This script moves the largest file in each folder in the directory that it's run from into that directory.

move_videos.py

'''
This script moves the largest file from each subdirectory into the 
same directory that the script is run from.

Before:
/root
	/episode1
		e1.avi
		...
	/episode2
		e2.avi
		...
		
After:
/root
	e1.avi
	e2.avi
'''

import os, os.path
import shutil

def get_largest_file(dirtocheck):
	'''
	Returns the largest file inside dirtocheck, or None if no files exist.
	'''
	largest = None
	for root, _, files in os.walk(dirtocheck):
		for f in files:
			fullpath = os.path.join(root, f)
			if largest == None or os.path.getsize(fullpath) > os.path.getsize(largest):
				largest = fullpath
	return largest

# Get the current directory the script is being run in
current = os.path.dirname(os.path.realpath(__file__))

# Iterate through folders in the current directory. Each folder should contain
# on episode, which will be moved to the current directory. After moving, delete
# the folder it was moved from.
for subdir, dirs, files in os.walk(current):
	# Ignore subdir if it's the same as current
	if subdir != current:
		largest = get_largest_file(subdir)
		shutil.move(largest, os.getcwd())
		shutil.rmtree(subdir)
		
# remove script file when finished
os.remove("move_videos.py")