管道OpenCV和PyAudio到ffmpeg流youtube rtmp从python

Question

我如何从python管道openCV和PyAudio到ffmpeg流youtube rtmp。错误信息显示如下:没有这样的过滤器:'pipe:1'1:无效参数

下面是我的代码:

导入模块

import cv2
import subprocess
import pyaudio

音频

p = pyaudio.PyAudio()
info = p.get_host_api_info_by_index(0)
numdevices = info.get('deviceCount')
for i in range(0, numdevices):
if (p.get_device_info_by_host_api_device_index(0, i).get('maxInputChannels')) > 0:
print("Input Device id ", i, " - ", p.get_device_info_by_host_api_device_index(0, i).get('name'))
CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100
stream = p.open(format=FORMAT,
channels=CHANNELS,
rate=RATE,
input=True,
frames_per_buffer=CHUNK)
# Stream Audio data here
# data = stream.read(CHUNK)

视频

rtmp = r'rtmp://a.rtmp.youtube.com/live2/key'
cap = cv2.VideoCapture(0)
width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
fps = 30

命令参数

command = ['ffmpeg',
'-y',
'-f', 'rawvideo',
'-pixel_format', 'bgr24',
'-video_size', "{}x{}".format(width, height),
'-framerate', str(fps),
'-i', 'pipe:0',
'-re',
'-f', 'lavfi',
'-i', 'pipe:1',
'-c:v', 'libx264',
'-c:a', 'aac',
'-vf', 'format=yuv420p',
'-f', 'flv',
rtmp]

创建ffmpeg子进程命令

pipe = subprocess.Popen(command, shell=False, stdin=subprocess.PIPE
)
while cap.isOpened():
success, frame = cap.read()
if success:
if cv2.waitKey(1) & 0xFF == ord('q'):
break
pipe.stdin.write(frame.tostring())
pipe.stdin.write(stream.read(CHUNK))

音频停止

stream.stop_stream()
stream.close()
p.terminate()

视频停止

cap.release()
pipe.terminate()

感谢

Answer 1

我已经成功地使用CreateNamePipe来创建视频，并使用stdin来创建音频。

PIPE_NAME = r'\.pipeVideoPipe'
video_pipe = win32pipe.CreateNamedPipe(
PIPE_NAME,
win32pipe.PIPE_ACCESS_OUTBOUND,
win32pipe.PIPE_TYPE_BYTE | win32pipe.PIPE_READMODE_BYTE | win32pipe.PIPE_WAIT,
1, 65536, 65536,
0,
None)