laste ned radio-filer fra nrk skal ikke være lett nei..

Get-NrkRadioChunks.ps1

<#
needed to get one song from 
https://radio.nrk.no/serie/vahkkoloahppa/SAPR04030320

eventually figured out that they stream the audio in .ts
chunks. you will need to find the chunk url, for example:
https://nrkod98-cdn0-47115-odedge1.dna.contentdelivery.net/47115-odedge1/open/ps/sany/sany01011324/ae83c997-2.smil/sc-gaFEAA/
at the end there will be something like a1_F0000.ts
we need to loop through every one. you can either loop
until you get a 404, or find the a1 index.m3u8 file (in this case)
and count from 0 to the end. 

fore example i wanted ONE song from this radio programme 
Jan Ole Hermansen - Movttegis Nieiddat
(not available anywhere else i've found..)
this was a1_F0000.ts -> a1_F2692.ts
now you need to combine all of the .ts files into one

ffmpeg is the best tool for the job

https://nrk-od-world-98.akamaized.net/open/ps/sany/sany01011324/ae83c997-2.smil/sc-gaFEAA/a1_index.m3u8

a1_F0000.ts
...
a1_F2692.ts

a1_F0125.ts
a1_F0176.ts
#>

# in my case
# change this to suit your needs
$root = "https://nrkod98-cdn0-47115-odedge1.dna.contentdelivery.net/47115-odedge1/open/ps/sany/sany01011324/ae83c997-2.smil/sc-gaFEAA/{0}"
$chunks = "C:\path\to\dl\chunks"

0..2692 | % {

    $chunk = "a1_F{0}.ts" -f $_
    $url = $root -f $chunk
    $fp = Join-Path $chunks $chunk
    Invoke-WebRequest $url -OutFile $fp
}

<#

now you need to make a txt file to concat all 
of the .ts files with ffmpeg. 


$tsfiles = dir $chunks <where they are stored  | select -expandproperty fullname 
$combinedts = "where you want the concat text file stored combinedTS.txt"

if (!(test-path $combinedts)) {
    new-item -Path $combinedts -ItemType File
}

foreach ($ts in $tsfiles) { 
    $lineName = "file '{0}'" -f $ts
    Add-Content -Value $lineName -Path $combinedts -Encoding UTF8
}
#>


<#
now with ffmpeg.exe:
ffmpeg -f concat -safe 0 -i .\combinedTS.txt -c copy -bsf:a aac_adtstoasc video.mp4

PS: the combined file NEEDS to be UTF8, not "UTF with bom"
if you get an error, check tat.

#>