Against a blue background the white fairytale castle logo of Walt Disney Pictures. The castle is bleached out by a white flash, and an arc of light encircles it. (source)
This is a line from a YouTube video. From a Free Dictionary page, "bleach out" seems to mean "remove a stain." But this definition doesn't seem to apply here. There is no bleaching in the video. And the white flash simply travels above the castle, not bleaching it. What does "bleach out" mean in this context? Or is it possible YouTube's automatically generated subtitles have made a mistake, and it is a different verb in the video?