python - 使用 OpenCV 4.5.1 打开 VideoStream 可在 Windows 上运行，但在 Docker python:3.9.2-slim-buster 上针对特定 IP cam 失败
问题描述
我有 2 台 IP 摄像头 - 一台是海康威视，另一台是 Provision ISR。两者都使用 Onvif 并在 VLC 上工作。我编写了一个简单的 python 脚本，每 5 秒从他们的视频流中记录一次图像。在 Windows 10 上，使用 VSCode，它们都可以按预期工作。部署到 Docker 容器后，我的脚本在 Hikvision 上按预期工作，但在 Provision ISR 上失败 - 它不会打开流。
在 windows ( venv python -c "import cv2; print(cv2.getBuildInformation())"3.9.2) 和 docker 机器上运行会带来稍微不同的结果，但我无法理解从中取出一些东西......这是 Windows 的：
General configuration for OpenCV 4.5.1 =====================================
Version control: 4.5.1
Platform:
Timestamp: 2021-01-02T14:30:58Z
Host: Windows 6.3.9600 AMD64
CMake: 3.18.4
CMake generator: Visual Studio 14 2015 Win64
CMake build tool: C:/Program Files (x86)/MSBuild/14.0/bin/MSBuild.exe
MSVC: 1900
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2
requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
SSE4_1 (15 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (4 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (29 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
C/C++:
Built as dynamic libs?: NO
C++ standard: 11
C++ Compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe (ver 19.0.24241.7)
C++ flags (Release): /DWIN32 /D_WINDOWS /W4 /GR /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589
/MP /MT /O2 /Ob2 /DNDEBUG
C++ flags (Debug): /DWIN32 /D_WINDOWS /W4 /GR /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589
/MP /MTd /Zi /Ob0 /Od /RTC1
C Compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe
C flags (Release): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /MP /MT /O2 /Ob2 /DNDEBUG
C flags (Debug): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /MP /MTd /Zi /Ob0 /Od /RTC1
Linker flags (Release): /machine:x64 /NODEFAULTLIB:atlthunk.lib /INCREMENTAL:NO /NODEFAULTLIB:libcmtd.lib /NODEFAULTLIB:libcpmtd.lib /NODEFAULTLIB:msvcrtd.lib
Linker flags (Debug): /machine:x64 /NODEFAULTLIB:atlthunk.lib /debug /INCREMENTAL /NODEFAULTLIB:libcmt.lib /NODEFAULTLIB:libcpmt.lib /NODEFAULTLIB:msvcrt.lib
ccache: NO
Precompiled headers: YES
Extra dependencies: ade wsock32 comctl32 gdi32 ole32 setupapi ws2_32
3rdparty dependencies: ittnotify libprotobuf zlib libjpeg-turbo libwebp libpng libtiff libopenjp2 IlmImf quirc ippiw ippicv
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo python3 stitching video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2 ts
Applications: -
Documentation: NO
Non-free algorithms: NO
Windows RT support: NO
GUI:
Win32 UI: YES
VTK support: NO
Media I/O:
ZLib: build (ver 1.2.11)
JPEG: build-libjpeg-turbo (ver 2.0.6-62)
WEBP: build (ver encoder: 0x020f)
PNG: build (ver 1.6.37)
TIFF: build (ver 42 - 4.0.10)
JPEG 2000: build (ver 2.3.1)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: YES (prebuilt binaries)
avcodec: YES (58.91.100)
avformat: YES (58.45.100)
avutil: YES (56.51.100)
swscale: YES (5.7.100)
avresample: YES (4.0.0)
GStreamer: NO
DirectShow: YES
Media Foundation: YES
DXVA: NO
Parallel framework: Concurrency
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2020.0.0 Gold [2020.0.0]
at: C:/Users/appveyor/AppData/Local/Temp/1/pip-req-build-wvn_it83/_skbuild/win-amd64-3.9/cmake-build/3rdparty/ippicv/ippicv_win/icv
Intel IPP IW: sources (2020.0.0)
at: C:/Users/appveyor/AppData/Local/Temp/1/pip-req-build-wvn_it83/_skbuild/win-amd64-3.9/cmake-build/3rdparty/ippicv/ippicv_win/iw
Lapack: NO
Eigen: NO
Custom HAL: NO
Protobuf: build (3.5.1)
OpenCL: YES (NVD3D11)
Include path: C:/Users/appveyor/AppData/Local/Temp/1/pip-req-build-wvn_it83/opencv/3rdparty/include/opencl/1.2
Link libraries: Dynamic load
Python 3:
Interpreter: C:/Python39-x64/python.exe (ver 3.9)
Libraries: C:/Python39-x64/libs/python39.lib (ver 3.9.0)
numpy: C:/Users/appveyor/AppData/Local/Temp/1/pip-build-env-sk7r7w_5/overlay/Lib/site-packages/numpy/core/include (ver 1.19.3)
install path: python
Python (for build): C:/Python27-x64/python.exe
Java:
ant: NO
JNI: C:/Program Files/Java/jdk1.8.0/include C:/Program Files/Java/jdk1.8.0/include/win32 C:/Program Files/Java/jdk1.8.0/include
