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made my first bash file to make yt-dlp easier (lemmy.ml)
submitted 8 months ago by to c/linux@lemmy.ml
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made it so i just click file and paste YouTube url

Linux is amazing

#! /usr/bin/bash
echo "Enter a url"
read a

yt-dlp -x $a
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[–] 7 points 8 months ago* (last edited 8 months ago) (6 children)

That's great! Here's a few tips to take it a bit further; the world is your oyster!

Open your .bashrc file (e.g. /home/yourusername/.bashrc) and add the following:

alias get="/path/to/your/bash/file"

Now open a terminal and type get, and it'll launch the script. No clicking needed, it'll run anytime from any terminal!

And if you do use the alias then you can use another refinement, you can drop the echo: instead of $a, you can use $1 and remove the echo & read as you no longer need them:

#! /usr/bin/bash yt-dlp -x $1

Now for example you can type in a terminal:

get http://url.to.video/

And yt-dlp will do it's stuff. $1 passes the first parameter after starting the script as a variable to it.

You can use the keyboard shortcut Control+shift+v to paste a URL into the terminal, no mouse needed; just remember to add a space after typing get

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  • [–] 2 points 8 months ago* (last edited 8 months ago) (4 children)

    What does your ~/.bashrc look like? My last change was modifying a playlist command

    spoiler: I explain my last change to my ~/.bashrc file

    playlist https://www.youtube.com/@YouTube/videos

    or

    playlist /home/username/Videos

    or just from any directory with files

    playlist

    And then takes all the videos found at the url or at the path (including within folders), adds them to a playlist, shuffles them, and plays them from mpv.

    playlist() {
        param=""

        # If the first parameter has a length more than 1 character
        if [ ${#1} -gt 1 ]; then
                param="${@}"
        else
                param="."
        fi

        screen mpv $param --shuffle --ytdl-raw-options-add=cookies-from-browser=firefox --loop-playlist=inf --no-keepaspect-window --no-auto-window-resize
}

    other functions and aliases in my ~/.bashrc

    alias code=codium
alias files=nautilus
alias explorer=nautilus
alias rust="/path/to/.cargo/bin/evcxr"
alias sniffnet="export ICED_BACKEND=tiny-skia; /path/to/.cargo/bin/sniffnet"
alias http-server='/path/to/.cargo/bin/miniserve'
alias iphone='uxplay'
alias airplay='uxplay'
alias watch='screen mpv --ytdl-raw-options-add=remote-components=ejs:github --ytdl-raw-options-add=cookies-from-browser=firefox --no-keepaspect-window '
alias twitch='watch'
alias timeshift-launcher="pkexec env WAYLAND_DISPLAY='$WAYLAND_DISPLAY' XDG_RUNTIME_DIR='$XDG_RUNTIME_DIR' /usr/bin/timeshift-launcher"
alias update="sudo apt update && sudo apt upgrade -y && sudo flatpak update -y && sudo snap refresh"
alias resize="path/to/resize/videos/resize.sh"

playlist() {
        param=""

        # If the first parameter has a length more than 1 character
        if [ ${#1} -gt 1 ]; then
                param="${@}"
        else
                param="."
        fi

        screen mpv $param --shuffle --ytdl-raw-options-add=cookies-from-browser=firefox --loop-playlist=inf --no-keepaspect-window --no-auto-window-resize
}

gif() { ffmpeg -i $1 -f yuv4mpegpipe - | gifski -o $2 ${@:3} -;}

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  • [–] 1 point 8 months ago (3 children)

    I wonder if we have the same resize.sh

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  • [–] 1 point 8 months ago (2 children)

    The version I have was copied from stackoverflow. It doesn't work very well, it makes a rough estimate to get the video file size under the set value. As an example

    resize video.mp4 10

    Which then resizes the video to 10 megabytes if possible.

    resize.sh code

    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"

    I'll probably replace it eventually.

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  • [–] 2 points 8 months ago* (1 child)

    Definitely not the same lol

    Mine uses ffmpeg to change the resolution, it doesn't so much care about file sizes.

    It could be a one-liner if you only ever feed it a single file to manipulate..

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  • [–] 2 points 8 months ago

    I might add one for scaling. I just don't use it as frequently as trying to meet a file size limit. The scaling is also much easier to remember

    ffmpeg -i  in.mp4 -vf "scale=600:-1" -an out.mp4

    It does get complicated though, when scaling many videos and images, I've used something like the following in the past

    find .  -exec ffmpeg -i {} -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:-1:-1:color=black" {}.mp4 \;

    Those were the only two that showed up when I typed history | grep scale.

    after commenting, I also added a new video file resizer.

    It works significantly better than the one I previously posted. It's also copied from stackoverflow.

    bitrate="$(awk "BEGIN {print int($2 * 1024 * 1024 * 8 / $(ffprobe \
    -v error \
    -show_entries format=duration \
    -of default=noprint_wrappers=1:nokey=1 \
    "$1" \
) / 1000)}")k"
ffmpeg \
    -y \
    -i "$1" \
    -c:v libx264 \
    -preset medium \
    -b:v $bitrate \
    -pass 1 \
    -an \
    -f mp4 \
    /dev/null \
&& \
ffmpeg \
    -i "$1" \
    -c:v libx264 \
    -preset medium \
    -b:v $bitrate \
    -pass 2 \
    -an \
    "${1%.*}-$2mB.mp4"

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