19 FourCC protection_scheme = FOURCC_cenc;
20 uint8_t crypt_byte_block = 0;
21 uint8_t skip_byte_block = 0;
22 uint8_t per_sample_iv_size = 0;
23 std::vector<uint8_t> constant_iv;
24 std::vector<uint8_t> key_id;
25 std::vector<ProtectionSystemSpecificInfo> key_system_info;