如何查找和删除重复视频(.mp4)文件？

Question

我有16,000+短视频剪辑，其中有许多与人眼完全一样，但如果你仔细检查，你会发现，其中一个或另一个可能有一个额外的1秒(或更少)的持续时间在开始或结束。

我已经尝试过几种方法，但在寻找副本方面没有取得任何成功。您可能会认为比较确切的字节大小就足够了，因为字节太小了。但是没有！之所以不这样做，是因为在视频剪辑的开头或结尾可能有一些额外的(或非额外的)毫秒。这导致它们是不同的和不相同的，从而导致使用“字节比较”结果的任何重复查找器都没有重复的结果。

虽然大部分视频剪辑与其他视频片段完全一样，但由于在比较.mp4文件的开头或结尾有几毫秒的差异，我使用的任何副本都不存在。

有人知道我如何在找到这些短视频剪辑.mp4文件的副本方面取得成功吗？他们平均每个大约30秒，但它只有几毫秒的差异，密切相比，另一个。在人眼看来，这是完全一样的，所以我看到的是复制品，但我不想单独观看和比较16,000+视频剪辑。

有什么建议吗？

我对我的问题找到了一个很好的工作答案，你能让我回答吗？

..。似乎我不能等它停下来.

Answer 1

我也有同样的问题，所以我写了程序。

问题是我有不同格式和分辨率的视频，所以我需要对每个视频帧进行散列并进行比较。

你只需改变顶部的目录，你就可以走了。

from os import path, walk, makedirs, rename
from time import clock
from imagehash import average_hash
from PIL import Image
from cv2 import VideoCapture, CAP_PROP_FRAME_COUNT, CAP_PROP_FRAME_WIDTH, CAP_PROP_FRAME_HEIGHT, CAP_PROP_FPS
from json import dump, load
from multiprocessing import Pool, cpu_count

input_vid_dir = r'C:\Users\gokul\Documents\data\\'
json_dir = r'C:\Users\gokul\Documents\db\\'
analyzed_dir = r'C:\Users\gokul\Documents\analyzed\\'
duplicate_dir = r'C:\Users\gokul\Documents\duplicate\\'

if not path.exists(json_dir):
    makedirs(json_dir)

if not path.exists(analyzed_dir):
    makedirs(analyzed_dir)

if not path.exists(duplicate_dir):
    makedirs(duplicate_dir)


def write_to_json(filename, data):
    file_full_path = json_dir + filename + ".json"
    with open(file_full_path, 'w') as file_pointer:
        dump(data, file_pointer)
    return


def video_to_json(filename):
    file_full_path = input_vid_dir + filename
    start = clock()
    size = round(path.getsize(file_full_path) / 1024 / 1024, 2)
    video_pointer = VideoCapture(file_full_path)
    frame_count = int(VideoCapture.get(video_pointer, int(CAP_PROP_FRAME_COUNT)))
    width = int(VideoCapture.get(video_pointer, int(CAP_PROP_FRAME_WIDTH)))
    height = int(VideoCapture.get(video_pointer, int(CAP_PROP_FRAME_HEIGHT)))
    fps = int(VideoCapture.get(video_pointer, int(CAP_PROP_FPS)))
    success, image = video_pointer.read()
    video_hash = {}
    while success:
        frame_hash = average_hash(Image.fromarray(image))
        video_hash[str(frame_hash)] = filename
        success, image = video_pointer.read()
    stop = clock()
    time_taken = stop - start
    print("Time taken for ", file_full_path, " is : ", time_taken)
    data_dict = dict()
    data_dict['size'] = size
    data_dict['time_taken'] = time_taken
    data_dict['fps'] = fps
    data_dict['height'] = height
    data_dict['width'] = width
    data_dict['frame_count'] = frame_count
    data_dict['filename'] = filename
    data_dict['video_hash'] = video_hash
    write_to_json(filename, data_dict)
    return


def multiprocess_video_to_json():
    files = next(walk(input_vid_dir))[2]
    processes = cpu_count()
    print(processes)
    pool = Pool(processes)
    start = clock()
    pool.starmap_async(video_to_json, zip(files))
    pool.close()
    pool.join()
    stop = clock()
    print("Time Taken : ", stop - start)


def key_with_max_val(d):
    max_value = 0
    required_key = ""
    for k in d:
        if d[k] > max_value:
            max_value = d[k]
            required_key = k
    return required_key


def duplicate_analyzer():
    files = next(walk(json_dir))[2]
    data_dict = {}
    for file in files:
        filename = json_dir + file
        with open(filename) as f:
            data = load(f)
        video_hash = data['video_hash']
        count = 0
        duplicate_file_dict = dict()
        for key in video_hash:
            count += 1
            if key in data_dict:
                if data_dict[key] in duplicate_file_dict:
                    duplicate_file_dict[data_dict[key]] = duplicate_file_dict[data_dict[key]] + 1
                else:
                    duplicate_file_dict[data_dict[key]] = 1
            else:
                data_dict[key] = video_hash[key]
        if duplicate_file_dict:
            duplicate_file = key_with_max_val(duplicate_file_dict)
            duplicate_percentage = ((duplicate_file_dict[duplicate_file] / count) * 100)
            if duplicate_percentage > 50:
                file = file[:-5]
                print(file, " is dup of ", duplicate_file)
                src = analyzed_dir + file
                tgt = duplicate_dir + file
                if path.exists(src):
                    rename(src, tgt)
                # else:
                #     print("File already moved")


def mv_analyzed_file():
    files = next(walk(json_dir))[2]
    for filename in files:
        filename = filename[:-5]
        src = input_vid_dir + filename
        tgt = analyzed_dir + filename
        if path.exists(src):
            rename(src, tgt)
        # else:
        #     print("File already moved")


if __name__ == '__main__':
    mv_analyzed_file()
    multiprocess_video_to_json()
    mv_analyzed_file()
    duplicate_analyzer()