Warning: Minor SPOILERS for Avengers: Infinity War ahead

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The marketing push for Avengers: Infinity War is currently underway, and fans are being treated to a whole host of new TV spots. The latest is bears the title "Chant" - a minute-long promo set largely in Wakanda. The highlights of the TV spot are the moment Steve Rogers is reunited with Bucky, and an entertaining conversation between Black Panther and Okoye. Look closely at the TV spot, though, and you'll spot an interesting (and worrying) detail.

As is customary, Marvel uploaded the TV spot to a number of key social media channels, including YouTube and Twitter. But here's the catch; each social media channel has a slightly different frame size for videos. Twitter's is longer than YouTube, optimized to display best on a mobile device. As such, it shows a little bit more of the top and bottom of each scene. Normally, that doesn't matter, but Marvel is being extremely secretive when it comes to Infinity War, and any detail could prove important. Say, for example, a single moment at 0:24 in which the Twitter version of the TV spot appears to reveal just how many Infinity Stones Thanos has actually acquired.

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Thanos Has Four Infinity Stones

The scene in question is one in which Thanos has used the Space Stone to teleport. That's why the Space Stone is glowing blue - it's active. But along with the Space Stone, Thanos also clearly has three other Infinity Stones on the Gauntlet. Given the Infinity Stones are color-coded, it's possible to work out which ones they are.

• The purple Stone is the Power Stone, which Thanos liberated from Xandar. In ancient times, this was used by the Celestials to judge entire worlds. The trailers have suggested Thanos has already acquired this by the time he confronts the Asgardians; it's visible when he adds the Space Stone to the Gauntlet.
• The red Stone is the Reality Stone, which was introduced in Thor: The Dark World as the Aether. In an interview with Screen Rant, Joe Russo confirmed that Infinity War will see the Reality Stone in action. This was hidden by the Collector, which bodes ill for the Elder of the Universe.
• Finally, there's also what seems to be an orange Stone - the Soul Stone, recently teased to be "the biggest threat of them all." This is actually the first glimpse fans have had of the Soul Stone, which hasn't been seen in play in the MCU at all to date. It seems that Thanos has successfully located the Soul Stone by this scene in the film, and wields its phenomenal power.

Notice also which stones Thanos hasn't acquired by this point. It's not really a surprise to see that he isn't wielding the Mind Stone; the entire third act of Infinity War seems to involve the Avengers laying a trap, using the Mind Stone as bait. But he also doesn't have the Time Stone, despite scenes showing Ebony Maw defeating Doctor Strange with apparent ease. The Time Stone's absence may add credence to the theory that Ebony Maw will betray his master, seeking to use the Time Stone for his own evil ends.

It's still uncertain whether or not Thanos will take possession of all six Infinity Stones by the end of the film. One thing's for sure, though; this TV spot shows him wielding the power of four of the six. That certainly makes the Mad Titan the greatest threat the Avengers have ever faced.

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