thekuai 0 Posted May 28, 2012 I live is the US. Obviously the official video system is ntsc. Will switching to pal benefit me because the lower framerate will help with bandwidth and storage? This also means i can lower the shutter rate to 1/25 to capture more light at night. Is it worth it? Share this post Link to post Share on other sites
Soundy 1 Posted May 28, 2012 Will switching to pal benefit me because the lower framerate will help with bandwidth and storage? No, because a PAL frame also has greater vertical resolution (625 lines vs. 525). Since almost all DVRs give you the ability to set different *recording* frame rates per camera, and much lower than 25fps, this would be pointless anyway. This also means i can lower the shutter rate to 1/25 to capture more light at night. There's no correlation between shutter speed and recording framerate. None. You could set your DVR to record at 7fps and your camera's shutter speed (IF it allows you to adjust it) to anything from 1/10s to 1/10,000s. You could record at 30fps and have one camera's shutter at 1/1000s, another camera's shutter at 1/6s. One has no effect on the other. All that aside, IF you switched your DVR to PAL, you would also have to use PAL-compatible cameras. Share this post Link to post Share on other sites
thekuai 0 Posted May 28, 2012 Maybe it was important to mention that im using megapixel ip cameras specifically an axis p3346, rainbow ipv1v3, panasonic wv-nw502s. Most dont have options for framerate except the panny. Im also using geovision and when using h264 there is no option to change framerate Share this post Link to post Share on other sites
Soundy 1 Posted May 28, 2012 Maybe it was important to mention that im using megapixel ip cameras Yeah, that kinda makes a difference... since NTSC and PAL are analog baseband video standards and have no relevance whatsoever to IP cameras. specifically an axis p3346, rainbow ipv1v3, panasonic wv-nw502s. Most dont have options for framerate except the panny. You would normally set the recording framerate in the NVR, not the camera. Im also using geovision and when using h264 there is no option to change framerate Using Geovision as your NVR? Or using analog cameras on it as well? I guarantee you GeoVision has the option to select analog recording framerates on a per-camera basis. Share this post Link to post Share on other sites
thekuai 0 Posted May 28, 2012 Im using geovision as a hybrid solution, but my concern is mainly for the ip cameras. I have all ip cameras set to record at max framerate on h264 on the nvr. The problem occurs when i try to save a file in the viewlog as an avi. When i try to playback the avi in windows media player it plays at less than half speed. I was told wmp will play at 25/30 fps only even if the file is not. This problem occurs when i save it in geo h264 or wmv9 format. All camera settings are set to 30 fps. On the camera with audio the audio plays back in real time but the video is at less than half. When playing back in viewlog both video and audio play back in real time. When selecting the backup option it also plays back in real time. Its only when i save as avi and play in wmp Share this post Link to post Share on other sites