Java wrappers: NO
Java tests: NO
Install to: C:/Users/appveyor/AppData/Local/Temp/1/pip-req-build-wvn_it83/_skbuild/win-amd64-3.9/cmake-install
-----------------------------------------------------------------
这是 Docker 之一（python：3.9.2-slim-buster）：
General configuration for OpenCV 4.5.1 =====================================
Version control: 4.5.1-dirty
Platform:
Timestamp: 2021-01-02T13:04:10Z
Host: Linux 4.15.0-1077-gcp x86_64
CMake: 3.18.4
CMake generator: Unix Makefiles
CMake build tool: /bin/gmake
Configuration: Release
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
SSE4_1 (15 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (4 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (29 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
AVX512_SKX (4 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
C/C++:
Built as dynamic libs?: NO
C++ standard: 11
C++ Compiler: /usr/lib/ccache/compilers/c++ (ver 9.3.1)
C++ flags (Release): -Wl,-strip-all -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -Wl,-strip-all -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
C Compiler: /usr/lib/ccache/compilers/cc
C flags (Release): -Wl,-strip-all -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -Wl,-strip-all -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -L/root/ffmpeg_build/lib -Wl,--gc-sections -Wl,--as-needed
Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -L/root/ffmpeg_build/lib -Wl,--gc-sections -Wl,--as-needed
ccache: YES
Precompiled headers: NO
Extra dependencies: ade Qt5::Core Qt5::Gui Qt5::Widgets Qt5::Test Qt5::Concurrent /lib64/libpng.so /lib64/libz.so dl m pthread rt
3rdparty dependencies: ittnotify libprotobuf libjpeg-turbo libwebp libtiff libopenjp2 IlmImf quirc ippiw ippicv
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo python3 stitching video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2 ts
Applications: -
Documentation: NO
Non-free algorithms: NO
GUI:
QT: YES (ver 5.15.0)
QT OpenGL support: NO
GTK+: NO
VTK support: NO
Media I/O:
ZLib: /lib64/libz.so (ver 1.2.7)
JPEG: libjpeg-turbo (ver 2.0.6-62)
WEBP: build (ver encoder: 0x020f)
PNG: /lib64/libpng.so (ver 1.5.13)
TIFF: build (ver 42 - 4.0.10)
JPEG 2000: build (ver 2.3.1)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: YES
avcodec: YES (58.109.100)
avformat: YES (58.61.100)
avutil: YES (56.60.100)
swscale: YES (5.8.100)
avresample: NO
GStreamer: NO
v4l/v4l2: YES (linux/videodev2.h)
Parallel framework: pthreads
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2020.0.0 Gold [2020.0.0]
at: /tmp/pip-req-build-ddpkm6fn/_skbuild/linux-x86_64-3.9/cmake-build/3rdparty/ippicv/ippicv_lnx/icv
Intel IPP IW: sources (2020.0.0)
at: /tmp/pip-req-build-ddpkm6fn/_skbuild/linux-x86_64-3.9/cmake-build/3rdparty/ippicv/ippicv_lnx/iw
Lapack: NO
Eigen: NO
Custom HAL: NO
Protobuf: build (3.5.1)
OpenCL: YES (no extra features)
Include path: /tmp/pip-req-build-ddpkm6fn/opencv/3rdparty/include/opencl/1.2
Link libraries: Dynamic load
Python 3:
Interpreter: /opt/python/cp39-cp39/bin/python (ver 3.9)
Libraries: libpython3.9.a (ver 3.9.0)
numpy: /tmp/pip-build-env-jqrfyj0w/overlay/lib/python3.9/site-packages/numpy/core/include (ver 1.19.3)
install path: python
Python (for build): /bin/python2.7
Java:
ant: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: /tmp/pip-req-build-ddpkm6fn/_skbuild/linux-x86_64-3.9/cmake-install
-----------------------------------------------------------------
如果相关，docker 安装在带有 Ubuntu Desktop 20.04 的英特尔 NUC 上
如果相关，这是我用来构建图像的 dockerfile：
FROM python:3.9.2-slim-buster as builder
# Keeps Python from generating .pyc files in the container
ENV PYTHONDONTWRITEBYTECODE=1
# Without this setting, Python never prints anything out.
ENV PYTHONUNBUFFERED=1
RUN pip install --upgrade pip
COPY ./Cam/requirements.txt .
RUN pip install -r requirements.txt
RUN apt-get update
RUN apt-get install ffmpeg libsm6 libxext6 -y
WORKDIR /app
FROM builder
COPY ./Cam .
