concat_day.ps1

# Substring(7,10) for format like dvgrab-2008.08.08_17-53-10.dv
Get-ChildItem *.dv | Sort Name | Group { $_.BaseName.Substring(7,10) } | % {
    $d=$_.Name
    $_.Group | % { "file '$($_.Name)'" } | Set-Content "$d.txt"
    ffmpeg -f concat -i "$d.txt" -vf bwdif -c:v libx264 -preset slow -crf 22 "$d.mp4"
    if ($LASTEXITCODE -eq 0) { Remove-Item "$d.txt" }
}

concat_dv.ps1

Get-ChildItem *.dv | Sort-Object Name | ForEach-Object { "file '$($_.Name)'" } | Set-Content files.txt
# -vf bwdif to deinterlace, but breaks sometimes
ffmpeg -f concat -i files.txt -c:v libx264 -preset slow -crf 22 concat.mp4

exiftool_date_rename.ps1

exiftool -ext dv "-FileName<DV:DateTimeOriginal" -d "%Y-%m-%d_%H-%M-%S%%-c.%%e" .

ffmpeg_clips.ps1

Get-ChildItem *.dv | % { ffmpeg -i $_.FullName -vf bwdif -c:v libx264 -preset slow -crf 22 "$($_.BaseName).mp4" }