How to decrypt the encrypted video?

[haikuoY]

" - mvs: Motion vector magnitudes."
" - mv_signs: Motion vector signs."
" - trans_coeffs: Coefficient magnitudes."
" - trans_coeff_signs: Coefficient signs."
" - intra_pred_modes: Intra prediction modes."
five encrypted syntaxes. Should I remember the encryption key sequence? Is the key sequence order of encryption and decryption the same?

[Jovasa]

As long as you know the original key you can regenerate the cipher sequence. The sequence is the same for encryption and decryption. In general, for decryption you will need to use https://github.com/OpenHEVC/openHEVC/tree/hevc_encryption