Session Recording

Enable or disable lossy video codec

Lossy video codec lets you adjust compression options to reduce the size of recording files and to accelerate navigating recorded sessions during playback. Lossy video codec is suitable for use when:

  • the size of recording files per time unit is too large, or
  • there is a lag while you fast forward or rewind during recording playback.

To enable the lossy video codec feature, open the Lossy Video tab of Session Recording Agent Properties and adjust the compression options to your needs. We recommend you use the default values unless there is a practical need to change the values.

Lossy video codec

For a description of compression options, see the following table:

Compression option Description Default value Remarks
Video fluency (FPS) Low: 1, Medium: 10, High: 20 Low N/A
Video image quality Low: minCrf:33 maxCrf:45, Medium: minCrf:25 maxCrf:37, High: minCrf:18 maxCrf:30 Low N/A
I-Frame interval (seconds) 60, 120, 300, 600, 1200, 1800, 3600 600 The larger the I-Frame interval value, the smaller the storage space occupied by the compressed video. The smaller the I-Frame interval value, the better the seeking experience (fast forward and rewind).
Image resolution scaling 1, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4 1 You can downscale the resolution of recorded screens to a percentage, for example, 0.9 means 90%. If you don’t want to change the resolution, use the default value, 1.
Cursor refresh rate (times per second) Low: 3, Medium: 5, High: 10 Low N/A

You can also set image resolution scaling by editing Registry. To do so, complete the following steps:

Warning:

Editing the registry incorrectly can cause serious problems that might require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of the Registry Editor can be solved. Use Registry Editor at your own risk. Be sure to back up the registry before you edit it.

  1. Browse to HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\SmartAuditor\Agent\ SRGraphicsZoomFactor.
  2. Set a value data that suits your needs. For the optional values, see the preceding table.
Enable or disable lossy video codec