背景
上传视频被判定重复
思考:什么原因导致判定重复呢?是不是文件的MD5?
方案一
往视频中加入一些二进制数据,但不影响视频的效果,从而改变视频的MD5值
结果:尝试了几次,都失败了。如果有对视频编码比较熟悉的大佬,可以提供相关帮助将不胜感激。
方案二
调整:增加水印,从而改变MD5值
MD5
import hashlib
KB = 1024
MB = KB * 1024
GB = MB * 1024
def md5(file_path):
with open(file_path, 'rb') as f:
md5_hash = hashlib.md5()
while True:
block = f.read(GB)
if not block:
break
md5_hash.update(block)
return md5_hash.hexdigest()
增加水印[1][2]
import cv2
def video_rewriter(source_path, target_path, logo_path, logo_size=None):
"""
"""
source_video = cv2.VideoCapture(source_path)
fps = source_video.get(cv2.CAP_PROP_FPS) # 帧率
frame_count = source_video.get(cv2.CAP_PROP_FRAME_COUNT) # 帧数
duration = frame_count / fps # 计算视频的时长(秒)
size = (int(source_video.get(cv2.CAP_PROP_FRAME_WIDTH)), int(source_video.get(cv2.CAP_PROP_FRAME_HEIGHT))) # 分辨率
print(f"视频时长为: {int(duration)}秒")
print(f"视频帧率为: {int(fps)}FPS")
print(f"视频总帧数: {int(frame_count)}")
print(f"视频分辨率: {size}" )
target_video = cv2.VideoWriter(target_path, cv2.VideoWriter_fourcc(*'mp4v'), fps, size)
image2 = cv2.imread(logo_path)
if logo_size:
# 调整水印大小(100,100)
image2 = cv2.resize(image2, logo_size)
# 获取logo的行列、通道数
rows, cols, channels = image2.shape
count_index = 0
while(source_video.isOpened()):
success, frame = source_video.read()
if success==True:
count_index +=1
if count_index % 100 ==0:
print(f"当前帧数:{count_index}, 总帧数: {int(frame_count)}")
# 从image1中切割出一个与image2大小相同的区域,作为ROI(Region of Interest)
roi = frame[0:rows, 0:cols]
# 将image2转化为灰度图像,以便于进行阈值化处理
image2gray = cv2.cvtColor(image2, cv2.COLOR_BGR2GRAY)
# ret阈值被忽略,mask二值化图像。大于254的值赋值为255,小于254的值赋值为0
ret, mask = cv2.threshold(image2gray, 254, 255, cv2.THRESH_BINARY)
# 按位取反操作,0变255,255变0
mask_reverse = cv2.bitwise_not(mask)
# 按位与操作,保留掩膜之后的背景
image1_background = cv2.bitwise_and(roi, roi, mask=mask)
# 按位与操作,保留掩膜之后的logo
image2_logo = cv2.bitwise_and(image2, image2, mask=mask_reverse)
# 将背景和logo叠加
result = cv2.add(image1_background, image2_logo)
frame[0:rows, 0:cols] = result
target_video.write(frame)
# cv2.imshow('frame',frame)
# if cv2.waitKey(1) & 0xFF == ord('q'):
# break
else:
break
print(f"当前帧数:{count_index}, 总帧数: {int(frame_count)}")
source_video.release()
target_video.release()
cv2.destroyAllWindows()
增加音频[2]
import moviepy.editor as mov
def set_music(audio_source_path, video_source_path, target_path):
'''
合成视频设置背景音乐函数
:return:
'''
print('开始添加背景音乐!')
# 初始化视频文件对象
clip = mov.VideoFileClip(video_source_path)
# 从某个视频中提取一段背景音乐
audio = mov.AudioFileClip(audio_source_path) # .subclip(0, 83)
# # 将背景音乐写入.mp3文件
# audio.write_audiofile(f'{base_path}/background.mp3')
# 向合成好的无声视频中添加背景音乐
clip = clip.set_audio(audio)
# 保存视频
# clip.write_videofile(video_source_path) # 源文件
clip.write_videofile(target_path) # 写入新文件
print('背景音乐添加完成!')
到此结 DragonFangQy 2023.12.23
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