opencv-python视频处理之录制视频
录制一段视频保存
import cv2# 创建一个视频窗口cv2.namedWindow('Video')# cv2.VideoCapture(0)打开摄像头video_capture = cv2.VideoCapture(0)video_writer = cv2.VideoWriter('test.avi',cv2.VideoWriter_fourcc('M', 'J', 'P', 'G'),video_capture.get(cv2.CAP_PROP_FPS),(int(video_capture.get(cv2.CAP_PROP_FRAME_WIDTH)),int(video_capture.get(cv2.CAP_PROP_FRAME_HEIGHT))))# cv2.VideoWriter 分别传入的参数是路径 格式，帧率，视频尺寸success,frame = video_capture.read()# 成功打开摄像头 直到按esc退出保存视频while success and not cv2.waitKey(1) == 27:blur_frame = cv2.GaussianBlur(frame[:,::-1], (3,3),0)video_writer.write(blur_frame)cv2.imshow("Video", blur_frame)success, frame = video_capture.read()cv2.destroyWindow('Video')video_capture.release()if __name__ == '__main__':pass下面是录制带有声音的视频
import wavefrom pyaudio import PyAudio,paInt16from PIL import ImageGrabimport numpy as npimport cv2from moviepy.editor import *from moviepy.audio.fx import allimport time
CHUNK = 1024FORMAT = pyaudio.paInt16
CHANNELS = 2RATE = 44100WAVE_OUTPUT_FILENAME = "output.wav"p = pyaudio.PyAudio()wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')wf.setnchannels(CHANNELS)wf.setsampwidth(p.get_sample_size(FORMAT))wf.setframerate(RATE)audio_record_flag = Truedef callback(in_data, frame_count, time_info, status):wf.writeframes(in_data)if audio_record_flag:return (in_data, pyaudio.paContinue)else:return (in_data, pyaudio.paComplete)stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),channels=wf.getnchannels(),rate=wf.getframerate(),input=True,stream_callback=callback)image = ImageGrab.grab()#获得当前屏幕width = image.size[0]height = image.size[1]print("width:", width, "height:", height)print("image mode:",image.mode)k=np.zeros((width,height),np.uint8)fourcc = cv2.VideoWriter_fourcc(*'XVID')#编码格式video = cv2.VideoWriter('test.mp4', fourcc, 9.5, (width, height))#经实际测试，单线程下最高帧率为10帧/秒，且会变动，因此选择9.5帧/秒#若设置帧率与实际帧率不一致，会导致视频时间与音频时间不一致print("video recording!!!!!")stream.start_stream()print("audio recording!!!!!")record_count = 0while True:img_rgb = ImageGrab.grab()img_bgr=cv2.cvtColor(np.array(img_rgb), cv2.COLOR_RGB2BGR)#转为opencv的BGR格式video.write(img_bgr)record_count += 1if(record_count > 200):breakprint(record_count, time.time())audio_record_flag = Falsewhile stream.is_active():time.sleep(1)stream.stop_stream()stream.close()wf.close()p.terminate()print("audio recording done!!!!!")video.release()cv2.destroyAllWindows()print("video recording done!!!!!")print("video audio merge!!!!!")audioclip = AudioFileClip("output.wav")videoclip = VideoFileClip("test.mp4")videoclip2 = videoclip.set_audio(audioclip)video = CompositeVideoClip([videoclip2])video.write_videofile("test2.mp4",codec='mpeg4')————————————————
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原文链接：https://blog.csdn.net/zhaoyun_zzz/java/article/details/84341801