You can adjust the image quality of your remote desktop display to improve the user experience. Improving image quality is helpful in maintaining a consistent user experience when network connection is less than optimal.
Video Encoders Used for Desktop Sessions
The video encoder used for a desktop session depends on the capabilities of both the desktop and client systems. When a user opens a session, Horizon evaluates the hardware and software capabilities of the desktop and client and selects the highest-priority encoder that is supported by both.
For example, Horizon uses HEVC if all the following components are configured to support or allow HEVC:
- The Linux desktop system
- Horizon Agent on the Linux desktop
- The client system
- Horizon Client on the client system
If any one of the components does not support HEVC, Horizon selects the next encoder on the priority list that is supported by all the components.
For a session that uses vGPU technology, Horizon selects from the following encoders listed in order of priority:
- HEVC YUV 4:4:4
- H.264 YUV 4:4:4
- HEVC
- H.264
- Switch Encoder
- BlastCodec
For a non-vGPU session, Horizon selects from the following priority list of encoders:
- Switch Encoder
- H.264
- BlastCodec
Example VMware Blast Extreme Protocol Settings
VMwareBlastServer and its related plug-ins use the configuration file /etc/vmware/config.
| Option name | Parameter | High-speed LAN | LAN | Dedicated WAN | Broadband WAN | Low-speed WAN | Extremely Low speed |
|---|---|---|---|---|---|---|---|
| Bandwidth settings | RemoteDisplay.maxBandwidthKbps | 1000000 (1 Gbps) | 1000000 (1 Gbps) | 1000000 (1 Gbps) | 5000 (5 Mbps) | 2000 (2 Mbps) | 1000 (1 Mbps) |
| Max FPS | RemoteDisplay.maxFPS | 60 | 30 | 30 | 20 | 15 | 5 |
| Audio Playback | RemoteDisplay.allowAudio | TRUE | TRUE | TRUE | TRUE | TRUE | FALSE |
| Display Quality (JPEG/PNG) | RemoteDisplay.maxQualityJPEG | 90 | 90 | 90 | 70 | 60 | 50 |
| Display Quality (JPEG/PNG) | RemoteDisplay.midQualityJPEG | 35 | 35 | 35 | 35 | 35 | 35 |
| Display Quality (JPEG/PNG) | RemoteDisplay.minQualityJPEG | 25 | 25 | 25 | 20 | 20 | 20 |
| Display Quality (H.264 or HEVC) | RemoteDisplay.qpmaxH264 | 28 | 36 | 36 | 36 | 36 | 42 |
| Display Quality (H.264 or HEVC) | RemoteDisplay.qpminH264 | 10 | 10 | 10 | 10 | 10 | 10 |
