@mon3om said:
Discover by country
Hey TMDB folks, I recently added an advanced search functionality to my app where it should discover movies by country
(for example discover only movies where France "FR" is in the list of production_countries).
I've heard of region, release_type and release dates but I couldn't succeed in combining them to get what I want.
Here is a request I used: > https://api.themoviedb.org/3/discover/movie?api_key=api_key&language=en-US&region=FR&with_release_type=1
but it returned movies where France is not a part of production countries.
So help me guys and thanks.

Filtering by Country of Origin or Country of Production is not possible.
But filtering by the Original Language is possible.
In the case of India, the &with_original_language parameter can be added.
Example

https://api.themoviedb.org/3/discover/movie?api_key=THE_KEY&language=en-US&primary_release_year=2020&with_original_language=hi|kn|ml|ta|te

But beware of duplicity:
A Language with Multiple Countries

en  English 6 (AU+CA+GB+IE+NZ+US)
fr  French 2 (CA+FR)
de  German 3 (AT+CH+DE)
ms  Malay 2 (MY+SG)
zh  Mandarin 3 (CN+HK+TW)
pt  Portuguese 2 (BR+PT)
es  Spanish 2 (ES+MX)

A Country with Multiple Languages

CA  Canada 2 (en+fr)
CN  China 2 (cn+zh)
IN  India 5 (hi+kn+ml+ta+te)
NO  Norway 2 (nb+no)
ES  Spain 4 (ca+es+eu+gl)