yt-dlp:tldr:5a09b

The command you provided is for the yt-dlp tool, which is a command-line program used for downloading videos and audio from various online platforms, including YouTube.

Let's break down the command:

yt-dlp --extract-audio --audio-format ${mp3} --audio-quality ${0} "${https:--www-youtube-com-watch?v=oHg5SJYRHA0}"

• yt-dlp: This is the command-line tool name. It is used to run the yt-dlp program.
• --extract-audio: This option instructs yt-dlp to only extract the audio from the given URL and not download the video.
• --audio-format ${mp3}: This option specifies the format of the extracted audio. In this case, the value is set to ${mp3}, which implies that the variable mp3 should hold the desired audio format, e.g., "mp3". This variable should be defined elsewhere in your script or command.
• --audio-quality ${0}: This option determines the audio quality of the extracted audio. The value is set to ${0}, indicating that the variable 0 should hold the desired audio quality. Similar to the previous option, this variable should be defined elsewhere in your script or command.
• "${https:--www-youtube-com-watch?v=oHg5SJYRHA0}": This is the URL of the video from which you want to extract the audio. Enclosing the URL in double quotes is necessary when using certain characters in the URL, such as "&". Make sure you replace this example URL with the actual YouTube video URL you want to download.

Overall, this command uses yt-dlp to extract the audio from a YouTube video, specifying the desired audio format and quality using variables.