iPhone X Black line moving up screen during slo-no...

[Kal-037]

My month old iPhone X is having an irritating issue.
very irritating, I was taking a slow mo video on iPX and a thick black line kept moving up the screen. When I actually recorded, it recorded the video with the line, then when I tried again the screen flashed black and white.
The ringer is my other issue, it is loud for a second or two then become almost silent. Anyone else have issues like this. The sound issue has been there since setting up the phone in November. I set it up as brand new.
Any help or insight is appreciated.



Kallum.

 

[xraydoc]

My month old iPhone X is having an irritating issue.
very irritating, I was taking a slow mo video on iPX and a thick black line kept moving up the screen. When I actually recorded, it recorded the video with the line, then when I tried again the screen flashed black and white.
The ringer is my other issue, it is loud for a second or two then become almost silent. Anyone else have issues like this. The sound issue has been there since setting up the phone in November. I set it up as brand new.
Any help or insight is appreciated.



Kallum.

Can’t help you with the slow-motion video issue, but for the ringer... if you have attention-awareness turned on, the phone will reduce the volume of alerts & ringers if you’re looking at it. The FaceID camera can see when your eyes are looking at the phone.

 

[lclev]

That is not normal. It sounds like a trip to the genius bar or a call to apple is needed. I have shot some slo-mo and it records and plays back flawlessly - no black bands etc.

Lisa

 

[gahig ulo]

My month old iPhone X is having an irritating issue.
very irritating, I was taking a slow mo video on iPX and a thick black line kept moving up the screen. When I actually recorded, it recorded the video with the line, then when I tried again the screen flashed black and white.
The ringer is my other issue, it is loud for a second or two then become almost silent. Anyone else have issues like this. The sound issue has been there since setting up the phone in November. I set it up as brand new.
Any help or insight is appreciated.



Kallum.

do you have screenshot by any chance!

 

[Kal-037]

do you have screenshot by any chance!

I tried by the bar is so big it just causes the image/video to be darker. Only video shows any problem, but uploading to YouTube just shows the constant flashing issue (YT cut out the first second where the bar is seen)...

I will take it Apple and hope they do something.


K.

 

[gahig ulo]

I tried by the bar is so big it just causes the image/video to be darker. Only video shows any problem, but uploading to YouTube just shows the constant flashing issue (YT cut out the first second where the bar is seen)...

I will take it Apple and hope they do something.


K.

o wow it looks like a flicker.when watch it on your phone its showed like this or just in youtube?

 

[Archer1440]

That’s the lamp in the image. It’s strobing (is it LED?) and the camera shutter is picking up the strobe out of phase.

Try recording in daylight. If it’s still doing it then you have a real problem-otherwise it’s that specific light source.

 

[Vermifuge]

That’s the lamp in the image. It’s strobing (is it LED?) and the camera shutter is picking up the strobe out of phase.

Try recording in daylight. If it’s still doing it then you have a real problem-otherwise it’s that specific light source.

People don’t seem to understand that LEDs and CFLs have a strobing effect that normally can’t be seen by the human eye. Once again this sounds like user error.

@OP LEDs flicker in tune to the frequency of your power grid. Typically 50 or 60 Hz. If the camera censor is out of sync or not on the same frequency this will manifest in a flickering or a scrolling bar in the video / image.

Sometimes switching between the camera and the video options with reset the image sensor and possibly getting them in sync with each other. But chances are you are in a 50hz region. So this probably won’t work.

Why does the bar move? Research rolling shutter vs global shutters

My month old iPhone X is having an irritating issue.
very irritating, I was taking a slow mo video on iPX and a thick black line kept moving up the screen. When I actually recorded, it recorded the video with the line, then when I tried again the screen flashed black and white.
The ringer is my other issue, it is loud for a second or two then become almost silent. Anyone else have issues like this. The sound issue has been there since setting up the phone in November. I set it up as brand new.
Any help or insight is appreciated.



