Do post-processing in background

[jemand771]

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I am downloading large amounts of music from a playlist, converting it to mp3 with the -x flag. The first video gets downloaded and then converted into mp3. (As specified in the command).
The second download starts after the first conversion has finished, the third after the second, and so on.

Now, lets assume it's downloading half of the time and converting half of the time (i know, that really depends on cpu and internet conneciton, which btw are both really bad in my case)
Half of the time, the cpu is doing nothing (almost) because youtube-dl is busy downloading, abd the other half of the time, the internet connection is bored because ffmpeg is busy.
That doubles execution time, which is bad. (Well not too bad, but it could be improved)

I know this might get complicated with veryfying the output files, but maybe there is some way.

That's exactly what i'm doing inside of a shell script, just to mention:
youtube-dl --download-archive archive.txt -k -i --no-post-overwrite -f bestaudio/webm/m4a -x --audio-format mp3 "$url"

I think there is no need for command output because this isn't really specific for any case.
And btw, youtube-dl is awesome anyway, thank you :)

[dstftw]

Just run several instances of youtube-dl.

[jemand771]

this doesn't seem practical to me at all.

would i have to run youtube-dl with playlist to get all the video ids (i know thats possible) and start a new shell for every of those urls or is there an easy way?

The playlist contains about 1300 videos, and i don't download them all in one run

[jemand771]

oh, i think i misunderstood something. I'm sorry

And thank you for your quick response :)