Answer:
Step 1: Export all images from the pdf using a screenshot tool (I used the built-in snip tool).
Step 2: Convert the music to an mp3.
Step 3: Combine everything together using ffmpeg.
Explanation:
The ffmpeg tool can perform many tasks. In this case, I added a filter configuration to create a nice crossfade effect. The tool has an infinite amount of options to achieve these results.
