1

I have been editing a video which has rendered fine up until recently, I had it in a .mp4 format on a windows machine editing using wevideo, and I sent it to my friend who edited it on a mac, I think using aftereffects, and converted it to a .mov and now it has this strange effect, but only when I download it to the local machine (by the way the black bars are fine, what I am confused about are the horizontal lines):

before: Before:

on my phone after:

enter image description here

on my computer after:

enter image description here

What could be going on and how should I fix it?

thanks!

  • 1
    Wrong encode settings? See @JohnManly's answer. – p2or May 19 '15 at 18:38
4

Those horizontal lines you're seeing are what you would call Interlacing and it's usually done in an attempt to increase a video's frame rate without using more bandwidth (in other words, make it play smoother and take up less space). You can easily get rid of this by running your video through a program like Handbrake and using their "Decomb" filter.

There are other, more advanced methods to clean this up as well.

I personally use Davinci Resolve and I've read that you can even do it in VLC Media Player, but I think handbrake is the quickest and easiest way to accomplish deinterlacing your video.

| improve this answer | |
  • 1
    @nosyarg instead of encoding the video again thus loosing more detail and quality you should tell your friend to pick a better output format, progressive instead of interlaced if possible. While most programs should be able to detect interlaced content and display it without combing, interlacing remains a crude hack from the CRT era. AFAIK interlaced formats have been dropped with the move to UHD. – LiveWireBT May 20 '15 at 7:50

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.