I see this page on how to do this with images numerically. But I have a directory of images that look like this for example:
ADAM SANDLER.jpg
JOHN DOE.jpg
SAM SMITH.jpg
I want to create a video slideshow from all of the images in this directory, sorted alphabetically.
Is there any way to do this?
EDIT
In the end, I'm trying to create a vertical video to post on Instagram. These photos are portraits so it will need to be a "vertical" video. It seems FFMPEG is having issues with this, at least playing the video in Quicktime doesn't seem to be working. It needs to be a 15 second video, and there are 25 images.
This is the command I'm running, and it's just appearing black when I open it in Quicktime. When I open in VLC it's playing but only shows the first couple frames.
ffmpeg -r 1 -i img%03d.jpg -c:v libx264 -pix_fmt yuv420p out.mp4