PC Hardware Problems
Your iPhone records HD-quality videos, so the issue may be on your PC or laptop. If your computer doesn’t have a video card that can properly compress and handle HD video, then you’ll get a lot of lag or choppiness. If your PC supports HD video, changing your default media player to one that supports HD quality video will likely remove the lag.
Using Apple TV’s Cache
If you’re streaming videos to an Apple TV, you likely experience choppiness no matter the video length. Your iPhone doesn’t automatically compress your video, so you’re sending a large file over your Wi-Fi network – which will likely struggle to handle the file size – to the Apple TV, which also lacks some compression. You can avoid this buffering issue when you want to watch a video, however, by sending the whole thing to your Apple TV ahead of time. This will store the video in the Apple TV’s cache – as long as you don’t watch content afterward – and can then be played again without buffering and lag. Writer Bio
