92 lines
3.0 KiB
Python
Executable File
92 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python
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"""Video Thumbnail Generator
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Usage:
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./generator <video> <interval> <width> <height> <columns> <output>
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./generator (-h | --help)
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./generator --version
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Options:
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-h --help Show this screen.
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--version Show version.
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<video> Video filepath.
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<interval> Interval em seconds between frames.
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<width> Width of each thumbnail.
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<height> Height of each thumbnail.
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<columns> Total number of thumbnails per line.
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<output> Output.
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"""
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from docopt import docopt
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from moviepy.editor import VideoFileClip
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from PIL import Image
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from click import progressbar
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import glob, os, random, shutil, math, tempfile
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TMP_FRAMES_PATH = tempfile.mkstemp()[1]
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def generate_video_thumbnail(args):
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videoFileClip = VideoFileClip(args['<video>'])
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interval = int(args['<interval>'])
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size = (int(args['<width>']), int(args['<height>']))
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outputPrefix = get_output_prefix()
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generate_frames(videoFileClip, interval, outputPrefix, size)
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columns = int(args['<columns>'])
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output = args['<output>']
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generate_sprite_from_frames(outputPrefix, columns, size, output)
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def generate_frames(videoFileClip, interval, outputPrefix, size):
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print "Extracting", int(videoFileClip.duration / interval), "frames"
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frameCount = 0
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with progressbar(range(0, int(videoFileClip.duration), interval)) as items:
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for i in items:
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extract_frame(videoFileClip, i, outputPrefix, size, frameCount)
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frameCount += 1
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print "Frames extracted."
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def extract_frame(videoFileClip, moment, outputPrefix, size, frameCount):
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output = outputPrefix + ("%05d.png" % frameCount)
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videoFileClip.save_frame(output, t=int(moment))
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resize_frame(output, size)
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def resize_frame(filename, size):
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image = Image.open(filename)
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image = image.resize(size, Image.ANTIALIAS)
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image.save(filename)
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def generate_sprite_from_frames(framesPath, columns, size, output):
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framesMap = sorted(glob.glob(framesPath + "*.png"))
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images = [Image.open(filename) for filename in framesMap]
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masterWidth = size[0] * columns
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masterHeight = size[1] * int(math.ceil(float(len(images)) / columns))
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finalImage = Image.new(mode='RGBA', size=(masterWidth, masterHeight), color=(0,0,0,0))
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merge_frames(images, finalImage, columns, size, output)
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def merge_frames(images, finalImage, columns, size, output):
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line, column = 0, 0
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for image in images:
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locationX = size[0] * column
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locationY = size[1] * line
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finalImage.paste(image, (locationX, locationY))
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column += 1
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if column == columns:
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line += 1
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column = 0
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finalImage.save(output, transparency=0)
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shutil.rmtree(TMP_FRAMES_PATH, ignore_errors=True)
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print "Saved!"
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def get_output_prefix():
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if not os.path.exists(TMP_FRAMES_PATH):
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os.makedirs(TMP_FRAMES_PATH)
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return TMP_FRAMES_PATH + ("%032x_" % random.getrandbits(128))
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if __name__ == "__main__":
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arguments = docopt(__doc__, version='0.0.1')
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generate_video_thumbnail(arguments)
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