IV undefined Error while decrypting AES encrypted video

Question

I am trying to decrypt AES 128 encrypted video with AES key and IV For decrypting I am using openssl

key —î¡ŒØËÉްʾC{]5q)pZE4d4:-MBB¬vóRJ”7–Æ­‹5•Õ IV 0x496daa1c6914000e408c65cead91fc29

following is command line to decrypt video

openssl enc -nosalt -aes-128-cbc -d -in Question1.ts -base64 -K ^R-î^O¡ŒËÉްʾC^A{]5q)pZE4d4:-MBB^B¬vóR^TJ"7-Æ­‹5•Õ -iv 0x496daa1c6914000e408c65cead91fc29

I got this error

iv undefined

First I used AES key in command line in base64 format and got following error

hex string is too long, ignoring excess
non-hex digit
invalid hex iv value

then I used AES key in normal format and got error about IV

iv undefined

Which step should be followed to decrypt video with openssl?