aac-converter

Small script to detect AAC audio in video files and transcode the audio stream to LPCM (pcm_s16le) while copying the video stream. Useful for editing in tools that don't support AAC audio (e.g. DaVinci Resolve on some Linux setups).

Files

• convert.sh — main script. Run with -h to see usage.
• converter_gui.py — GUI wrapper for the converter script using tkinter.

Usage

GUI Mode (Recommended for beginners)

Simply run the GUI application:

python3 converter_gui.py

The graphical interface allows you to:

• Browse and select input/output directories
• Choose audio codec and output format from dropdowns
• Configure parallel jobs
• Enable options like dry-run, keep originals, and force conversion
• View real-time conversion progress and output
• Start, stop, and monitor conversions

Command Line Mode

Basic usage from the project root:

chmod +x convert.sh

./convert.sh -i /path/to/videos -o /path/to/output

Key options:

• -i INPUT_DIR — directory to search for .mp4 files (default: current directory)
• -o OUTPUT_DIR — where converted files are written (defaults to input dir)
• -a AUDIO_CODEC — audio codec for ffmpeg (default: pcm_s16le; accepts lpcm shorthand)
• -f FORMAT — container format/extension for output files (default: mov)
• -n — dry-run (prints actions, does not run ffmpeg or delete originals)
• -k — keep originals (don't delete source .mp4 after successful conversion)
• -F — force conversion even if audio codec isn't aac

Run ./convert.sh -h for the full help text.

Notes:

• Make sure convert.sh is executable before running: chmod +x convert.sh.
• The script depends on ffmpeg / ffprobe being installed and available in PATH.
• The GUI requires Python 3 with tkinter (usually included with Python installations).
• If a video file has multiple audio tracks, all tracks will be preserved without transcoding.