Helmut Ruch
lvl.3
Germany
Offline
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I once tested the horizontal field of view of the OA (1) with lens correction and Rocksteady on and found, that under this conditions only about 3000 of the 4000 horizontal pixels are used. The rest is buffer for the stabi. Which means, that a stabilized 4k video consists of about 40% of interpolated pixel, pixel without real informations. The same for the data stream: 40 MBit/s of the captured 100 MBit/s consists of hot air, interpolated data. For the OA the much better way is to capture in 2k7 and scale the video up to 4k in the post, if someone realy needs this. 2k7 uses the 100 MBit/s stream much more effectiv then 4k.
For the OA 3 (and OA 2) if have not found a written statement about the sensor resolution from DJI up to date. Somebody here knows more?
But an other aspect to 4k: The resolution of our eyes is around one bow second (1/60 of a degree) in young years. On a "normal" distance of view, min. 2 times screen diagonal, our eyes are not even able to recognize single pixels in 720p. 4k is complete overkill.
And some remarkes to YT: Youtube treats small channels with low trafik and uploads in 1080p very bad. Normaly you get only 2,65 MBit/s of videobandwith (VP09) with 1080p, not enough for critical scenes. If you take the same stuff and blow it up to 1440p bevor you upload to YT, you get much more bandwidth even in the 1080p version. So, never upload 1080p to YT... |
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