Python实战之屏幕录制功能的实现

import pyautogui
# 捕获整个屏幕
screenshot = pyautogui.screenshot()
# 捕获指定区域
region_screenshot = pyautogui.screenshot(region=(0, 0, 300, 400))

import pyaudio
import wave
# 初始化PyAudio实例
p = pyaudio.PyAudio()
# 打开音频流
stream = p.open(format=pyaudio.paInt16,
                channels=2,
                rate=44100,
                input=True,
                frames_per_buffer=1024)
# 读取音频数据
frames = []
while True:
    data = stream.read(1024)
    frames.append(data)
# 停止并关闭音频流
stream.stop_stream()
stream.close()
p.terminate()
# 保存音频数据到文件
wf = wave.open('output.wav', 'wb')
wf.setnchannels(2)
wf.setsampwidth(p.get_sample_size(pyaudio.paInt16))
wf.setframerate(44100)
wf.writeframes(b''.join(frames))
wf.close()

import subprocess
# 使用ffmpeg将图像和音频合成视频
command = "ffmpeg -f image2 -pattern_type glob -i 'images/*.png' -i audio.wav -c:v libx264 -c:a aac -strict experimental output.mp4"
subprocess.run(command, shell=True)

import pyautogui
import pyaudio
import wave
import subprocess
import cv2
import numpy as np
from datetime import datetime
def capture_screen(region=None):
    if region:
        return pyautogui.screenshot(region=region)
    else:
        return pyautogui.screenshot()
def capture_audio():
    p = pyaudio.PyAudio()
    stream = p.open(format=pyaudio.paInt16,
                    channels=2,
                    rate=44100,
                    input=True,
                    frames_per_buffer=1024)
    frames = []
    while True:
        data = stream.read(1024)
        frames.append(data)
    stream.stop_stream()
    stream.close()
    p.terminate()
    return frames
def save_audio(frames, filename):
    p = pyaudio.PyAudio()
    wf = wave.open(filename, 'wb')
    wf.setnchannels(2)
    wf.setsampwidth(p.get_sample_size(pyaudio.paInt16))
    wf.setframerate(44100)
    wf.writeframes(b''.join(frames))
    wf.close()
def save_video(images, audio_filename, output_filename):
    image_pattern = "images/image%04d.png"
    subprocess.run(f"ffmpeg -f image2 -pattern_type glob -i '{image_pattern}' -i {audio_filename} -c:v libx264 -c:a aac -strict experimental {output_filename}", shell=True)
def record_screen(region=None, duration=10):
    images = []
    frames = capture_audio()
    start_time = datetime.now()
    while (datetime.now() - start_time).seconds < duration:
        screenshot = capture_screen(region=region)
        images.append(screenshot)
    save_audio(frames, "audio.wav")
    for i, image in enumerate(images):
        image.save(f"images/image{i:04d}.png")
    save_video(images, "audio.wav", "output.mp4")
# 使用示例
record_screen(region=(0, 0, 1280, 720), duration=20)

import cv2
def show_preview(region=None):
    while True:
        screenshot = capture_screen(region=region)
        image = np.array(screenshot)
        cv2.imshow('Preview', image)
        if cv2.waitKey(1) & 0xFF == ord('q'):
            break
    cv2.destroyAllWindows()

from PIL import Image, ImageDraw, ImageFont
def add_watermark(image, text, position=(0, 0)):
    draw = ImageDraw.Draw(image)
    font = ImageFont.truetype('arial.ttf', 36)
    draw.text(position, text, (255, 255, 255), font=font)
    return image

watermarked_image = add_watermark(screenshot, "CSDN Blogger", position=(10, 10))
watermarked_image.save(f"images/image{i:04d}.png")

import platform
def get_platform():
    return platform.system()
if get_platform() == "Windows":
    # Windows特定的代码
elif get_platform() == "Darwin":
    # macOS特定的代码
else:
    # Linux特定的代码