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Blinking video on phantom 4
196 14 2017-10-11 04:11:42
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StrelokL2
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Flight distance : 80320
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Hi.
I have a Phantom 4.
firmware 1.9.2 and 602
iphone 5s and ipad 3 mini

The camera does video with continuous blinking and flickers.
On any modes - auto or manual. With AE lock On and OFF.
Change white balance - auto or manual. Blinking.
Always blinking on all my videos with PAL or NTSC, Auto or manual exposition, white balance, etc.
Any idea?






2017-10-11 04:11:42
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StrelokL2
lvl.2
Flight distance : 80320
Russian Federation
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youtube stabilize blinking - in original video its more strong
2017-10-11 04:27:03
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Aardvark
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Flight distance : 83138
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StrelokL2 Posted at 2017-10-11 04:27
youtube stabilize blinking - in original video its more strong

There's  also a bit of interference at about 28s on the first video, was that from the SD card ?

At the start of the third video I can see some darker banding which I believe is prop' shadows  reflecting on the filter. That can be partly reduced or avoided by tilting gimbal down a bit amongst other things. Do you use automatic settings on camera regarding shutter speed, with no ND (Neutral Density) filters ?

The best thing to aim for is setting the shutter speed to 'about' half the frame rate, and using ND filters to reduce the light coming into the fixed aperture P4 camera. Locking the WB either manually or one of the pre-sets (Usually 'Cloudy' in UK here :-) ).

For example I might use an ND4 filter (cloudy day), 4k @ 30 fps, and manually set shutter to 1/60th (maybe a bit slower if needed), ISO to 100 (maybe 200 if needed), the target being to get the EV shown on the DJI Go 4 screen to be close to or just above 'zero'. This generally results in nicely detailed and contrasted/coloured video (along with smooth panning, flight speed etc). In post editing I usually pull up the colour saturation a little  bit, and perhaps play about with some of the levels. Others may be able to advise regarding sharpness and contrast setting, I normally just go with 0 for these and D-Cinelike for colour.

I am not a professional photographer or videographer, this is just what I think works well for me :-)
2017-10-11 06:44:51
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DJI Diana
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Was that from SD card? Could you please upload some original video from the SD card to the Dropbox for analysis? Please provide me with a Dropbox link to download them.
2017-10-11 19:54:54
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StrelokL2
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DJI Diana Posted at 2017-10-11 19:54
Was that from SD card? Could you please upload some original video from the SD card to the Dropbox for analysis? Please provide me with a Dropbox link to download them.

yes this videos directly from sd card and not edited


https://drive.google.com/open?id=0BxbyHPySPhgFR2J5RFQ4VUY5TWs

https://drive.google.com/open?id=0BxbyHPySPhgFaFhETFhRanBxcnM

https://drive.google.com/file/d/ ... mM/view?usp=sharing
2017-10-11 22:37:45
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StrelokL2
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Flight distance : 80320
Russian Federation
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https://www.dropbox.com/s/c9b24hio673nxr1/DJI_0451.MOV?dl=0

https://www.dropbox.com/s/97si4y786ihkdl4/DJI_0463.MOV?dl=0

https://www.dropbox.com/s/lcki0tb5kwiy678/DJI_0889.MOV?dl=0
2017-10-11 23:37:27
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DJI Diana
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StrelokL2 Posted at 2017-10-11 22:37
yes this videos directly from sd card and not edited

They are 4K videos, right? Try to reset the Camera Settings,  then record a 1080P video, see if it is the same. Besides, for the 4K videos, try to other Media Players or Computers, see if it is better.
2017-10-11 23:57:09
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StrelokL2
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DJI Diana Posted at 2017-10-11 23:57
They are 4K videos, right? Try to reset the Camera Settings,  then record a 1080P video, see if it is the same. Besides, for the 4K videos, try to other Media Players or Computers, see if it is better.

no matter 4k or 1080p - blinking with any resolutions
2017-10-12 00:14:07
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Montfrooij
Captain
Flight distance : 1172
Netherlands
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I downloaded some of your files.
They do show some flickering indeed.
Tried various players and all behave the same.
2017-10-12 02:56:21
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StrelokL2
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Flight distance : 80320
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Montfrooij Posted at 2017-10-12 02:56
I downloaded some of your files.
They do show some flickering indeed.
Tried various players and all behave the same.

the main problem when I add contrast and speed in AE
blinking increases, makes more stronger
and final edited video is not good
2017-10-12 04:24:53
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Montfrooij
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StrelokL2 Posted at 2017-10-12 04:24
the main problem when I add contrast and speed in AE
blinking increases, makes more stronger
and final edited video is not good

I can imagine. That will amplify the flickering.
I am not sure what causes this.
Is your firmware etc. up to date?
2017-10-12 04:29:52
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StrelokL2
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Montfrooij Posted at 2017-10-12 04:29
I can imagine. That will amplify the flickering.
I am not sure what causes this.
Is your firmware etc. up to date?

RC - 1.9.2
drone - V01.02.0602
dji go 4 - 4.1.3 ( also try with 4.1.5 ,4.1.9,  4.1.12)
2017-10-12 22:08:27
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Montfrooij
Captain
Flight distance : 1172
Netherlands
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StrelokL2 Posted at 2017-10-12 22:08
RC - 1.9.2
drone - V01.02.0602
dji go 4 - 4.1.3 ( also try with 4.1.5 ,4.1.9,  4.1.12)

Hope DJI can help you. I have really no idea.
2017-10-12 22:46:26
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StrelokL2
lvl.2
Flight distance : 80320
Russian Federation
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DJI Diana Posted at 2017-10-11 23:57
They are 4K videos, right? Try to reset the Camera Settings,  then record a 1080P video, see if it is the same. Besides, for the 4K videos, try to other Media Players or Computers, see if it is better.

hardware or sortware problem? all of range resolutions blinking
2017-10-15 22:21:31
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DJI Diana
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StrelokL2 Posted at 2017-10-15 22:21
hardware or sortware problem? all of range resolutions blinking

I've forwarded these videos to our engineers for analysis, will keep you updated!
2017-10-16 00:09:23
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