CMD ["python", "camStreamer.py"]
最后，这是脚本代码（简化）：
import os, logging, threading
from os.path import join
import sys, inspect, datetime, time
from pathlib import Path
import cv2
import imutils
from imutils.video import VideoStream
def StartRecording(showVideoWindow, interval, imagePath):
key = None
cam = VideoStream(os.getenv("CAM_RTSP")).start()
counter = 0
try:
while True:
## 2 min retry to connect if frame is None
if counter > 60/interval*2: break
ts = time.time()
## Wait for [interval] seconds
while ts + interval > time.time():
continue
print(f"Counter: {counter}, ts: {str(ts)}")
frame = cam.read()
if frame is None:
counter += 1
continue
counter = 0
print("frame is valid")
if showVideoWindow:
frame = imutils.resize(frame, width=1200)
cv2.imshow('VIDEO', frame)
imageName = f"{datetime.datetime.fromtimestamp(ts).strftime('%Y-%m-%dT%H_%M_%S')}.jpg"
cv2.imwrite(join(imagePath, imageName), frame)
print("saved image to disk")
key = cv2.waitKey(1) & 0xFF
if key == ord('q') or key == ord('r'):
break
except Exception as e:
exc_tb = sys.exc_info()[2]
extra = ""
print(f"{inspect.stack()[0][3]}: {e} (lineno: {exc_tb.tb_lineno}) {extra}")
finally:
if showVideoWindow: cv2.destroyAllWindows()
cam.stop()
return key
while True:
log.warning(f"Starting {Name}")
key = StartRecording(
showVideoWindow=(Env.startswith("development") and os.getenv("SHOW_VIDEO") == "True"),
interval=int(os.getenv("SAVE_IMAGE_INTERVAL")),
imagePath=os.getenv('CAPTURE_FOLDER')
)
if key == ord('q'):
break
我为很长的帖子道歉。希望有人能把我引向正确的方向......
解决方案
我使用 ffmpeg 和 opencv 的编译版本在 Linux 上解决了我的问题。
按照此链接首先编译 FFMPEG
https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
在 Ubuntu 20 上编译 OpenCV
apt-get update && \
apt-get install -y sudo openjdk-8-jdk python3 python3-dev python3-pip python3-numpy axel \
tesseract-ocr libtesseract-dev tesseract-ocr-eng tesseract-ocr-por ant \
dcfldd curl ca-certificates apt-utils python3-testresources \
build-essential cmake git pkg-config libgtk-3-dev \
libavcodec-dev libavformat-dev libswscale-dev \
libxvidcore-dev libx264-dev libjpeg-dev libpng-dev libtiff-dev \
openexr libatlas-base-dev libtbb2 libtbb-dev libopenexr-dev \
libgstreamer1.0-dev autoconf automake git-core \
libass-dev libfreetype6-dev libsdl2-dev libtool libva-dev \
libvdpau-dev libxcb1-dev libxcb-shm0-dev \
libxcb-xfixes0-dev texinfo wget zlib1g-dev nasm \
yasm libx265-dev libnuma-dev libvpx-dev libavresample-dev \
libfdk-aac-dev libmp3lame-dev libopus-dev \
libjpeg8-dev libtiff5-dev libv4l-dev dialog libopenblas-dev \
liblapack-dev libblas-dev ffmpeg locales apt-utils \
unzip yasm checkinstall libavresample-dev \
libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \
x264 libfaac-dev libtheora-dev \
libfaac-dev libvorbis-dev \
libopencore-amrnb-dev libopencore-amrwb-dev \
libdc1394-22 libdc1394-22-dev libxine2-dev v4l-utils \
libprotobuf-dev protobuf-compiler curl\
libgoogle-glog-dev libgflags-dev gfortran \
libgphoto2-dev libeigen3-dev libhdf5-dev
下载 OpenCV
git clone https://github.com/opencv/opencv.git
git clone https://github.com/opencv/opencv_contrib.git
cd opencv && mkdir build && cd build && \
cmake -D CMAKE_BUILD_TYPE=RELEASE \
-D CMAKE_INSTALL_PREFIX=/usr/local \
-D INSTALL_C_EXAMPLES=OFF \
-D INSTALL_PYTHON_EXAMPLES=OFF \
-D OPENCV_EXTRA_MODULES_PATH=/opencv_contrib/modules \
-D BUILD_EXAMPLES=OFF \
-D BUILD_opencv_python2=OFF \
-D WITH_FFMPEG=ON \
-D WITH_TBB=ON \
-D WITH_V4L=ON \
-D WITH_QT=OFF \
-D WITH_OPENGL=ON \
-D WITH_GSTREAMER=ON \
-D ENABLE_FAST_MATH=1 ..
cd /opencv/build && make -j$(nproc) && make install && cd / && rm -rvf ./opencv && rm -rfv ./opencv_contrib
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