Download YouTube video and video (yt-dlp wrapper)

yt-dl.sh

#!/bin/sh

# Dependencies:
# - yt-dlp https://github.com/yt-dlp/yt-dlp
# - ffmpeg

# Prepare the "list.txt" that is a list of YouTube video IDs.
# (Video ID is a value of "v" key in YouTube URL: youtube.com/watch?v=video_id )
# Tips: 
# - To extract all the video IDs from a YouTube playlist, use "--get-id" option.
#   $ yt-dlp --get-id https://www.youtube.com/playlist?list=list_id > list.txt

for i in $(cat list.txt); do
    # show ID and title
    echo $i 
    yt-dlp -e https://www.youtube.com/watch?v=$i

    # Download video
    # ID  EXT   RESOLUTION FPS CH │   FILESIZE    TBR PROTO │ VCODEC           VBR ACODEC      ABR ASR MORE INFO
    # 597 mp4   256x144     15    │     1.26MiB    33k https │ avc1.4d400b      33k video only          144p, mp4_dash
    # 136 mp4   1280x720    30    │    85.48MiB  2207k https │ avc1.4d401f    2207k video only          720p, mp4_dash
    # 398 mp4   1280x720    60    │    56.24MiB  1452k https │ av01.0.08M.08  1452k video only          720p60, mp4_dash
    # 298 mp4   1280x720    60    │   131.96MiB  3407k https │ avc1.4d4020    3407k video only          720p60, mp4_dash
    # 399 mp4   1920x1080   60    │   102.53MiB  2648k https │ av01.0.09M.08  2648k video only          1080p60, mp4_dash
    # 299 mp4   1920x1080   60    │   222.07MiB  5734k https │ avc1.64002a    5734k video only          1080p60, mp4_dash
    # 400 mp4   2560x1440   60    │   222.03MiB  5733k https │ av01.0.12M.08  5733k video only          1440p60, mp4_dash
    # 401 mp4   3840x2160   60    │   458.57MiB 11841k https │ av01.0.13M.08 11841k video only          2160p60, mp4_dash
    # 571 mp4   7680x4320   60    │   978.30MiB 25262k https │ av01.0.17M.08 25262k video only          4320p60, mp4_dash
    filename_mp4=$(yt-dlp -f 597 --get-filename  https://www.youtube.com/watch?v=$i)
    for fmt in 571 401 400 299 399 298 398 136; do
        if [ ! -e "$filename_mp4" ]; then
            yt-dlp -i -w -f $fmt https://www.youtube.com/watch?v=$i
        fi
    done

    # Download audio
    # format code  extension  resolution note
    # 599 m4a   audio only      2 │     1.19MiB    31k https │ audio only           mp4a.40.5   31k 22k ultralow, m4a_dash
    # 139 m4a   audio only      2 │     1.89MiB    49k https │ audio only           mp4a.40.5   49k 22k low, m4a_dash
    # 140 m4a   audio only      2 │     5.02MiB   129k https │ audio only           mp4a.40.2  129k 44k medium, m4a_dash
    filename_m4a=$(yt-dlp -f 599 --get-filename  https://www.youtube.com/watch?v=$i)
    for fmt in 140 139 599; do
        if [ ! -e "$filename_m4a" ]; then
            yt-dlp -i -w -f $fmt https://www.youtube.com/watch?v=$i
        fi
    done

    # Combine video(mp4) and audio(m4a) to "out" directory
    mkdir -p out
    if [ -e "$filename_mp4" -a -e "$filename_m4a" ]; then
        ffmpeg -y -i "$filename_mp4" -i "$filename_m4a" -c copy "out/$filename_mp4"
    fi

    # clean up
    rm "$filename_mp4"
    rm "$filename_m4a"
done

impressive! wow!