Will convert the file named 'video.mp4' (in the same directory), read only every 100th frame (speeds up things) and save as 'output.pdf' (in the same directory). Verbose mode -v is highly recommended ...

Does your work involve using different document formats, with PDF being the predominant one? Well, if it does, here's how to convert a document to PDF on iOS. Natively and using third-party apps.