Here's a random MP4 video of a car from Gfycat: https://thumbs.gfycat.com/IdolizedInformalKoalabear-mobile.mp4

When using with AVPlayer it starts playing 90% of the way through. On the next play through it starts playing from the beginning properly. This is causing a weird edge case with my code and I'm wondering if there's a reason AVPlayer is behaving like this that I can curtail or work with properly? Is it metadata in the video file indicating to do this?

Here's really simple sample code you can copy-paste into any view controller to test:

guard let url = URL(string: "https://thumbs.gfycat.com/IdolizedInformalKoalabear-mobile.mp4") else { return }
let player = AVPlayer(url: url)
let playerViewController = AVPlayerViewController()
playerViewController.player = player

present(playerViewController, animated: true) {
    player.play()
}

(Make sure you import AVKit)