pyvirtualcam使用OBS虚拟摄像头_obs virtualcam

思路

安装一个虚拟摄像头，播放视频来替换摄像头内容，用代码控制播放的内容。

打包通过python打包，同时控制obs的安装。

步骤

OBS虚拟摄像头安装

卸载和安装OBS虚拟摄像头的脚本

obs-studio\data\obs-plugins\win-dshow\virtualcam-uninstall.bat

安装是virtualcam-install

背景图placeholder.png，替换后要重启

Pyinstaller

import cv2
import os
import random
import pyvirtualcam
 
class FakeCamera:
    def __init__(self, video_file, root_path):
        
        self.number = len(video_file)
        self.root = root_path
 
        self.video_file = video_file
 
        self.video = cv2.VideoCapture(self.root + self.video_file[random.randint(0, self.number - 1)])
 
    def read(self):
        ret, frame = self.video.read()
        if ret:
            return ret, frame
        else:
            # is video is done, select a new video file randomly
            self.video = cv2.VideoCapture(self.root + self.video_file[random.randint(0, self.number - 1)])
            # is video is done, restart the video
            self.video.set(cv2.CAP_PROP_POS_FRAMES, 0)
            
            return self.video.read()
 
    def release(self):
        self.video.release()
 
 
# main funciton
def play_fake_camera():
    video_file = os.listdir('./video/')  # video path
    root_path = './video/'
    fake_camera = FakeCamera(video_file, root_path)
    print('Running fake camera')
 
    w = 1280
    h = 576
 
    # create virtual camera
    with pyvirtualcam.Camera(width=w, height=h, fps=24) as cam:
        while True:
            ret, frame = fake_camera.read()
            if not ret:
                break
            # turn frame to BGR
            img = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
            
            # send frame to virtual camera
            cam.send(img)
 
            # camera wait for next frame
            cam.sleep_until_next_frame()
    fake_camera.release()
    cv2.destroyAllWindows()
 
# run the code
play_fake_camera()

先简单的用pyinstaller打包：pyinstaller -F -w fakecameracv2.py

代码写的video文件夹记得建，放入对应分辨率的视频。

问题

RuntimeError: 'obs' backend: virtual camera output could not be started

检查是否安装，或者是否被其他程序占用