Background Image (Movie clip) appearing purple I want to add a video as a background "image" in blender 2.8 to match my camera movement. Blender is however only displaying a purple solid (like when the source file cannot be found). I've tried multiple videos, both as mp4s and image sequences (png). All of them do not work.

Background images work as normal, so this issue is only with videos.

Update: Apparently, this issue was just related to my working file. I could just copy all my objects to a new .blend file where everything worked as it should. I would still be interested in an answer though.
Pink always mean that the image used is missing or cannot be displayed. 

If the frame you are trying to use does not exist in your video file you can instruct blender where to start the video file.

as described in this link:

How can I make a &quot;Movie Clip&quot; node start at a certain frame of the scene?

use the frame, start frame and offset for the video or image sequence.

 



Now why would your video be missing the first frame?

It is likely that you are dealing with video that has been compressed with an interframe codec using P or B frames and the reference keyframe at the beginning of the Group of Pictures is missing or cannot be read, so the first image displayed is the first keyframe of the next GOP. For more info on this read: https://www.bhphotovideo.com/explora/video/tips-and-solutions/compression-a-basic-understanding