This is the 17300th most frequent Korean word.
선공개
"선공개" means "pre-release."
In this sentence, '선공개된' describes the video as one that has been previewed or released early, emphasizing its state due to prior exposure.
선공개된 영상이 많은 관심을 받았어요.
The previewed video received a lot of attention.
Here, '선공개하기로' indicates the intention or decision to release the product early or as a preview.
회사에서 제품을 선공개하기로 결정했어요.
The company decided to preview the product.
In this context, '선공개되었습니다' communicates that the trailer was made available ahead of a general release as a preview.