ffmpeg-simple-converter

A simple CLI to convert audio and video files using ffmpeg, featuring:

• file selector (checkbox)
• ready-to-use presets (dynamic based on file type)
• runs the command and streams output to the terminal

Requirements

• Node.js >= 16
• ffmpeg installed and available in your PATH

Quick check:

ffmpeg -version

Usage

Via npx (from any folder)

npx ffmpeg-simple-converter

This opens a selector to pick files from the current folder and then choose the appropriate preset.

Run locally (in this repo)

npm install
npm run convert

Supported types

The script only lists and allows selecting files with supported extensions.

• Audio: .ogg, .wav, .mp3, .m4a, .aac, .flac
• Video: .mp4, .mov, .mkv, .webm, .avi

Available presets

Presets are built dynamically based on the detected type (audio or video). If you select mixed files (audio + video), the script will ask for one preset per type.

Audio → MP3 (good quality)

ffmpeg -hide_banner -n -i input.ogg -c:a libmp3lame -q:a 2 output.mp3

Audio → MP3 (smaller)

ffmpeg -hide_banner -n -i input.ogg -c:a libmp3lame -q:a 5 output.mp3

Video → MP4 1080p (reasonable/smaller)

ffmpeg -hide_banner -n -i input.mp4 \
	-vf "scale='min(1080,iw)':-2" \
	-c:v libx264 -profile:v baseline -level 3.1 \
	-preset medium -crf 28 -r 30 \
	-c:a aac -b:a 128k \
	-movflags +faststart \
	output.mp4

Video → MP4 1080p (better/larger)

ffmpeg -hide_banner -n -i input.mp4 \
	-vf "scale='min(1080,iw)':-2" \
	-c:v libx264 -profile:v baseline -level 3.1 \
	-preset slow -crf 23 -r 30 \
	-c:a aac -b:a 128k \
	-movflags +faststart \
	output.mp4

Notes

• The script uses -n (do not overwrite). If the output name already exists, it generates an alternative name with a suffix.
• If the output extension matches the input extension (e.g. .mp3 → .mp3), the script uses a _converted suffix to avoid collisions.