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#!/usr/bin/env bash
# Strict mode for bash; used when wanting to find errors while scripting
set -euo pipefail
IFS=$'\n\t'
RED="\033[1;31m"
RESET="\033[0m"
# Already defining the input file as a variable
# as it was being a pain to check for the input file.
input_file="$1"
# Usage for script
usage() {
clear
cat <<'EOF'
TUI for ffmpeg to cut & change codec.
Usage: ffut video_file
EOF
}
# Bash expanded [] conditions of "video/*" to [..] which
# is a blank string. That was why it was always giving
# error message.
check_for_vid_file() {
if [[ ! $(file --mime-type -b "$input_file") =~ video ]]; then
printf "\n%b\n" "${RED}Error${RESET}: video file not provided (got: %s)." && exit 1
fi
}
# Check for audio file for audio codec converstion
check_audio_file() {
check_input_audio_file=$(file --mime-type -b "$input_file")
if [[ ! $(file --mime-type -b "$input_file") =~ audio ]]; then
printf "\n%b\n" "${RED}Error${RESET}: audio file not provided." && exit 1
fi
}
CommandArgs=$(gum choose --limit 1 --header="Choose: cut or codec" "cut" "codec" || exit 1)
case "$CommandArgs" in
# Trimming videos
cut)
# Funcion call for checking video file
check_for_vid_file
# Take input from the user; what to do?
cut_opt=$(gum choose --limit 1 --header="Choose cut option:" "1. One point to Another" "2. One point to end of video" || exit 1)
case "$cut_opt" in
1*)
# First asking from where to cut and till how much
# then takes the input of the data and applies it to
# ffmpeg command. Finally, asks if original file
# should be deleted.
seek_start=$(gum input --placeholder "Start: HH:MM:SS or MM:SS or sec")
seek_end=$(gum input --placeholder "End: HH:MM:SS or MM:SS or sec")
ffmpeg -ss "$seek_start" -to "$seek_end" -i "$input_file" -c copy "$(date +"%Y%m%d_%H%M ")$input_file" || exit 1
gum confirm "Delete original file?" && rm "$1"
;;
2*)
# Just does the same thing as above but only asks for
# starting point and cuts to the end of the video.
seek_start=$(gum input --placeholder "Start: HH:MM:SS or MM:SS or sec")
ffmpeg -ss "$seek_start" -i "$input_file" -c copy "$(date +"%Y%m%d_%H%M ")$input_file"
gum confirm "Delete original file?" && rm "$1"
;;
*)
# Anything which is not a file after cut option
# will give out usage output.
usage
exit 1
;;
esac
;;
# Codec change
codec)
[[ check_for_vid_file || check_audio_file ]]
# Take input for changin either video or audio codec.
codec_opt=$(gum choose --limit 1 --header="Choose:" "video" "audio" || exit 1)
# On the basis of choice choose video or audio option.
case "$codec_opt" in
video)
video_codec_opt=$(gum choose --limit 1 --header="Choose: video format" "H.264" "H.265" "VP9 [webm]" || exit 1)
case "$video_codec_opt" in
H.264)
ffmpeg -i "$input_file" -c:v libx264 -crf 23 -c:a copy "$(date +"%Y%m%d_%H%M")_h264_$input_file" || exit 1
;;
H.265)
ffmpeg -i "$input_file" -c:v libx265 -crf 28 -c:a copy "$(date +"%Y%m%d_%H%M")_h265_$input_file" || exit 1
;;
"VP9 [webm]")
# Take the input file name, removes extension name with dot
# and changes codec to libvpx-vp9 and ext to webm
output_video_file=$(basename "$input_file" | sed 's/\.[^.]*$//')
output_video_file_name_webm=$(date +"%Y%m%d_%H%M")"_$output_video_file".webm
ffmpeg -i "$input_file" -c:v libvpx-vp9 -crf 30 -b:v 0 -cpu-used -0 -c:a copy -compression_level 10 "$output_video_file_name_webm" || exit 1
;;
*)
usage
exit 1
;;
esac
;;
audio)
check_audio_file
audio_codec_opt=$(gum choose --limit 1 --header="Choose:" "AAC" "OPUS" "MP3" || exit 1)
case "$audio_codec_opt" in
AAC)
output_audio_file=$(basename "$input_file" | sed 's/\.[^.]*$//')
output_audio_file_aac="$output_audio_file".m4a
if ffmpeg -codecs 2>/dev/null | grep -q libfdk_aac; then
ffmpeg -i "$input_file" -c:v copy -c:a libfdk_aac -b:a 192k "$output_audio_file_aac"
else
ffmpeg -i "$input_file" -c:v copy -c:a aac -b:a 192k "$output_audio_file_aac"
fi
;;
OPUS)
# Basically taking audio file and changing codec to libopus
# and file extension to .opus
output_audio_file=$(basename "$input_file" | sed 's/\.[^.]*$//')
output_audio_file_opus="$output_audio_file".opus
# opus codec for best efficiency
ffmpeg -i "$input_file" -c:a libopus -b:a 128k -vn "$output_audio_file_opus"
;;
MP3)
# Same thing changing codec to libmp3lame and file
# extension to .mp3
output_audio_file=$(basename "$input_file" | sed 's/\.[^.]*$//')
output_audio_file_mp3="$output_audio_file".mp3
# High quality mp3 conversion
ffmpeg -i "$input_file" -c:a libmp3lame -q:a 2 -vn "$output_audio_file_mp3"
;;
*)
usage
exit 1
;;
esac
;;
esac
;;
*)
usage
exit 1
;;
esac
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