cmd:
ffmpeg -hide_banner -user_agent "xxxx" -cenc_decryption_key 8ea131613f968b9c2b07d2d08ce5ef44 -i
https://1157-vos.dtvott.com/DASH/manifest.mpd -c copy video.mp4
After completing the download, the media file must be corrected:
ffmpeg -i video.mp4 -c copy video_fixed.mp4