This video has been digitally created using 3D simulation tool

The claim was shared here on Facebook on July 5, 2021.

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Screenshot of the misleading Facebook post, captured on 7 July, 2021.

The claim was shared alongside a link to a YouTube clip titled "The winner of Hanwha International Fireworks Festival" posted on 27 August 2015.

The Seoul International Fireworks Festival is an annual event in the South Korean caption, last held in October 2019 as 2020's edition was cancelled due to the Covid-19 pandemic. 

The event is also referred to as "Hanwha International Fireworks Festival" since it is jointly hosted by the Seoul Metropolitan Government and the South Korean conglomerate Hanwha Group.

The same video has been widely shared online, including in this post from 2015 where it has attracted more than 2.7 million views. 

However, the claim is false.

A reverse image search found the original clip was shared here on YouTube on January 4, 2013 by a user  "mediabyjj."

The caption of the video titled "New Years 2013 - Synchronized Epic Music (Heart of Courage) - FWSim Fireworks Display - HD" reads in part: "I wanted to continue the party by sharing this fireworks display I created & actualized. It took me a little over a week to complete, and I am very happy with the outcome.

"The great software used to mastermind a production like this is FWSim."

FWsim is a 3D firework simulation tool.

According to FWsim's official website, users can "create firework displays with your favourite music" and "build firework effects, or choose from a huge effects library" with the tool.

Lukas Trötzmüller, the founder of FWsim, confirmed that the video seen in the misleading Facebook post was created by using FWsim simulator.

"It has nothing to do with the actual event or Seoul," Trötzmüller told AFP via email on July 6, 2021.