VGADVI Recorder Pro User Guide
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In addition to fine tuning channel settings such as frame rate, resolution and bit rate to ensure optimal use of resources while streaming a quality video, there may be circumstance when you must fine tune the video input source.
Changing how source images are displayed may cause undesired results, for example experimenting with the PLL setting may result in the image not being displayed properly. It is a good practice to backup your configuration settings so that you can revert back to a good configuration if the changes that you made are not desirable. See Configuration presets.