[0x70dd]

iPhones record videos with variable frame rate, which makes them unsuitable for syncing the video with a separate recorded audio track (e.g. when recording guitars). The video and audio would ever so slightly go our of sync. I wish there was a way to use fixed frame rate when recording.

[GeekyBear]

As covered in the article, the free Final Cut Camera app gives you full control of the camera settings, including fixed frame rates.