Download a video from Videocampus Sachsen

vcs-downloader.sh

#file=$1
#videoname=$(echo "$file" | cut -d "." -f1)
#echo "$videoname"
touch playlist.txt
touch urllist.txt

key=$1
videoname=$2

#keystring=$(cat $file | grep -o -E "key=[0-9,a-z]+")
#key=$(echo "$keystring" | cut -c 5-)

link="https://videocampus.sachsen.de/media/hlsMedium/key/$key/format/auto/ext/mp4/learning/0/path/m3u8"

playlist=$(curl -s "$link" | tail -n 1)
newLink="https://videocampus.sachsen.de/media/hlsMedium/key/$key/format/auto/ext/mp4/learning/0/path/$playlist"
wget -O playlist.m3u8 "$newLink"

for line in $(cat playlist.m3u8 | grep ".ts"); do
	partLink="https://videocampus.sachsen.de/media/hlsMedium/key/$key/format/auto/ext/mp4/learning/0/path/$line"
	echo "$partLink" >> urllist.txt
	echo "file $line" >> playlist.txt
done

cat urllist.txt | parallel -j 50 'wget {}'

ffmpeg -f concat -i playlist.txt -c copy $videoname.mp4

rm playlist.m3u8
rm playlist.txt
rm urllist.txt
rm *.ts

I just retried it without deleting anything and it worked for all videos.
The only thing I changed, is that I worked from a different network. No clue, what the problem was :)

To download some videos today I wasn't succesful with the script but these steps worked:

1. In Browser login to Videocampus
2. Press Play on the video
3. Open Developer Tools > Tab Network
4. Use the XHR filter

(Show screenshot)

7. Right-Click on any of the files of type ocet-stream, copy as link (German "Wer kopieren" > "Als Link kopieren")
8. Replace the string as follows:

# in
https://videocampus.sachsen.de/media/hlsMedium/key/[String A]/format/auto/ext/mp4/learning/0/path/[String A]_[String B]_480p_mp4_193.ts
# out
https://videocampus.sachsen.de/getMedium/[String A].mp4?[String B]&format=1080p

Example:

# in
https://videocampus.sachsen.de/media/hlsMedium/key/f5eo8eezg6n19eo53v74a3965ll5rs02r/format/auto/ext/mp4/learning/0/path/f5eo8eezg6n19eo53v74a3965ll5rs02r_1666077443_480p_mp4_193.ts
# out
https://videocampus.sachsen.de/getMedium/f5eo8eezg6n19eo53v74a3965ll5rs02r.mp4?1666077443&format=1080p