Köszi!

"Following recorders appear to encrypt the Video
Unfortunately it's not all sunshine and rainbows. Despite the fact that IsoBuster is able to find the video recordings on following models, after extraction the video often appears to be encrypted. IsoBuster doesn't support decrypting purposely encrypted video. So, beware.
Sony RDR-HX / RDR-HXD models: 510, 520, 525, 710, 715, 717, 720, 722, 725, 727, 730, 820, 825, 900, 910, 919, 920, 925, 1000, 1010, 1020, 1025If you have encountered other models that also encrypt the data, IsoBuster supported or not, do let us know so that we can complete this list."