There are no words on the video which means it can be used internationally, and on occasions other than New Year (eg you could use it a Christmas Eve party). It’s also popular for Chinese New Year parties. You can also use the fireworks loop on its own without the Big Ben video.
The download version includes the full 1 hour countdown and the fireworks loop as separate files, allowing you to play the countdown, and then play the fireworks on a continuous loop.
On the DVD version, you can choose to start the countdown 1 hour, 30 minutes, 15 minutes, 10 minutes, or 30 seconds before midnight giving maximum flexibility and a fail-safe should the unexpected happen (such as a power cut) and you need to restart the DVD.