Unknown Sound in clip

Scary Pop Up - Unknown Sound in clip is a screamer video uploaded to YouTube by ThePopUpVideos on May 8th, 2010.

The video starts with a box reading "TRACK 4206# NOT PUBLISHED" appearing at the top before disappearing. A clicking/crunching sound effect starts to play, and the video states that a strange noise can be heard buried in the mix, with instructions to turn up the volume. As the video continues, it tells the viewer to listen carefully, and at that very moment, a demon child from the horror movie "Dead Birds" pops up on the screen with a scream from the video game Mortal Kombat.

Link
NOTE : The following video contains a screamer.
 * youtube.com/watch?v=ND6xzsdbPIY