fps – Blender Output Is In Slow Motion And Back End Of Video Is Missing

I have a letterbox video where I get black boxes on all sides of it. I figured I could use blender to fix the issue. I have successfully done that but I am having an issue: Blender isn’t loading the entire video. The file has the correct amount of time listed but either the video stream is truncated compared to the audio or it appears the same length but the end of the stream isn’t the end of the video. When I play the output video, I get a slow motion video with the audio playing at normal speed. When I get to the end of the video file, the video isn’t at the end but the audio is. Blender does seem to be showing 29.97 fps as it should. What is going on and how do I fix it?