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It was a dramatic videowas widely shared when it appeared last Friday by Telegram channels sympathetic to Russian-backed separatists in eastern Ukraine.

It is believed to have shown a barrage of guns and shelling by Polish-speaking vandals attempting to detonate a chlorine tank near the city of Horlivka a week earlier – on 11 February. Horlivka is in territory controlled by the separatists of the self-proclaimed Donetsk People’s Republic.

The DPR’s People’s Militia press service picked it up and stated that the vandals had been killed and the video had been recovered from their bodies.

However, metadata from the video file reveals the creation date as February 8, ten days before it was shared on Telegram, a CNN analysis shows. And three days before the alleged attack.

The messaging platform reserves the metadata for the videos posted there and it cannot be changed.

But that’s not all. Another piece of metadata – called the “pantry maker” – reveals that Adobe Premiere Pro was used to edit videos with different assets – called “components” – from a separate repository.

Givi Gigitashvili, research associate at the Atlantic Council’s Digital Forensic Research Laboratory.

“The component file path of this particular video contains the name ‘2021-02-04 ВИДЕО-ЗАПИСЬ ДРГ (+). Mp4’, which can indicate some components dating back to 2021,” he added.

The location of that and other video assets also has “2021” and “February 2” as names for the project folders, again indicating that the original timeframe is from last year.

Among these, also in the Pantry section of the metadata, is the filename “M72A5 LAW and AIPLAS live fire.mp4.”

First noticed by Bellingcat founder and creative director Eliot Higgins, the filename corresponds to a YouTube video of the same name, featuring explosions and gunfire at a location in Finland.

CNN asked Rob Maher, an audio forensics expert at Montana State University, to analyze the media contents. He compared the boom sequence sound from one of the footage in the YouTube video to the similar sound in the Telegram video.

“The sequence of explosions is remarkably similar in time,” concludes Maher. “For the particular boom I compared, the timing is not exactly the same, but it is confusingly similar.”

According to Maher, for the burst sequences in both videos to be the same, “the geometric relationship between the cannon fragment, the target, and the microphone would have to be the same” – meaning they had to be in exactly the same place in both videos.

If the shapes are different, “the relative arrival times of different boom sounds will be different” because the boom sounds will travel to the microphone at different speeds.

Maher concluded: “It seems quite surprising and coincidental that the timing of that sound is so similar in these two ‘unrelated’ videos. “If it is confirmed that the separatist video contains edited audio, then this could be an explanation.”

Maher’s findings are corroborated by other designers and sound experts on Twitter such as Ciaran Walsh, who compared the spectral analysis of the explosions in the two videos and reached similar conclusions.

“I think (there is) a lot of evidence that the audio was added from that YouTube video,” said Gigitashvili.

This is not the first time separatists have posted questionable videos on Telegram. A CNN analysis of Friday’s video statements by the leaders of the DPR and the Luhansk People’s Republic revealed that The footage was recorded 2 days earlier.



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