Scrolling Audio Waveform Bars Loop 128 BPM Black Overlay 4K Vertical - 4K 影片檔

A track's audio waveform drawn as mirrored rounded bars scrolls past a fixed playhead on pure black: played audio turns gold, what is still to come stays dim, and each bar flashes as it crosses. Kick bars cross exactly on the beat, with a roll building into the loop point. Beat-synced to 128 BPM: the loop is exactly 8 bars of 4/4, with the biggest accent on the first frame. The background is true black (#000000) from edge to edge, with no vignette, gradient or grain: set the layer to Screen or Add and only the light stays over your footage. Seamless 15-second loop, no text. Vertical 9:16 cut for reels, stories and phone screens.