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Remote Desktop Guide

Stream the screen of devices in real-time with LabSync's WebRTC-based remote desktop feature.

Accessing Remote Desktop​

Starting a Session​

  1. Navigate to Devices
  2. Select a Windows device
  3. Click Remote Desktop
  4. Browser will connect and stream video
  5. Connection establishes within 5-10 seconds

Using Remote Desktop​

Mouse and Keyboard Control​

  • Mouse: Move your cursor to control remote screen
  • Click: Left/right mouse buttons work normally
  • Keyboard: Type on your keyboard to input text
  • Special Keys: Ctrl+Alt+Delete (via menu)

Video Quality​

LabSync automatically adapts to your network:

  • High Bandwidth: 1080p@30fps, 5 Mbps
  • Medium Bandwidth: 720p@24fps, 2 Mbps
  • Low Bandwidth: 480p@15fps, 1 Mbps

Automatic quality adjustment ensures smooth viewing.

Display Options​

Fullscreen​

  1. Click Fullscreen button
  2. Browser enters fullscreen mode
  3. Press ESC to exit

Fit to Window​

  1. Click Fit to Window
  2. Video scales to fill browser
  3. Maintains aspect ratio

Performance​

Adjust Settings​

  1. Click Settings during session
  2. Options:
    • Frame Rate: 10-30 fps
    • Bitrate: 1000-10000 kbps
    • Resolution: Auto/720p/1080p

For Slow Networks (5 Mbps):

  • Frame rate: 15 fps
  • Bitrate: 2000 kbps
  • Resolution: 720p

For Fast Networks (50+ Mbps):

  • Frame rate: 30 fps
  • Bitrate: 5000 kbps
  • Resolution: 1080p

GPU Acceleration​

LabSync automatically detects and uses GPU hardware for encoding:

Supported GPUs​

  • NVIDIA: GeForce, Quadro, RTX series (NVENC)
  • AMD: Radeon, EPYC (AMF)
  • Intel: Integrated Graphics, Arc (QSV)
  • Software Fallback: If no GPU detected

Checking GPU Status​

On the remote device:

# Windows - Check NVIDIA GPU
nvidia-smi

# Or check ffmpeg capabilities
ffmpeg -encoders | findstr h264

# Should show: h264 (h264) or h264_nvenc (NVIDIA H.264)

Video Stream Not Starting​

Check 1: Network Connectivity

# From your computer
ping <device-ip>

# From device, check network
ipconfig /all  # Windows
ifconfig      # Linux

Check 2: Firewall

  • Ensure UDP traffic allowed (WebRTC uses UDP)
  • Check Windows Firewall on device
  • Check router firewall

Solutions:

  1. Disable firewall temporarily for testing
  2. Add LabSync to firewall exceptions
  3. Check reverse proxy (if using)

Video Choppy or Stuttering​

Causes:

  • Network congestion
  • Device CPU overloaded
  • Encoding timeout

Solutions:

  1. Reduce frame rate to 15 fps
  2. Reduce bitrate to 2000 kbps
  3. Reduce resolution to 720p
  4. Stop other CPU-intensive tasks on device

Latency Too High (1000+ ms)​

Check:

  • Internet latency: ping 8.8.8.8
  • Distance to server (ideally <1100 ms)
  • Network packet loss

Solutions:

  1. Use device closer to server
  2. Use wired connection instead of WiFi
  3. Reduce video quality settings

GPU Encoding Not Working​

# Windows - Check ffmpeg has GPU support
ffmpeg -encoders | findstr nvenc

# If no results, GPU drivers may be missing
# Update GPU drivers:
# NVIDIA: https://www.nvidia.com/Download/driverDetails.aspx
# AMD: https://www.amd.com/en/support
# Intel: https://www.intel.com/content/www/us/en/support/detect.html

Connection Drops Frequently​

Causes:

  • Unstable network
  • Firewall blocking WebRTC
  • NAT traversal issues

Solutions:

  1. Check STUN server configuration (server-side)
  2. Use wired connection
  3. Test on same LAN to isolate network issues
  4. Check for packet loss: ping -c 100 8.8.8.8

Network Requirements​

Minimum Requirements​

  • Uplink: 1 Mbps
  • Latency: <1200 ms recommended
  • Connection: Either TCP or UDP functional
  • Uplink: 5+ Mbps
  • Latency: <1100 ms
  • Stability: <15% packet loss

Bandwidth Calculator​

Estimate bandwidth per stream:

  • 480p @ 15 fps: ~1 Mbps
  • 720p @ 24 fps: ~2 Mbps
  • 720p @ 30 fps: ~3 Mbps
  • 1080p @ 30 fps: ~5 Mbps

Next: Learn about SSH Terminal or Scheduling