What are the video transfer rates on different FPS settings?
488 8 2019-2-18
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Raphael75
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Hello there :-)

I went from the spark to the (mavic) air... now some more technically questions come up about the video quality the Air delivers...

I googled around, but couldn't find the answer to my question, or, I'm just searching the wrong way ^^

Everywhere I find the different resolutions and FPS possibilities... but nowhere I get a grid/map/graph with the Mbps per different frame rate and resolution.
Now I'm not even sure my question is legit...

It states it records up to 100Mbps, ok, but at what res & fps settings?

Is 1080p@120fps streaming to the SD card with 100Mbps?
Is 1080p@60fps streaming at the same speed? This would mean the image quality is higher at 60fps than 120fps... if both on 100Mpbs...

Even if it sounds logic that 1080p@60fps needs (roughly) twice less data than @120fps, it MIGHT get some sense if it still @60fps streams with 100Mbps, getting more pixel information or sort of... not sure if what I'm trying to answer to makes sense :-)

Many thanks in advance for your kind help

Cheeers from Belgium
2019-2-18
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AlansDronePics
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Frame rate is just that and  not tied to resolution or data rate.
Resolution is just that and not tied to frame rate or data rate.
Data rate is just that and is not tied to frame rate or resolution.
This is why you haven't  found the answer you are looking for by googling. Google frame rate, though it is pretty obvious what it means.
Do the same for resolution of an image. A video is a series of still images.
Do the same for bit depth of an image.
You will then understand how the 3 components work together and why you should read DJIs information.

However, a video camera will have those values stated by the manufacturer, DJI in your case.
2019-2-18
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Raphael75
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AlansDronePics Posted at 2-18 09:46
Frame rate is just that and  not tied to resolution or data rate.
Resolution is just that and not tied to frame rate or data rate.
Data rate is just that and is not tied to frame rate or resolution.

thnx for your answer, but... not sure I understand that explanation :-)

They might not being tied together, but if you shoot at 1080p@120FPS, the data rate will be doubled compared to a 1080p@60FPS (as the number of images saved are twice in number), or is the quality the impacted and there will be more 'artefacts' on a 120FPS video as the data rate for 60FPS will have more room than on 120FPS....?

Now, reading DJI information, ok, but... where? I didn't find any related answer to my questioning about... or I simply don't get it

tia
2019-2-18
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Raphael75
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plz delete (double posting by mistake)
2019-2-18
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Raphael75
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plz delete (double posting by mistake)
2019-2-18
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yuft gtdr
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That was mesmerizing. So many crows.
2019-2-18
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DJ-MA
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Hi Raphael, this seems like a question that was addressed here: https://forum.dji.com/thread-131316-1-1.html Hope that helps
2019-2-18
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Aardvark
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Record a file at each resolution. Then look at the properties/detail of each file on PC, it displays the data rate there.
2019-2-18
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Raphael75
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DJ-MA Posted at 2-18 13:10
Hi Raphael, this seems like a question that was addressed here: https://forum.dji.com/thread-131316-1-1.html Hope that helps

THIS!!!! Many thnx dear DJ-MA, that was helpfull enough

Kind regards!
cheers
2019-2-18
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