mmodrow’s gists

mmodrow / Remove-ExitRotationFlags.ps1

Created January 9, 2026 21:46

Removes Metadata (Exit) Rotation from jpeg files using exiftool

gci *.jp*g | ForEach-Object{ & '..\exiftool-13.45_32\exiftool().exe' -Orientation=1 -n $_.FullName}

mmodrow / Rotate-ImagesInPlace.ps1

Created January 9, 2026 21:45

Rotates images in Place using image magick

gci *.jp*g | ForEach-Object{ magick mogrify -rotate 90 $_.FullName}

mmodrow / find-duplicates.ps1

Created January 8, 2026 14:19

Identify files with duplicate content and remove all but one (or perform some other action on the dupe sets)

	$groupedDuplicates = Get-ChildItem -Recurse -File `
	\| Group-Object -Property Length `
	\| Where-Object { $_.Count -gt 1 } `
	\| ForEach-Object { $_.Group } `
	\| Get-FileHash `
	\| Group-Object -Property Hash `
	\| Where-Object { $_.Count -gt 1 } `
	\| ForEach-Object { $_.Group } `
	\| Group-Object -Property hash

mmodrow / list_dangling_git_commits.sh

Created November 5, 2025 16:26

git fsck --lost-found | grep "^dangling commit" | sed "s/^dangling commit //g" | xargs git show -s --oneline

mmodrow / Set-GitCommitDate.ps1

Last active June 13, 2025 19:01

Manually set current git commit date

	[CmdletBinding()]
	param (
	[Parameter(Mandatory)]
	[datetime]
	$dateTime
	)
	$dateString = $dateTime.ToString("yyyy-MM-ddTHH:mm:ss")
	git commit --amend --date=$dateString --no-edit --reset-author

mmodrow / Remove-Trailing5Seconds.ps1

Created April 24, 2024 04:43

Removes the last 5 seconds from all mp4 files in the directory using ffmpeg and stores them in an adjacent directory.

-$videos = Get-ChildItem *.mp4
-foreach ($video in $videos) {
-    $duration = [float](ffprobe -i $video.fullName -show_entries format=duration -v quiet -of csv="p=0")
-    ffmpeg -i $video.fullName -ss 0 -to ($duration - 5) (Join-Path "..\trimmed" ($video.name))
-}

mmodrow / ConvertTo-SilentVideo.ps1

Last active March 26, 2024 19:55

Use FFMpeg to strip (unusable) Audio from video files

	$videos = @(Get-ChildItem *.avi \| Where-Object { -not $_.name.contains("_h264") -and -not $_.name.contains("_noAudio") })

	$total = $videos.count
	$current = 1
	foreach ($video in $videos) {
	$silentVideoName = $video.basename + "_noAudio_h264.mp4"
	Write-Progress -Status "Stripping Audio and recoding video to h.264." -PercentComplete ($current / $total * 100) -Activity "Writing file $current of $total."
	if ( -not (Test-Path $silentVideoName )) {
	Write-Host ("Converting " + $silentVideo.name + " to " + $silentVideoName + ".")
	ffmpeg -i $video.name -an -c:v libx264 -hide_banner -v warning $silentVideoName

mmodrow / Remove-SilentVideoWithStatic.ps

Created March 26, 2024 17:56

Remove Video that had no (proper) audio and was stripped by ConvertTo-SilentVideo.ps1

-$silentVideos = Get-ChildItem *.mp4 -Include @("*_noAudio*", "*_h264*") | Where-Object { $_.length -gt 0 }
-foreach ($silentVideo in $silentVideos) {
-    $silentVideoName = ($silentVideo.basename.replace("_noAudio", "").replace("_h264", "")) + ".avi"
-    if (Test-Path($silentVideoName)) {
-        Write-Host ( "removing " + $silentVideoName)
-        Remove-Item $silentVideoName
-    }
-}

mmodrow / Export-DenormalizedTrelloCardData.ps1

Created March 14, 2024 06:52

Transform a single card from a Trello Board Export to denormalized JSON

	[CmdletBinding()]
	param (
	[string]
	$jsonImportPath,
	[string]
	$jsonExportPath,
	[string]
	$cardName
	)
	$trelloData = Get-Content $jsonImportPath -Encoding UTF8 \| ConvertFrom-Json

mmodrow / ConvertTo-Rtttl.ps1

Last active February 9, 2024 05:34

MIDI->RTTTL converter for BLHeli_32 and BlueJay Quadcopter ESCs

Marc A. Modrow mmodrow