2025-03-07, 07:47 PM
finally, it's work as expected. As Efficient_Good_5784 said I set intervals, the default value was 1: Dashboard > Libraries > Metadata > "Chapter Image Intervals"
then refresh metadata per item (e.g. movie): select refresh mode 'replace all metadata'
then refresh metadata per item (e.g. movie): select refresh mode 'replace all metadata'