short movie with a jpeg not exporting

Recently, I've been working on a simple project. I put a jpeg into the timeline, creating a sequence and animated the movement and scale of said jpeg. I needed an AI voiceover so I recorded it with a program for cliping games. I put all the clips into my project and unlinked the video from the audio. I got down to exporting the project and it went smoothly. However, the moment I opened the exported video, only audio was playing and the video didn't appear. An error popped up, saing that there was an issue with playing the video. I have tried exporting with different formats but still nothing. Later on I got another, more specific error. It said that I was missing some sort of codec files?