JPEG
| B Quality/Size | For specifying the rate control mode and target file size for JPEG. | |
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| When AVFS1B to AVFS7B is selected, the quantization table during JPEG | |
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| encoding will be maintained and the file size will increase/decrease | |
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| according to the input signals. Stipulated values will be displayed in the Size | |
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| field. When recording JPEG data to a recorder with a limited storage | |
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| capacity, note that the maximum recording time may vary as the file size | |
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| fluctuates under this setting. | |
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| When AAFSB is selected, encoding is performed such that the target file size | |
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| is the average size of multiple JPEG images. You can enter the target size in | |
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| the [Size] field. | |
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| [Size field setting range for VGA: 10KB to 100KB (Only when setting AAFSB)] | |
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| [Size field setting range for QVGA: 3KB to 33KB (Only when setting | |
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| AAFSB)] |
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MPEG4 |
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| C Bitrate | For setting the MPEG4 encoding bit rate. | |
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| [Setting range:64kbps to 8000kbps] | |
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| D Bitrate Control | For selecting whether to set the MPEG4 rate control mode to CBR (Constant | |
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| Bit Rate) or VBR (Variable Bit Rate). | |
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| CBR | : Encoding is performed at a fixed bit rate regardless of the |
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| condition of the input video signals. Enables easy forecast of the |
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| bit rate. |
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| VBR | : Changes the bit rate according to the condition of the input |
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| video signals. Picture quality is stable, but forecast of the bit rate |
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| is difficult. |
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| E FPS | For setting the MPEG4 frame rate. | |
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| [Setting range:1 fps, 7.5 fps, 10 fps, 15 fps, 25 fps, 30 fps] | |
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| F I Frame Interval | For setting the | |
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| Shortening the interval stabilizes the picture quality even when there are | |
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| rapid changes in the video image. However, the picture quality for images | |
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| with little change will deteriorate. In addition, when multicast packet loss | |
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| occurs, the time interval required to restore the image is shorter. | |
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| [Setting value:30, 60, 90, 120, 150] | |
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| G Priority | For selecting whether to assign priority to the frame rate or picture quality | |
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| during MPEG4 encoding. | |
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| FPS | : Assigns priority to frame rate. Select this setting to enable |
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| smooth monitoring of motion images. |
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| Quality | : Prioritizes image quality. |
Memo:
●Valid when [Bitrate Control] D is ACBRB. When a very small bit rate is set for the frame rate or frame size, ACBRB or AVBRB will become the lowest images and a difference will appear in the frame rate. AQualityB which skips frames will be able to realize small bit rates better than AFPSB.
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