Generate a composite tiled video from multiple input videos

make_tiled_composite_video.py

#!/usr/bin/env python
"""
Given a list of video files, creates a tiled output video with each 
input video playing simulutaneously with mixed audio.
The result is something like a composite security camera feed, or the 
"Brady Bunch" opening credits.

DISCLAIMER: The author holds no responsibility for your actions if you 
become criminally insane from watching all nine Puppet Master films 
simultaneously. You have been warned.
"""

import os
from moviepy.editor import *
from moviepy.audio.fx import *

W, H = (1920, 1080)
base_dir = "/junk/torrents/puppet master 1-9 avi dvdrip horror movie pack"
video_files = \
    ["Puppet Master.avi",
     "Puppet Master 2 - His Unholy Creations.avi",
     "Puppet Master 3 - Toulon's Revenge.avi",
     "Puppet Master 4 - The Demon.avi",
     "Puppet Master 5 - The Final Chapter.avi",

     "Puppet Master 6 - Curse of the Puppet Master- " +
     "The Human Experiment.avi",

     "Puppet Master 7 - Retro Puppet Master.avi",
     "Puppet Master 8 - The Legacy.avi",
     "Puppet Master 9 - Puppet Master vs Demonic Toys.avi",
    ]

#subclip = (360, 362)
subclip = None
columns = 3
video_clips = []
for vf in video_files:
    #print "Adding " + vf
    vf_fullpath = os.path.join(base_dir, vf)
    clip = VideoFileClip(vf_fullpath)
    if (subclip):
        clip = clip.subclip(subclip[0], subclip[1])
    video_clips.append(clip)

rows = len(video_clips) / columns
print "Rows %i, Columns %i" % (rows, columns)
thumbnail_clips = []
for r in range(rows):
    for c in range(columns):
        i = c + (r*columns)
        offset = (W * float(c) / columns, H * float(r) / rows)
        print i, c, r, offset
        thumbnail_clips.append((video_clips[i].
                                resize((W/rows, H/columns)).
                                set_pos(offset))
        )

"""
transparent_clips = []
for v in video_clips:
    transparent_clips.append(
        v.set_opacity(1.0/len(video_clips)).
        resize(width=W, height=H)
    )
"""

video = CompositeVideoClip(thumbnail_clips, size=(W, H))
#video = CompositeVideoClip(transparent_clips, size=(W, H))

video.to_videofile("thepuppetmasters.mp4", fps=24, codec='libx264')
#'libvpx'
#'mpeg1video'

Thank you, very helpful for me.

it seems that there is a bug^
resize((W/rows, H/columns))
For me, correct works if change to this:
resize((W/columns, H/rows))