My iPhone XR screen record won't record my video sounds?

I Have a iPhone XR and my screen record won't pick up the sound from my video I make sound my mic is on and my sound is on too but still when I screen record I get no sound on my videos can someone please help

Follow these instructions:

Not all apps allow sound recording.

  • Why won't my iPhone record audio when I take a video? Every time I try to record a video with my iPhone it won't pick up the audio. All I here is this static noise. Sometimes I can barley hear my voice behind all the static. It just randomly started happening. When I record in voice memo it picks up my voice just fine. Phone calls work fine too. It just doesn't work when I try to take a video.
  • Why won't my iPhone make certain sounds anymore? For some reason my iPhone is not making sounds for certain apps such as camera, or for standby mode. I checked the settings, and both "lock sounds" and "keyboard clicks" are on, yet I don't hear either of these. I know the speaker works, because it plays music and I can use speaker phone. Anyone have any clue what the problem could be? I also tried resetting the iPhone, didn't work.
  • My sounds won't work on iPhone 5? Everytime I try to turn up/down my volume, it says there's headphones in and my sound won't work. How do I fix it?
  • Is there any App that can watch video and record your sound while play the video? Like the Title said I can't find any app from IPhone, my house is too loud, and I can't convice someone to lower the sound. Is there any app that can record your voice while watching videos?