Best way to reduce file size of 4k video

Discussion in 'Digital Video' started by hajime, Jul 29, 2017.

  1. hajime macrumors 603

    Jul 23, 2007
    Hello, I took short 4K videos but when I tried to send it to my friend, I found that it is about 60M in size. Is there a good way to reduce the file size without losing the quality?
  2. Mikael H macrumors 6502a

    Sep 3, 2014
    Without reducing quality at all or without reducing quality much?
    The free HandBrake program may be of help but is kind of technical if you want good results.

    Waiting for iOS 11 and next-gen iDevices is a half-jocular answer, since they’ll use a better algorithm for compressing video than the one currently in use.
  3. kohlson macrumors 68000

    Apr 23, 2010
    HEVC is coming, but a few things (apps, OS, hardware, devices, viewers) need to happen before you can take advantage of it. It will happen, but if the past is any guide, it's probably longer than you want to wait.

    Handbrake is an easy way to optimize compression - recommended.

    Is there a reason you can't use Google Drive, or Dropbox, or iCloud Drive?
  4. HobeSoundDarryl macrumors 604


    Feb 8, 2004
    Hobe Sound, FL (20 miles north of Palm Beach)
    60M is pretty small for any video, 4K or not. Videos tend to end up at at least a few GBs for stuff like movies. If you are trying to email it, that is going to be too big for many email clients. But you can always store it in a Dropbox (or similar) folder and send a link to it via email.

    I'm guessing that it's already pretty compressed but, as others have offered, you can run it through Handbrake. If the 4K part is not so important, you could choose the :apple:TV3 preset to downres it to 1080p or the :apple:TV2 preset to downres it to 720p and that would likely reduce the file size (but probably still not to a size that could be reliably emailed).

    I'm thinking there's probably nothing you need to do but open a Dropbox (or similar) account, store what you have there and share a link with your friend. There's also the option of uploading it to a video service like Youtube, Vimeo or similar and then sharing a link to the video on such services. There's also the option of burning it to a disc or saving it on a USB drive and sending the physical media to them.
  5. hajime thread starter macrumors 603

    Jul 23, 2007
    If she is also using iPhone, is there a good way to transfer the file to her phone wirelessly?
  6. Mikael H macrumors 6502a

    Sep 3, 2014
  7. ChrisA macrumors G4

    Jan 5, 2006
    Redondo Beach, California
    What device is your friend going to use to view the video. Does he have a 4K TV set or monitor? Unless the video is going to be viewed on a 4K screen you should reduce the size to match his screen. In most cases it is pointless to have video ho=igher then 1080p unless you KNOW it will be viewed on a 4K screen Going from 4K to 1080p will cut the file size by a factor of 4X to 15M You could likely compress it farther

    Changing the size is much better then simply compressing

    On the Mac you can use the "Photos" app to export your video to a smaller size. After placing the video file into Photos just select it and use file->export

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