序言
我们在观看视频的时候,有时候会出现一些奇怪的马赛克,影响我们的观影体验,那么这些马赛克是如何精确的加上去的呢?
本次我们就来用Python实现对视频自动打码!
准备工作
环境咱们还是使用 Python3.8 和 pycharm2021 即可
实现原理
将视频分为音频和画面;
画面中出现人脸和目标比对,相应人脸进行打码;
处理后的视频添加声音;
模块
手动安装一下 cv2 模块 ,pip install opencv-python 安装
素材工具
我们需要安装一下 ffmpeg 音视频转码工具
代码解析
导入需要使用的模块
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import cv2 import face_recognition # 人脸识别库 99.7% cmake dlib face_recognition import subprocess |
将视频转为音频
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def video2mp3(file_name): """ :param file_name: 视频文件路径 :return: """ outfile_name = file_name.split( '.' )[ 0 ] + '.mp3' cmd = 'ffmpeg -i ' + file_name + ' -f mp3 ' + outfile_name print (cmd) subprocess.call(cmd, shell = False ) |
打码
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def mask_video(input_video, output_video, mask_path = 'mask.jpg' ): """ :param input_video: 需打码的视频 :param output_video: 打码后的视频 :param mask_path: 打码图片 :return: """ # 读取图片 mask = cv2.imread(mask_path) # 读取视频 cap = cv2.VideoCapture(input_video) # 视频 fps width height v_fps = cap.get( 5 ) v_width = cap.get( 3 ) v_height = cap.get( 4 ) # 设置写入视频参数 格式MP4 # 画面大小 size = ( int (v_width), int (v_height)) fourcc = cv2.VideoWriter_fourcc( 'm' , 'p' , '4' , 'v' ) # 输出视频 out = cv2.VideoWriter(output_video, fourcc, v_fps, size) # 已知人脸 known_image = face_recognition.load_image_file( 'tmr.jpg' ) biden_encoding = face_recognition.face_encodings(known_image)[ 0 ] cap = cv2.VideoCapture(input_video) while (cap.isOpened()): ret, frame = cap.read() if ret: # 检测人脸 # 人脸区域 face_locations = face_recognition.face_locations(frame) for (top_right_y, top_right_x, left_bottom_y, left_bottom_x) in face_locations: print ((top_right_y, top_right_x, left_bottom_y, left_bottom_x)) unknown_image = frame[top_right_y - 50 :left_bottom_y + 50 , left_bottom_x - 50 :top_right_x + 50 ] if face_recognition.face_encodings(unknown_image) ! = []: unknown_encoding = face_recognition.face_encodings(unknown_image)[ 0 ] # 对比人脸 results = face_recognition.compare_faces([biden_encoding], unknown_encoding) # [True] # 贴图 if results = = [ True ]: mask = cv2.resize(mask, (top_right_x - left_bottom_x, left_bottom_y - top_right_y)) frame[top_right_y:left_bottom_y, left_bottom_x:top_right_x] = mask out.write(frame) else : break |
音频添加到画面
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def video_add_mp3(file_name, mp3_file): """ :param file_name: 视频画面文件 :param mp3_file: 视频音频文件 :return: """ outfile_name = file_name.split( '.' )[ 0 ] + '-f.mp4' subprocess.call( 'ffmpeg -i ' + file_name + ' -i ' + mp3_file + ' -strict -2 -f mp4 ' + outfile_name, shell = False ) |
完整代码
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import cv2 import face_recognition # 人脸识别库 99.7% cmake dlib face_recognition import subprocess def video2mp3(file_name): outfile_name = file_name.split( '.' )[ 0 ] + '.mp3' cmd = 'ffmpeg -i ' + file_name + ' -f mp3 ' + outfile_name print (cmd) subprocess.call(cmd, shell = False ) def mask_video(input_video, output_video, mask_path = 'mask.jpg' ): # 读取图片 mask = cv2.imread(mask_path) # 读取视频 cap = cv2.VideoCapture(input_video) # 视频 fps width height v_fps = cap.get( 5 ) v_width = cap.get( 3 ) v_height = cap.get( 4 ) # 设置写入视频参数 格式MP4 # 画面大小 size = ( int (v_width), int (v_height)) fourcc = cv2.VideoWriter_fourcc( 'm' , 'p' , '4' , 'v' ) # 输出视频 out = cv2.VideoWriter(output_video, fourcc, v_fps, size) # 已知人脸 known_image = face_recognition.load_image_file( 'tmr.jpg' ) biden_encoding = face_recognition.face_encodings(known_image)[ 0 ] cap = cv2.VideoCapture(input_video) while (cap.isOpened()): ret, frame = cap.read() if ret: # 检测人脸 # 人脸区域 face_locations = face_recognition.face_locations(frame) for (top_right_y, top_right_x, left_bottom_y, left_bottom_x) in face_locations: print ((top_right_y, top_right_x, left_bottom_y, left_bottom_x)) unknown_image = frame[top_right_y - 50 :left_bottom_y + 50 , left_bottom_x - 50 :top_right_x + 50 ] if face_recognition.face_encodings(unknown_image) ! = []: unknown_encoding = face_recognition.face_encodings(unknown_image)[ 0 ] # 对比人脸 results = face_recognition.compare_faces([biden_encoding], unknown_encoding) # [True] # 贴图 if results = = [ True ]: mask = cv2.resize(mask, (top_right_x - left_bottom_x, left_bottom_y - top_right_y)) frame[top_right_y:left_bottom_y, left_bottom_x:top_right_x] = mask out.write(frame) else : break def video_add_mp3(file_name, mp3_file): outfile_name = file_name.split( '.' )[ 0 ] + '-f.mp4' subprocess.call( 'ffmpeg -i ' + file_name + ' -i ' + mp3_file + ' -strict -2 -f mp4 ' + outfile_name, shell = False ) if __name__ = = '__main__' : # 1. video2mp3( 'cut.mp4' ) # 2. mask_video(input_video = 'cut.mp4' ,output_video = 'output.mp4' ) # 3. video_add_mp3(file_name = 'output.mp4' ,mp3_file = 'cut.mp3' ) |
兄弟们,快去试试吧!
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原文链接:https://blog.csdn.net/fei347795790/article/details/124023651