av_editing.sh

#!/bin/bash
# ffmpeg video editing workflow script
set -e #exit immediately on errors

original_file=`basename "$1"`
cd `dirname "$1"`

if [ -z "$original_file" ]
then
    echo "av_editing.sh - ffmpeg video editing workflow"
    echo "  Strips out audio for editing, then recombines it."
    echo "  Use: $0 <filename>"
    exit 1
fi

#http://stackoverflow.com/questions/965053/ddg#965072
extension="${original_file##*.}"
noext_name="${original_file%.*}"

# Strip audio into separate file
audio_fn="$noext_name".wav
video_fn="$noext_name"_noaudio."$extension"
ffmpeg -i "$original_file" "$audio_fn"
ffmpeg -i "$original_file" -c copy -an "$video_fn"

# Open audio file in Audacity
audacity "$audio_fn"

# Press Enter to continue (or input audio file name)
new_audio_file="$noext_name"_edit.wav #default
printf "Press Enter or give filename to recombine (default: %b)\n" "$new_audio_file"
read waitcmd

#if given, use the filename instead
if [ -n "$waitcmd" ]
then
    new_audio_file="$waitcmd"
fi

# Combine new audio file to video only
final_fn="$noext_name"_final."$extension"
ffmpeg -i "$video_fn" -i "$new_audio_file" -c:v copy -c:a aac -strict experimental "$final_fn"

# Clean-up temp files
rm "$video_fn"
rm "$audio_fn"
rm "$new_audio_file"