is saved as @var{playlist name}.key.
@item -hls_enc_key @var{key}
-Hex-coded 16byte key to encrypt the segments, by default it
+16-octet key to encrypt the segments, by default it
is randomly generated.
@item -hls_enc_key_url @var{keyurl}
in the playlist.
@item -hls_enc_iv @var{iv}
-Hex-coded 16byte initialization vector for every segment instead
+16-octet initialization vector for every segment instead
of the autogenerated ones.
@item hls_segment_type @var{flags}