Grass Valley Profile XP Aug 16 2004 - Manual (Page 164)

Chapter 5 Modifying a Channel: Video Settings
164 Profile XP System Guide 23 July 2004
Defining and selecting a custom video quality preset
You can modify the custom presets provided in both the Video Quality and Browse
Video Quality drop-down lists. Using custom settings, you can more closely manage
signal quality and record capacity by choosing the chrominance sampling method, group
of picture length (GoP), and bit rate best suited for your application.
To modify the settings for a custom video quality preset:
1. Choose Channel Configuration in the Configuration Manager window. The
Channel Configuration dialog box appears.
2. Click the tab for the channel you want to modify. If you want to modify a browse
video setting, click the Browse Video button.
3. Select one of the custom presets in the Video Quality drop-down list.
4. Click the Video Quality Settings button ( ). The MPEG Video Quality Settings
dialog box (on the left) or the MPEG-1 Browse Video Quality Settings dialog box
(on the right) appears.
5. Click and drag the diamond on the grid to change the bit rate and group of pictures
(GoP) settings, and click the button for the desired chrominance sampling (note
that you cannot change the chrominance setting for browse video).
The settings used for the High , Medium , Low , and Draft presets can be used as
reference points when you are making a custom setting.
You can change the preset name while in the dialog box.
6. Click OK when you are finished.
7. Click Finish to save your settings and close the Channel Configuration dialog box.
NOTE: If the channel is currently in use by an application, it must be reacquired
within the application before your changes will take effect. Refer to the User
Manual for the Profile application you are using.