Feeds - import multiple images

Use Feeds , Feeds Tamper to import field with multiple values
use sql to group multiple value with separator "|"
multiple values field will look like this
xxx|xxx|xxx
SELECT p.program_id , GROUP_CONCAT(i.img_url SEPARATOR '|') as uri , GROUP_CONCAT(i.img_caption SEPARATOR '|') as title FROM event as p left join images as i on p.program_id = i.ref_id group by p.event_id order by p.event_id limit 0,2000
 
Feed Tamper > set the field with multiple values with "explode" rule with "|" as separator.
 
to import image with title description , alt description
csv will look like this
img path           img title           img alt
xxx|xxx|xxx      xxx|xxx|xxx     xxx|xxx|xxx