How to stream current desktop screen without including windows taskbar using ffmpeg?

Posted on by Habibie

To stream your current desktop screen without including the Windows taskbar using FFmpeg, you need to:

  1. Determine your screen dimensions (excluding the taskbar).
  2. Use the gdigrab input device in FFmpeg.
  3. Crop the capture area to exclude the taskbar.

Example Command:

ffmpeg -f gdigrab -framerate 30 -offset_x 0 -offset_y 0 -video_size 1920x1010 -i desktop -f flv rtmp://your-stream-url

Explanation:

  • -f gdigrab → Use Windows screen capture.
  • -framerate 30 → Set frame rate to 30 FPS (adjust as needed).
  • -offset_x 0 -offset_y 0 → Start capturing from the top-left corner (you can adjust this if needed).
  • -video_size 1920x1010 → Adjust this to match your screen resolution minus the taskbar height (usually 40px or 70px, depending on settings).
  • -i desktop → Capture the full desktop.
  • -f flv rtmp://your-stream-url → Stream to an RTMP server.

How to Determine Correct video_size:

  1. Find your screen resolution (1920x1080, 2560x1440, etc.).
  2. Subtract the taskbar height (usually ~40px in default mode, ~70px in larger mode).
  3. Example:
    • 1080p screen (1920×1080) → 1920x1040 (if taskbar height is 40px)
    • 1440p screen (2560×1440) → 2560x1400
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