low activity scene a higher rate
HikVision FPS vs i-Frame vs Disk Station performance It explains that I-frames: Also known as key frames I-frames are completely self-referential and don't use information from any other frames These are the largest frames of the three, and the highest-quality, but the least efficient from a compression perspective P-frames: P-frames are "predicted" frames
Frame vs CIF - Digital Video Recorders - CCTVForum. com Frame, in this context, is abbreviated from 'Full Frame' and is the higher resolution setting, equivalent to 4CIF It will offer you a higher picture quality from each camera, but at the sacrifice of hard drive space and or recording frame rate (also referred to as IPS Images Per Second by some developers in China)
H264 Keyframe intervals - CCTVForum. com Then every frame is a key frame and you don't have to worry about this anymore Bandwidth is not an issue but every little bit helps on storage capacity Just playing with a server that had twelve 4 channel Jpeg encoders, a hand full of 5mp jpeg 2000 cameras, (6) 2mp h264 cameras, and (10) h264 1mp cameras I cut the bandwith down from 190Mbps
Hikvision skipping frames when playing back recordings For the reference frame by four, every 4th frame is to be used as a reference frame for encoding 1,2,3, and 4th frames Then only 4 th frames need to be decoded and reconstructed, skipping 1,2,3rd frames at the NVR side Thus 8 and 16 fast forwarding can be achieved without clocking much faster
Detect Video for any frame drop or lag without watching it Objective of the video capture is to knew during video recording any frame drop or lag After finish video record example at 1min 35 sec , visually, we can spot frame drop loss skip video was not as smooth Eg Below shown frame loss during pendulum returning back, can i check if your software able to detect this similar issue by
Shutter speed AND frame rate - Test Bench - CCTVForum. com Posted January 20, 2010 bike_rider said: Yes, if your exposure is 1 20 of a second, then you can't get more than 20 fps That rarely is a problem because everything would be blurry at that speed, so I can't imagine anyone wanting that exposure for CCTV Some CCTV cameras offer slow shutter speed called Sens-up
iFrame Interval: Only With Variable-Rate? - CCTVForum. com To answer your questions about i-frame interval in CBR, you have to understand that when a camera sends an i-frame, the bit rate will spike because this frame is a lot larger than p-frames As the interval between i-frames becomes bigger and bigger, it's harder to maintain a constant bit rate because the spikes are further and further apart
Hikvision Chinese Cam - No NTSC 30 fps? I see 25fps max Just purchased a Chinese Hikvision DS-2CD2332-I from Wrightwood, and can't see anywhere to "tell" the camera to not be PAL I realize that NTSC PAL aren't that relevant in the progressive scan digital age, but it is limiting my frame-rate to 25fps in any resolution Also, the 15fps that should be attainable in the 3mp resolution is only 12 5