Former Celebrity Juice panellist Hound debuted the one-sheet through his Twitter account, saying: "Apologies for another tweet of this, but it's really exciting. The poster for my movie!"
The romantic comedy, from Made in Dagenham and Calendar Girls director Nigel Cole, follows a newly-married couple's best man as he attempts to capture their big day on camera.
Peep Show star Robert Webb and Lucy Punch play the couple tying the knot, while Miriam Margolyes and Harriet Walter are among the supporting cast.
The Wedding Video will open in cinemas on August 17.