twobob · October 22, 2025 17:04 · Oct 22, 2025
diff --git a/normaliseVideo.ps1 b/normaliseVideo.ps1
@@ -0,0 +1,56 @@
+# --- Configuration ---
+$inputFile  = "C:\Users\new\Videos\someVideo.mp4"
+$outputFile = "C:\Users\new\Videos\someVideoNormalised.mp4"
+
+# --- Target Loudness ---
+$target_I   = "-14"
+$target_LRA = "7"
+$target_TP  = "-1.5"
+
+Write-Host "Running Pass 1 (analysis)..." -ForegroundColor Yellow
+
+# Build filter safely (join with ':')
+$filter1 = @(
+    "loudnorm=I=$target_I"
+    "LRA=$target_LRA"
+    "TP=$target_TP"
+    "print_format=json"
+) -join ':'
+
+# Run ffmpeg pass 1 (use call operator '&' with argument tokens)
+$ffmpegOutput = & ffmpeg -hide_banner -i $inputFile -af $filter1 -f null NUL 2>&1
+
+# Extract JSON block
+$jsonMatch = [regex]::Match($ffmpegOutput, '(?s)\{.*\}')
+if (-not $jsonMatch.Success) {
+    Write-Host $ffmpegOutput
+    throw "No JSON stats found."
+}
+
+# Parse JSON
+$stats = $jsonMatch.Value | ConvertFrom-Json
+Write-Host ("Measured I  : {0}" -f $stats.input_i)
+Write-Host ("Measured TP : {0}" -f $stats.input_tp)
+Write-Host ("Measured LRA: {0}" -f $stats.input_lra)
+
+Write-Host "Running Pass 2 (normalising)..." -ForegroundColor Yellow
+
+# Build second-pass filter safely (no concatenation-before-colon issues)
+$filter2 = @(
+    "loudnorm=I=$target_I"
+    "LRA=$target_LRA"
+    "TP=$target_TP"
+    ("measured_I={0}" -f $stats.input_i)
+    ("measured_TP={0}" -f $stats.input_tp)
+    ("measured_LRA={0}" -f $stats.input_lra)
+    ("measured_thresh={0}" -f $stats.input_thresh)
+    ("offset={0}" -f $stats.target_offset)
+) -join ':'
+
+# Run ffmpeg pass 2
+& ffmpeg -hide_banner -i $inputFile -af $filter2 -c:v copy -c:a aac -y $outputFile
+if ($LASTEXITCODE -ne 0) {
+    throw "FFmpeg Pass 2 failed."
+}
+
+Write-Host "Done. Normalised file saved to: $outputFile" -ForegroundColor Green