stebest

如果还是希望用 opencv video capture 处理，1.可以将视频流使用虚拟摄像头输出，用 opencv 打开即可。
2.使用流媒体协议，opencv video capture 应该也直接支持。
3.使用 videogear 的 netgear ，一个比较简单的例子，具体可以去看文档
server end

```
# import required libraries
from vidgear.gears import VideoGear
from vidgear.gears import NetGear

# open any valid video stream(for e.g `test.mp4` file)
stream = VideoGear(source="test.mp4").start()

# Define Netgear Server with default parameters
server = NetGear()

# loop over until KeyBoard Interrupted
while True:

try:

# read frames from stream
frame = stream.read()

# check for frame if Nonetype
if frame is None:
break

# {do something with the frame here}

# send frame to server
server.send(frame)

except KeyboardInterrupt:
break

# safely close video stream
stream.stop()

# safely close server
server.close()
```

client end

```
# import required libraries
from vidgear.gears import NetGear
import cv2


# define Netgear Client with `receive_mode = True` and default parameter
client = NetGear(receive_mode=True)

# loop over
while True:

# receive frames from network
frame = client.recv()

# check for received frame if Nonetype
if frame is None:
break

# {do something with the frame here}

# Show output window
cv2.imshow("Output Frame", frame)

# check for 'q' key if pressed
key = cv2.waitKey(1) & 0xFF
if key == ord("q"):
break

# close output window
cv2.destroyAllWindows()

# safely close client
client.close()
```

不过实际上还是会在本地创建文件，video capture 本身不支持直接从 memory 中读取，如果是自己控制数据流，用一个迭代器或者生成器把每一帧转 cv mat 就可以

@Haku 如果只是希望在内存中方便读取，使用 tmpfile import tempfile
import cv2

my_video_bytes = download_video_in_memory()

with tempfile.NamedTemporaryFile() as temp:
temp.write(my_video_bytes)

video_stream = cv2.VideoCapture(temp.name)

# do your stuff.

@stebest 挺简单的，给个示例吧 import numpy as np
import cv2 as cv
import io

image_stream = io.BytesIO()
image_stream.write(connection.read(image_len))
image_stream.seek(0)
file_bytes = np.asarray(bytearray(image_stream.read()), dtype=np.uint8)
img = cv.imdecode(file_bytes, cv.IMREAD_COLOR)

额，这个倒是跟视频没啥关系，不就是想用 bytesIO 嘛。

@kizunai 不是 hh ，你有兴趣也可以做一个

@whi147 也有精通的人，不过确实，不用精通，但有能独立完成项目的能力

猫

荒废了一年，又重新买了域名准备开门了。
https://dfine.tech