- ffmpeg
- ImageMagick
- ghostscript
To install them on macOS, type:
brew install ghostscript imagemagick ffmpeg
curl -O https://raw.githubusercontent.com/receyuki/Preview-Thumbnails-Maker/master/previewThumbnails.sh
chmod +x ./previewThumbnails.sh
./previewThumbnails.sh yourVideoFile.mp4
cd ~/Downloads && curl -LO https://github.com/receyuki/Preview-Thumbnails-Maker/raw/master/automatorQuickAction/MakePreviewThumbnails.workflow.zip && unzip ./MakePreviewThumbnails.workflow.zip && rm MakePreviewThumbnails.workflow.zip && open ./MakePreviewThumbnails.workflow