Lines/Bars, Green/Blue Spectrum - Lower Third - this lower-third is also part of the theme set titled Lines/Bars, Green/Blue Spectrum. The black background is actually transparent (alpha channel) and would reveal the images beneath this lower-third element in your composite.

NTSC format = 720 X 486, 29.97 fps (progressive), PNG Compression

Quicktime (.mov) Format
30 seconds long (loop)