Similar problem noticed with a 3 track video of about 8min duration. Memory and swap were both filled upon rendering with the export eventually failing.
As a workaround, I attached a 2TB drive formatted for swap and engaged swapon. Then tried rendering again. Memory usage reached about 2GB (IIRC) before the export reported completion. However the resultant video file was empty (0b).
Finally, split the video into 2 parts for rendering and created a new project to splice the two bits together. That worked perfectly as if the previous problem never happened. No memory chewing.
Similar problem noticed with a 3 track video of about 8min duration. Memory and swap were both filled upon rendering with the export eventually failing.
As a workaround, I attached a 2TB drive formatted for swap and engaged swapon. Then tried rendering again. Memory usage reached about 2GB (IIRC) before the export reported completion. However the resultant video file was empty (0b).
Finally, split the video into 2 parts for rendering and created a new project to splice the two bits together. That worked perfectly as if the previous problem never happened. No memory chewing.