youtube-dl:tldr:5678d  
        
        youtube-dl: Download video(s) as MP4 files with custom filenames.
        
        $ youtube-dl --format ${mp4} -o "${%(playlist_index)s-%(title)s by %(uploader)s on %(upload_date)s in %(playlist)s-%(ext)s}" '${url}'
    
        try on your machine
    
                
    
This command is used to download videos from YouTube using the youtube-dl tool with specific formatting options. Here is a breakdown of the command:
youtube-dl: It is the command-line program used to download videos from YouTube and other supported websites.--format ${mp4}: This option specifies the desired video format for downloading. In this case, it uses the variable${mp4}to represent the format. You would need to define the value of${mp4}before using this command.-o "${%(playlist_index)s-%(title)s by %(uploader)s on %(upload_date)s in %(playlist)s-%(ext)s}": This option is used to define the output template for the downloaded video file. It specifies the file name pattern to be used. The%(placeholder)ssyntax is used to insert various metadata values into the filename. Here is the breakdown of placeholders used:%(playlist_index)s: Represents the index of the video within the playlist.%(title)s: Represents the title of the video.%(uploader)s: Represents the name of the uploader of the video.%(upload_date)s: Represents the date when the video was uploaded.%(playlist)s: Represents the name of the playlist (if applicable).%(ext)s: Represents the file extension of the video.
'${url}': This is the last argument and it represents the URL of the YouTube video you wish to download. You would need to replace${url}with the actual URL of the video you want to download.
Overall, this command will download a YouTube video with the specified format and save it with a customized filename based on the provided template.
                This explanation was created by an AI. In most cases those are correct. But please always be careful and
                never run a command you are not sure if it is safe.