When i wanna render something thats more than a minute long, it freezes in the middle of rendering. I don’t have this issue with rendering small vids. Does anyone know how or why it happens?
Is there a popup at the top of the screen or under the mouse cursor?
Also CPU? GPU? OS? Blender Version?
Dont render video. Render the individual frames, then join them together once they are all rendered. This stops blender from easily running out of memory, and it lets your carry on rendering from the last frame if there is a crash.
What I experienced is a lack of RAM.
The lack of VRAM on the GPU has caused problems using shared memory together.
Sometimes 100 frames, sometimes 30 frames were rendered,
and it was a phenomenon that did not progress to a pause phase. 
Rendering with a frame image and proceed again from where it stopped