*
* @param subsample_count The number of subsamples.
* @param key_id_size The number of bytes in the key ID, should be 16.
- * @param key_id_size The number of bytes in the IV, should be 16.
+ * @param iv_size The number of bytes in the IV, should be 16.
*
* @return The new AVEncryptionInfo structure, or NULL on error.
*/