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python 錄屏 有聲

錢瀠龍2年前9瀏覽0評論

Python是一種廣泛使用的高級編程語言,其功能強大且易于使用。Python可以用于制作多媒體內容,例如錄屏有聲的視頻。下面將介紹如何使用Python進行錄屏有聲。

# 導入必要的庫
import cv2
import numpy as np
import pyaudio
import wave
import threading
# 設置錄屏參數
screen_size = (1920, 1080)
fps = 24.0
# 開啟屏幕錄制
screen_capture = cv2.VideoCapture(0)
screen_capture.set(cv2.CAP_PROP_FRAME_WIDTH, screen_size[0])
screen_capture.set(cv2.CAP_PROP_FRAME_HEIGHT, screen_size[1])
screen_capture.set(cv2.CAP_PROP_FPS, fps)
# 設置音頻錄制參數
audio_chunk_size = 1024
audio_sample_rate = 44100
audio_channels = 2
audio_format = pyaudio.paInt16
audio_seconds = 10
# 開始錄制音頻
audio_capture = pyaudio.PyAudio()
audio_stream = audio_capture.open(format=audio_format, channels=audio_channels,
rate=audio_sample_rate, input=True,
frames_per_buffer=audio_chunk_size)
# 啟動音頻錄制線程
audio_frames = []
is_recording_audio = True
def record_audio():
global audio_frames
while is_recording_audio:
audio_data = audio_stream.read(audio_chunk_size)
audio_frames.append(np.fromstring(audio_data, dtype=np.int16))
audio_thread = threading.Thread(target=record_audio)
audio_thread.start()
# 開始錄制視頻
video_frames = []
is_recording_video = True
while is_recording_video:
ret, frame = screen_capture.read()
video_frames.append(frame)
# 錄制結束,停止音頻錄制線程
is_recording_audio = False
audio_thread.join()
audio_stream.stop_stream()
audio_stream.close()
audio_capture.terminate()
# 將視頻和音頻寫入文件
video_writer = cv2.VideoWriter('output.avi', cv2.VideoWriter_fourcc(*'XVID'), fps, screen_size)
for frame in video_frames:
video_writer.write(frame)
audio_frames = np.concatenate(audio_frames, axis=0)
audio_writer = wave.open('output.wav', 'wb')
audio_writer.setnchannels(audio_channels)
audio_writer.setsampwidth(audio_capture.get_sample_size(audio_format))
audio_writer.setframerate(audio_sample_rate)
audio_writer.writeframes(audio_frames.tobytes())
audio_writer.close()
# 完成
print('錄制完成!')

以上代碼包括了屏幕錄制、音頻錄制和視頻和音頻合成等多個步驟。用戶可以根據需要調整參數和設置,在Python中實現錄屏有聲非常容易。