192 lines
7.3 KiB
Python
Executable File
192 lines
7.3 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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""" Author: Hendrik Schutter, localhorst@mosad.xyz
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Date of creation: 2022/01/22
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Date of last modification: 2022/08/25
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"""
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import os
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import platform
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import sys
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import time
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import subprocess
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import shlex
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import shutil
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import glob
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import PIL
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from PIL import Image
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from PIL import ImageFont
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from PIL import ImageDraw
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temp_dir = os.path.join(os.getcwd(), "_tempCodecVisualizer/")
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def create_temp_dir():
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try:
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os.mkdir(temp_dir)
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except OSError:
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print("Unable to create temp dir: %s" % temp_dir)
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sys.exit()
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def delete_temp_dir():
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try:
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shutil.rmtree(temp_dir)
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except OSError:
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pass
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def get_length(filename):
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result = subprocess.run(["ffprobe", "-v", "error", "-show_entries",
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"format=duration", "-of",
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"default=noprint_wrappers=1:nokey=1", filename],
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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return float(result.stdout)
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def get_codec(filename):
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result = subprocess.run(["ffprobe", "-v", "error", "-select_streams", "v:0",
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"-show_entries", "stream=codec_name",
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"-of", "default=noprint_wrappers=1:nokey=1", filename],
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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return str(result.stdout.decode("utf-8")).rstrip("\n")
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def extract_frame(video_file, time_offset, output_file):
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cmd = "ffmpeg -y -ss " + time.strftime('%H:%M:%S', time.gmtime(time_offset)) + ".00 -i " + str(video_file) + " -frames:v 1 " + str(output_file)
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devnull = open(os.devnull, 'w')
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subprocess.call(shlex.split(cmd),stdout=devnull, stderr=devnull)
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def get_font_path():
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if platform.system() == "Darwin":
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# Assume DejaVu to be installed via Homebrew
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path = "~/Library/Fonts/DejaVuSans-Bold.ttf"
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return os.path.expanduser(path)
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# Default platform: Linux
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path = "/usr/share/fonts"
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files = glob.glob(path + "/**/DejaVuSans-Bold.ttf", recursive = True)
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return files[0]
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def zoom_at(img, crop_factor):
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image_width, image_height = img.size
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img = img.crop((int(image_width/2) - int(image_width/crop_factor) / (crop_factor * 2), int(image_height/2) - int(image_height/crop_factor) / (crop_factor * 2),
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int(image_width/2) + int(image_width/crop_factor) / (crop_factor * 2), int(image_height/2) + int(image_height/crop_factor) / (crop_factor * 2)))
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return img.resize((int(image_width/crop_factor*2), int(image_height/crop_factor*2)), Image.Resampling.LANCZOS)
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def create_collage(images_A, images_B, statistics, output_file):
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image_width, image_height = images_A[0].size
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x_offset = int(image_width/15)
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y_offset = int(image_height/1.5)
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output_width = image_width *2 + x_offset
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output_height = image_height *4 + y_offset
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output_image = Image.new('RGB', (output_width, output_height))
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font_file = get_font_path()
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draw = ImageDraw.Draw(output_image)
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text = "codec visualizer"
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draw.text((x_offset, 0), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/10)))
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text = "reduced data size: " + str(statistics["compression_rate"]) + "%"
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draw.text((x_offset + image_width , int(image_height/18)), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/18)))
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text = str(statistics["codec"][0])
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draw.text((x_offset , int(image_height/18) * 5), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/25)))
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text = str(statistics["codec"][1])
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draw.text((x_offset + image_width , int(image_height/18) * 5), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/25)))
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text = str(statistics["filename"][0])
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draw.text((x_offset , int(image_height/18) * 7), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/25)))
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text = str(statistics["filename"][1])
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draw.text((x_offset + image_width , int(image_height/18) * 7), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/25)))
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text = str(statistics["size"][0])
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draw.text((x_offset , int(image_height/18) * 9), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/25)))
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text = str(statistics["size"][1])
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draw.text((x_offset + image_width , int(image_height/18) * 9), text,(255,255,255),font=ImageFont.truetype(font_file, int(image_width/25)))
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i = 0
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y = y_offset
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for row in range(4):
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output_image.paste(images_A[i], (int(x_offset/2), y))
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output_image.paste(images_B[i], (int(x_offset/2) + image_width, y))
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i += 1
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y += image_height
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i = 0
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y = y_offset
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crop_factor = 6
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for row in range(4):
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cropped_image = zoom_at(images_A[i], crop_factor)
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cropped_image_with, _ = cropped_image.size
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output_image.paste(cropped_image, (int(x_offset/2) + image_width - cropped_image_with , y))
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cropped_image = zoom_at(images_B[i].transpose(PIL.Image.Transpose.FLIP_LEFT_RIGHT), crop_factor)
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output_image.paste(cropped_image, (int(x_offset/2) + image_width, y))
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i += 1
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y += image_height
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output_image.save(output_file)
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def calc_compression_rate(size_A, size_B):
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if size_A == size_B:
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return 0
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if size_A > size_B:
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return int(100 - 100/size_A*size_B)
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if size_B > size_A:
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return int(100 - 100/size_B*size_A)
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def human_readable_size(size, decimal_places=2):
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for unit in ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB']:
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if size < 1024.0 or unit == 'PiB':
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break
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size /= 1024.0
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return f"{size:.{decimal_places}f} {unit}"
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def main():
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if(len(sys.argv) != 3):
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print("Bad usage!")
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print("Usage: python ./codec_analyzer.py file file")
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sys.exit()
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file_A = sys.argv[1]
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file_B = sys.argv[2]
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if (int(get_length(file_A)) != int(get_length(file_B))):
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print("video files have different lengths")
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sys.exit()
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video_lenght = int(get_length(file_A))
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delete_temp_dir()
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create_temp_dir()
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stills_timestamps = []
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stills_file_A = []
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stills_file_B = []
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stills_timestamps.append(int(video_lenght*0.15)) #don't get the intro
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stills_timestamps.append(int(video_lenght*0.33))
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stills_timestamps.append(int(video_lenght*0.50))
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stills_timestamps.append(int(video_lenght*0.75)) #don't get the outro
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for frame_timestamp in stills_timestamps:
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still_file_A = temp_dir + "A_"+ str(frame_timestamp) + ".tif"
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extract_frame(file_A, frame_timestamp, still_file_A)
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stills_file_A.append(Image.open(still_file_A))
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still_file_B = temp_dir + "B_"+ str(frame_timestamp) + ".tif"
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extract_frame(file_B, frame_timestamp, still_file_B)
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stills_file_B.append(Image.open(still_file_B))
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file_statistics = {
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"filename": [os.path.basename(file_A),os.path.basename(file_B)],
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"size": [human_readable_size(os.path.getsize(file_A)), human_readable_size(os.path.getsize(file_B))],
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"codec": [get_codec(file_A), get_codec(file_B)],
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"compression_rate": calc_compression_rate(os.path.getsize(file_A), os.path.getsize(file_B))
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}
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create_collage(stills_file_A, stills_file_B, file_statistics, "output.png")
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delete_temp_dir()
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if __name__ == "__main__":
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main() |