Samsung SNB-5000 User Manual - Page 71
To add a video profile, What is GOP size?
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M SETUP SCREEN To add a video profile You can add as many codec as necessary so that a variety of profiles can be applied according to the recording condition. 1. Select a profile number. 2. Provide the name and select a codec. 3. Specify the conditions under which the codec will be applied. 4. Specify the details of the selected codec including resolution and frame rate. y Resolution : Set the video size of the MPEG4, H.264, and MJPEG files. y Framerate : Specify the frame rate. y Compression : Specify the compression rate of the video. y Bitrate control : You can select either the fixed bit rate or the variable one for the compression type. If you set the resolution to 1280X1024, the maximum frame rate is 22 fps. y Target bitrate : Specify the bit rate at which you will transfer the video. y Encoding priority : You can set the video transfer method to Framerate or Compression. y GOP size : Select a GOP size between 1 and 15. y Profile : The H.264 profiling method is fixed to . y Entropy coding : Reduce the possible compression loss due to encoding. y Multicast (VNP) : Specify the use of the VNP protocol. - IPv4 : Enter an IPv4 address with which you can connect to the IPv4 network. - Port : Specify the video communication port. - TTL : Set the TTL for the VNP packet. y Multicast (RTP) : Specify the use of the RTP protocol. - IPv4 : Enter an IPv4 address with which you can connect to the IPv4 network. - Port : Specify the video communication port. - TTL : You can set the TTL for the RTP packet. What is GOP size? GOP (Group of Pictures) is a set of video frames for MPEG4 and H.264 format compression, indicating a collection of frames from the initial I-Frame (key frame) to the next I-Frame. GOP consists of 2 kinds of frames: I-Frame and P-Frame. I-Frame is the basic frame for the compression, also known as Key Frame, which contains one complete image data. P-Frame contains only the data that has changed from the preceding I-Frame. You can set between 1 and 15 for the MPEG4 and H.264 CODEC. English _71