Kimau · September 13, 2025 13:07 · Kimau · Sep 13, 2025
diff --git a/screencap.ps1 b/screencap.ps1
 # Script to capture a screen region using mouse clicks to define the area.
 # To stop the recording, return to this PowerShell window and press 'q'.

 # Add the necessary assembly to get cursor position.
 Add-Type -AssemblyName System.Windows.Forms

 # --- Step 1: Capture the coordinates of the top-left corner (Point A) ---
 Write-Host "Please position your mouse cursor at the TOP-LEFT corner of the region you want to capture."
 Write-Host "Then press any key to record the coordinates..."

 # Wait for a key press to capture the coordinates
 $null = [System.Console]::ReadKey($true)
 $pointA = [System.Windows.Forms.Cursor]::Position

 Write-Host "Top-left coordinates captured: X=$($pointA.X), Y=$($pointA.Y)"

 # --- Step 2: Capture the coordinates of the bottom-right corner (Point B) ---
 Write-Host "Now, position your mouse cursor at the BOTTOM-RIGHT corner of the region you want to capture."
 Write-Host "Then press any key to record the coordinates..."

 # Wait for a key press to capture the coordinates
 $null = [System.Console]::ReadKey($true)
 $pointB = [System.Windows.Forms.Cursor]::Position

 Write-Host "Bottom-right coordinates captured: X=$($pointB.X), Y=$($pointB.Y)"

 # --- Step 3: Calculate the video size and offsets ---
 # Ensure the coordinates are in the correct order for calculation (top-left vs bottom-right).
 $offset_x = [Math]::Min($pointA.X, $pointB.X)
 $offset_y = [Math]::Min($pointA.Y, $pointB.Y)

 # Calculate width and height. Use absolute values to handle clicks in any order.
 $width = [Math]::Abs($pointA.X - $pointB.X)
 $height = [Math]::Abs($pointA.Y - $pointB.Y)

 # Check for valid dimensions to prevent ffmpeg errors
 if ($width -le 0 -or $height -le 0) {
    Write-Host "`nError: Invalid region selected. Please ensure your two clicks define a valid area with a width and height greater than zero."
    Write-Host "Press any key to exit the script."
    $null = [System.Console]::ReadKey($true)
    exit
 }

 $video_size = "$($width)x$($height)"

 Write-Host "`nCalculated Capture Region:`nOffset X: $offset_x`nOffset Y: $offset_y`nVideo Size: $video_size"

 # --- Step 4: Construct and run the ffmpeg command ---
 Write-Host "`nStarting ffmpeg recording..."
 Write-Host "To stop the recording, go to this PowerShell window and press 'q'."

 # Define the output file name with a timestamp to avoid overwrites
 $timestamp = Get-Date -Format "yyyyMMdd_HHmmss"
 $output_file = "screen_capture_$timestamp.mkv"

 # Construct the full command arguments as an array to ensure they are passed correctly.
 $ffmpeg_arguments = @(
    "-f", "gdigrab",
    "-framerate", "30",
    "-offset_x", "$offset_x",
    "-offset_y", "$offset_y",
    "-video_size", "$video_size",
    "-i", "desktop",
    "`"$output_file`""
 )

 # Use the splatting operator (@) to pass the arguments correctly.
 # This will run in the foreground and block the script until you press 'q' to stop the recording.
 ffmpeg.exe @ffmpeg_arguments

 Write-Host "`nRecording session finished. File saved to: $output_file`n"
 Write-Host "Press any key to exit the script."
 $null = [System.Console]::ReadKey($true)
	# Script to capture a screen region using mouse clicks to define the area.
	# To stop the recording, return to this PowerShell window and press 'q'.

	# Add the necessary assembly to get cursor position.
	Add-Type -AssemblyName System.Windows.Forms

	# --- Step 1: Capture the coordinates of the top-left corner (Point A) ---
	Write-Host "Please position your mouse cursor at the TOP-LEFT corner of the region you want to capture."
	Write-Host "Then press any key to record the coordinates..."

	# Wait for a key press to capture the coordinates
	$null = [System.Console]::ReadKey($true)
	$pointA = [System.Windows.Forms.Cursor]::Position

	Write-Host "Top-left coordinates captured: X=$($pointA.X), Y=$($pointA.Y)"

	# --- Step 2: Capture the coordinates of the bottom-right corner (Point B) ---
	Write-Host "Now, position your mouse cursor at the BOTTOM-RIGHT corner of the region you want to capture."
	Write-Host "Then press any key to record the coordinates..."

	# Wait for a key press to capture the coordinates
	$null = [System.Console]::ReadKey($true)
	$pointB = [System.Windows.Forms.Cursor]::Position

	Write-Host "Bottom-right coordinates captured: X=$($pointB.X), Y=$($pointB.Y)"

	# --- Step 3: Calculate the video size and offsets ---
	# Ensure the coordinates are in the correct order for calculation (top-left vs bottom-right).
	$offset_x = [Math]::Min($pointA.X, $pointB.X)
	$offset_y = [Math]::Min($pointA.Y, $pointB.Y)

	# Calculate width and height. Use absolute values to handle clicks in any order.
	$width = [Math]::Abs($pointA.X - $pointB.X)
	$height = [Math]::Abs($pointA.Y - $pointB.Y)

	# Check for valid dimensions to prevent ffmpeg errors
	if ($width -le 0 -or $height -le 0) {
	Write-Host "`nError: Invalid region selected. Please ensure your two clicks define a valid area with a width and height greater than zero."
	Write-Host "Press any key to exit the script."
	$null = [System.Console]::ReadKey($true)
	exit
	}

	$video_size = "$($width)x$($height)"

	Write-Host "`nCalculated Capture Region:`nOffset X: $offset_x`nOffset Y: $offset_y`nVideo Size: $video_size"

	# --- Step 4: Construct and run the ffmpeg command ---
	Write-Host "`nStarting ffmpeg recording..."
	Write-Host "To stop the recording, go to this PowerShell window and press 'q'."

	# Define the output file name with a timestamp to avoid overwrites
	$timestamp = Get-Date -Format "yyyyMMdd_HHmmss"
	$output_file = "screen_capture_$timestamp.mkv"

	# Construct the full command arguments as an array to ensure they are passed correctly.
	$ffmpeg_arguments = @(
	"-f", "gdigrab",
	"-framerate", "30",
	"-offset_x", "$offset_x",
	"-offset_y", "$offset_y",
	"-video_size", "$video_size",
	"-i", "desktop",
	"`"$output_file`""
	)

	# Use the splatting operator (@) to pass the arguments correctly.
	# This will run in the foreground and block the script until you press 'q' to stop the recording.
	ffmpeg.exe @ffmpeg_arguments

	Write-Host "`nRecording session finished. File saved to: $output_file`n"
	Write-Host "Press any key to exit the script."
	$null = [System.Console]::ReadKey($true)