Kallum.

 

[Recognition]

Agree with the above comments,
Most led, fluorescent bulb will strobe when viewed in slow motion.
A filament bulb won’t.

Try slow motion in broad daylight, and see if it still flickers.

 

[Kal-037]

o wow it looks like a flicker.when watch it on your phone its showed like this or just in youtube?

On my phone it recorded with the moving black line, then playing it back it did that strange strobe/flashing effect.
[doublepost=1514391010][/doublepost]

People don’t seem to understand that LEDs and CFLs have a strobing effect that normally can’t be seen by the human eye. Once again this sounds like user error.

@OP LEDs flicker in tune to the frequency of your power grid. Typically 50 or 60 Hz. If the camera censor is out of sync or not on the same frequency this will manifest in a flickering or a scrolling bar in the video / image.

Sometimes switching between the camera and the video options with reset the image sensor and possibly getting them in sync with each other. But chances are you are in a 50hz region. So this probably won’t work.

Why does the bar move? Research rolling shutter vs global shutters

I appreciate the input and info. I work in photography and videography quite often in varying lighting conditions. So this wouldn’t have been as much: “user error” more than “unknown issue with cell phone camera” I did switch back and forth from different settings and features and even reset the iPhone to no avail. Again thank you for the help though, I’m now wondering if I’m just a dummy. *eek

Anyway, I have an appointment with Apple today to check the device, I doubt they’ll do anything as it doesn’t happen every time, but I also don’t use slow mo very often.


Kallum.

 

[Recognition]

But did you try it outside in broad daylight? Does it still happen then?

 

[Kal-037]

But did you try it outside in broad daylight? Does it still happen then?

Yes it happens in all lighting conditions.


Kallum.

 

[Recognition]

Ah ok. Slow motion will strobe for me indoors under fluorescent dimmable lighting or led lights but fine outside in daylight.

Does regular video have the same problem?

 

[Kal-037]

Ah ok. Slow motion will strobe for me indoors under fluorescent dimmable lighting or led lights but fine outside in daylight.

Does regular video have the same problem?

No, it works perfectly. So you have an X too?

 

[Recognition]

No, it works perfectly. So you have an X too?

Yea I do, just trying to get an understanding of why yours is doing that!
Hope Apple can help you resolve the issue

 

[Kal-037]

I need to correct my post before... I just used it in daylight and saw no issue this time. With other cameras I have no issue... with using the iPhone X in those kind of LED white lights... can that cause my issue?
[doublepost=1514398206][/doublepost]

Yea I do, just trying to get an understanding of why yours is doing that!
Hope Apple can help you resolve the issue

maybe I won’t go into Apple then, if this is a normal issue that occurs in LED and certain lights, I’ll skip the hour drive to Apple.

 

[Vermifuge]

Please post you findings after visiting the Apple store. I would be surprised if it was a hardware issue. Your examples are indicative of electrical grid flicker. You didn’t mention what region you live in. I would be curious if it was a light source even in daylight.

 

[Kal-037]

Please post you findings after visiting the Apple store. I would be surprised if it was a hardware issue. Your examples are indicative of electrical grid flicker. You didn’t mention what region you live in. I would be curious if it was a light source even in daylight.

I meant to rectify my post saying it happened in all lighting conditions, it didn’t happen during daylight and with non LED or regular lights either. Again I meant to adjust that post as it happened briefly in lower light by a lamp but not in daylight. My apologies.

 

[Vermifuge]

I need to correct my post before... I just used it in daylight and saw no issue this time. With other cameras I have no issue... with using the iPhone X in those kind of LED white lights... can that cause my issue?
[doublepost=1514398206][/doublepost]
maybe I won’t go into Apple then, if this is a normal issue that occurs in LED and certain lights, I’ll skip the hour drive to Apple.

