YOU SAID:

I watched the video in my room

INTO JAPANESE

部屋で動画見た

BACK INTO ENGLISH

i watched the movie in my room

INTO JAPANESE

私は自分の部屋で映画を見ました

BACK INTO ENGLISH

i watched a movie in my room

INTO JAPANESE

私は自分の部屋で映画を見ました

BACK INTO ENGLISH

i watched a movie in my room