How to convert 4k video to portrait mode without sacrificing quality.?

I film on my 4k dslr obviously in landscape mode but sometimes I like to show some of my videos on my TikTok and I like full screen and not having those black borders on the top and bottom and so in order to be full screen it has to be portrait I downloaded a converter app and the video lost almost all of its quality. It was like 360p afterwards. Is there an app or something where I don't have to film in portrait mode all the time. 

3 Answers

  • keerok
    Lv 7
    1 month ago

    There are some video converters that can rotate the whole video and crop the image to your liking. Some are even available to download for free.

  • Sumi
    Lv 7
    1 month ago

    The resolution of a 4K video is about 8MP per frame.  In order to fill the frame after rotating the image ninety degrees, you'll end up with an image with a measurement of 2,160 pixels horizontally, and 1,220 pixel vertically which comes out to about 2.6MP per image.  This is higher than your reported resolution of 360p (480×360).

    You say that the resolution was "like" 360p.  So what exactly was it?  Saying "like" tells me you didn't actually get a precise measurement.

    To answer your question, there is no way to get better resolution when you rotate the image with a 4K camera shooting in a 16:9 aspect ratio.  If you were using a camera with an aspect ratio that was closer to square such as 3:2, then the final resolution would be better.

  • Anonymous
    1 month ago

    Why not just use your cell phone to shoot video for Tik Tok.

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