I absolutely believe this is caused by the lighting and electrical grid in your area. It’s most common with CFLs and LEDs. The electrical grid sort of pulses in a frequency normally 50 or 60 hz. But it really depends on where you live. If you live in a 50hz region you’re video will be impacted everywhere. Bulbs on a dimmer switch may have a more pronounced effect because the dimming is a process of slowing that pulse.

 

[Kal-037]

I meant to rectify my post saying it happened in all lighting conditions, it didn’t happen during daylight and with non LED or regular lights either. Again I meant to adjust that post as it happened briefly in lower light by a lamp but not in daylight. My apologies.
After trying it again it appears to have only occurred in darker lighting and bright white LED.

 

[xraydoc]

I need to correct my post before... I just used it in daylight and saw no issue this time. With other cameras I have no issue... with using the iPhone X in those kind of LED white lights... can that cause my issue?
[doublepost=1514398206][/doublepost]
maybe I won’t go into Apple then, if this is a normal issue that occurs in LED and certain lights, I’ll skip the hour drive to Apple.

Yes. Sounds like just LED flicker/sync issue. Can see same effect if you slow-mo a plucked guitar string.

 

[Kal-037]

I absolutely believe this is caused by the lighting and electrical grid in your area. It’s most common with CFLs and LEDs. The electrical grid sort of pulses in a frequency normally 50 or 60 hz. But it really depends on where you live. If you live in a 50hz region you’re video will be impacted everywhere. Bulbs on a dimmer switch may have a more pronounced effect because the dimming is a process of slowing that pulse.

I’m in America currently, so it’s 60hz.
[doublepost=1514400809][/doublepost]Thank you for the help everyone. I truly appreciate your time and knowledge.


Kallum.

 

[Vermifuge]

Yes. Sounds like just LED flicker/sync issue. Can see same effect if you slow-mo a plucked guitar string.

Actually that’s a totally different process. The vibrations you see are due to a rolling shutter. Most mobile phones and action cams use a cheaper rolling shutter vs a global shutter like those found on high end digital cameras or SLRs with a physical shutter.

The waves you see are because the imaging sensor moves normally in series (normally top to bottom or bottom to top) firing one line of pixels at a time. There are videos that properly explain this better than I can on a forum post. Regardless, this isn’t due to the frequency of the power grid.

EDIT. Rolling shutter might manifest in a black line that seemingly moves from top to bottom or vice versa as you record or preview video when the power grid is out of sync.


[doublepost=1514401059][/doublepost]

I’m in America currently, so it’s 60hz.
[doublepost=1514400809][/doublepost]Thank you for the help everyone. I truly appreciate your time and knowledge.


Kallum.

Try getting your hands on a vintage filament style ( sometimes referred to as an Edison bulb) light bulb. Use that as your light source and I would take bets that your problem goes away.

 

[xraydoc]

Actually that’s a totally different process. The vibrations you see are due to a rolling shutter. Most mobile phones and action cams use a cheaper rolling shutter vs a global shutter like those found on high end digital cameras or SLRs with a physical shutter.

The waves you see are because the imaging sensor moves normally in series (normally top to bottom or bottom to top) firing one line of pixels at a time. There are videos that properly explain this better than I can on a forum post. Regardless, this isn’t due to the frequency of the power grid.

EDIT. Rolling shutter might manifest in a black line that seemingly moves from top to bottom or vice versa as you record or preview video when the power grid is out of sync.


[doublepost=1514401059][/doublepost]

Try getting your hands on a vintage filament style ( sometimes referred to as an Edison bulb) light bulb. Use that as your light source and I would take bets that your problem goes away.

Yes, the guitar string has nothing to do with the power grid. But was just using it as an example of out-of-sync video artifacts. Either way, I don’t think the OP’s phone is defective.

 

[Vermifuge]

@op what are you video recording settings? 4K 60fps? Have you tried 24 FPS, or maybe 1080p 30 FPS?