Extended Commercial Blacks
Black segments that are longer than the maximum allowed duration (2 seconds) exist in the content.
Edit the video to reduce the duration of the commercial black segment that is present.
If you have also uploaded associated assets for an affected video (i.e. Secondary Audio or Timed Text) then these will need to be adjusted and redelivered as well to maintain sync. Please contact your Netflix representative and ask them to issue Redelivery Requests for those assets as well.