Grass Valley PROFILE FAMILY v.2.5 - Manual (Page 168)

Chapter 4 Using VdrPanel
168 Profile Family
Setting Compression Presets
The Profile Options dialog box lets you select a video compression preset and
edit the preset values.
1. Click the desired compression preset. The options range from highest
quality, which uses the most disk space and records less material, to the
lowest quality, which uses much less disk space and records more material.
A custom setting is also available.
2. Edit the preset values. Refer to Table 8 for the JPEG factory-set preset values
and to Table 9 for the MPEG values. To change the values, click Edit
Presets to open the Edit Compression Presets dialog box shown in Figure
82. You can change the values of the presets, if desired. Select the preset in
the
Preset Name box, change the values under JPEG or MPEG , and then
click OK .
Table 8. Factory set values for JPEG compression presets
Preset Name
525/60 Standard 625/50 Standard
Min
Lum Q
Max
Chroma Q
Bytes/Field Min
Lum Q
Max
Chroma Q
Bytes/Field
Highest quality 0.75 60.00 100000 0.75 100.00 120000
Best compromise 0.75 60.00 75000 0.75 100.00 90000
Most recording time 0.75 60.00 50000 0.75 100.00 60000
Custom setting 5.00 5.00 5.00 5.00