Logic 3 V5.00 Manual Do Utilizador

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Use B Frame 
Uses bi-directional frames to decrease the file size of recorded footage 
 
Caution: This is a CPU intensive setting. 
2.1.2.2 
MPEG4 CODEC Settings 
To switch the recording CODEC to MPEG4, select the “MPEG4” option from the CODEC drop-down box. 
 
 
 
Keyframe Rates 
Sets the number of keyframes recorded per second.  The higher the value, the greater 
the data space needed for recording, but the higher the quality of the video. 
Motion Search 
Scope 
Changes the size of the regions used to detect motion. 
Quantization 
Method 
Selects the type of compression.  H263 offers higher compression than MPEG4 but 
requires more CPU usage. 
ME Accuracy 
Motion estimation accuracy.  Full pixel checks for motion comparing differences of full 
pixels.  Half pixel will check for motion using an interpolation method.  Although half 
pixel will detect finer movements, it is also very CPU intensive. 
ME Algorithm 
Changes the shape of the area used for motion detection.  Fast search will save CPU time 
but full search is more accurate. 
ME Vectors 
Sets the number of vectors tested for motion from 1 to 4. The greater the number, the 
more CPU processing is required. 
2.1.2.3 
H.264 CODEC Settings 
Depending on your DVR model, it may use H264 recording.  This cannot be changed to another codec and 
has slightly different customization options. 
 
 
 
Variable Bit 
Rate 
The default setting of variable bit rate allows the encoder to change its recording bit rate 
automatically as required.  This option offers the best trade off of file size and visual 
quality. 
Restrict 
Maximum Bit 
Rate 
This sets a hard limit on the maximum quality that can be recorded.  Options are Low, 
Medium, High, and Super-high. 
Constant Bit 
Rate 
Instead of a variable bit rate, this option will make it constant.  A setting of constant, 
super-high bit rate will provide the maximum video quality settings, at the expense of 
storage space. 
3xLogic Vigil System Server Software - User’s Guide    Doc# 08100610 Page 
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