zshrc

#
# Executes commands at the start of an interactive session.
#
# Authors:
#   Sorin Ionescu <sorin.ionescu@gmail.com>
#

# Source Prezto.
if [[ -s "${ZDOTDIR:-$HOME}/.zprezto/init.zsh" ]]; then
  source "${ZDOTDIR:-$HOME}/.zprezto/init.zsh"
fi

# Customize to your needs...
alias mpv='flatpak run io.mpv.Mpv'
alias meld='flatpak run org.gnome.meld'
alias lutris='flatpak run net.lutris.Lutris'
# alias ffmpeg='flatpak run --command=ffmpeg --filesystem=home net.lutris.Lutris'
alias streamlink='streamlink --twitch-disable-ads --player /var/lib/flatpak/exports/bin/io.mpv.Mpv'
alias yt-dlp='pip install yt-dlp --user --upgrade; yt-dlp'
alias yt-dlp-mp4='yt-dlp --recode-video mp4'
# ^TODO: find a way to pass recode arguments to yt-dlp `-movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2"`

ffmpeg_resize () {
    file=$1
    target_size_mb=$2  # target size in MB
    target_size=$(( $target_size_mb * 1000 * 1000 * 8 )) # target size in bits
    length=`ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 "$file"`
    length_round_up=$(( ${length%.*} + 1 ))
    total_bitrate=$(( $target_size / $length_round_up ))
    audio_bitrate=$(( 128 * 1000 )) # 128k bit rate
    video_bitrate=$(( $total_bitrate - $audio_bitrate ))
    ffmpeg -i "$file" -b:v $video_bitrate -maxrate:v $video_bitrate -bufsize:v $(( $target_size / 20 )) -b:a $audio_bitrate "${file}-${target_size_mb}mb.mp4"
}