Pdf to video (https://pdftovideo.ai/) generates a video with voice from a pdf of up to 80 pages.

Voice in 24 languages, 8 of which are in French.
Choice of format, duration up to 15 min, video background, subtitles (note: spaces added after apostrophes) and logo possible.

URL sharing, mp4 export and transcript export.

Free, no accounts required, and seems unlimited.

Test from Framework for the use of AI in education :

Test since IGSER report “Artificial intelligence in schools“: