安装ffmpeg

一、问题现象（附报错日志上下文）：
1. 在使用orangepiaipro尝试python版yolov5摄像头目标检测时发生的问题，Cpp版代码可正常运行。无法安装av库。
(base) HwHiAiUser@orangepiaipro:~$ python3 -m pip install av==6.2.0
Defaulting to user installation because normal site-packages is not writeable
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting av==6.2.0
  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/84/77/0be0fdaa3b7912c184705a4545ae6f1e9e47ab9e3834a3ef5caf2d7ca1e7/av-6.2.0.tar.gz (2.0 MB)
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: av
  Building wheel for av (setup.py) ... error
  error: subprocess-exited-with-error
  × python setup.py bdist_wheel did not run successfully.
  │ exit code: 1
  ╰─> [114 lines of output]
......
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for av
  Running setup.py clean for av
Failed to build av
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (av)

2. 源码运行出错
由于没有安装av，所以我安装了最新版的av库代替，尝试运行代码
(base) HwHiAiUser@orangepiaipro:~/Public/EdgeAndRobotics-master/Samples/YOLOV5USBCamera/python/scripts$ bash sample_run.sh
[INFO] The sample starts to run
Traceback (most recent call last):
  File "/home/HwHiAiUser/Public/EdgeAndRobotics-master/Samples/YOLOV5USBCamera/python/src/YOLOV5USBCamera.py", line 1, in <module>
    import videocapture as video
ModuleNotFoundError: No module named 'videocapture'
[INFO] The program runs failed
已经按照文档内容将ACLLite中的python部分复制到第三方库目录，似乎未检测到目录下的videocapture.py，后面导入的pyACLLite的内容也没有成功导入。

二、软件版本:
-- CANN 版本:7.0.0
--Tensorflow/Pytorch/MindSpore 版本: mindspore=2.2.14, pytorch-npu=2.1.0.post2+git64bdab5
--Python 版本:3.9.2
--MindStudio版本:无
--操作系统版本 (e.g., Ubuntu 22.04):

三、测试步骤：
根据pyACLLite的readme文档进行安装，进行到av库的安装时，出现failed building wheel的错误，无法安装av库。

四、日志信息:
(base) HwHiAiUser@orangepiaipro:~$ python3 -m pip install av==6.2.0
Defaulting to user installation because normal site-packages is not writeable
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Collecting av==6.2.0
  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/84/77/0be0fdaa3b7912c184705a4545ae6f1e9e47ab9e3834a3ef5caf2d7ca1e7/av-6.2.0.tar.gz (2.0 MB)
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: av
  Building wheel for av (setup.py) ... error
  error: subprocess-exited-with-error

× python setup.py bdist_wheel did not run successfully.
  │ exit code: 1
  ╰─> [114 lines of output]
      running bdist_wheel
      running build
      running build_py
      creating build
      creating build/lib.linux-aarch64-cpython-39
      creating build/lib.linux-aarch64-cpython-39/av
      copying av/deprecation.py -> build/lib.linux-aarch64-cpython-39/av
      copying av/datasets.py -> build/lib.linux-aarch64-cpython-39/av
      copying av/__init__.py -> build/lib.linux-aarch64-cpython-39/av
      copying av/__main__.py -> build/lib.linux-aarch64-cpython-39/av
      creating build/lib.linux-aarch64-cpython-39/av/subtitles
      copying av/subtitles/__init__.py -> build/lib.linux-aarch64-cpython-39/av/subtitles
      creating build/lib.linux-aarch64-cpython-39/av/audio
      copying av/audio/__init__.py -> build/lib.linux-aarch64-cpython-39/av/audio
      creating build/lib.linux-aarch64-cpython-39/av/data
      copying av/data/__init__.py -> build/lib.linux-aarch64-cpython-39/av/data
      creating build/lib.linux-aarch64-cpython-39/av/container
      copying av/container/__init__.py -> build/lib.linux-aarch64-cpython-39/av/container
      creating build/lib.linux-aarch64-cpython-39/av/video
      copying av/video/__init__.py -> build/lib.linux-aarch64-cpython-39/av/video
      creating build/lib.linux-aarch64-cpython-39/av/filter
      copying av/filter/__init__.py -> build/lib.linux-aarch64-cpython-39/av/filter
      creating build/lib.linux-aarch64-cpython-39/av/codec
      copying av/codec/__init__.py -> build/lib.linux-aarch64-cpython-39/av/codec
      running build_ext
      running config
      writing build/temp.linux-aarch64-cpython-39/include/pyav/config.h
      running cythonize
      Compiling av/bytesource.pyx because it changed.
      [1/1] Cythonizing av/bytesource.pyx
      Compiling av/descriptor.pyx because it changed.
      [1/1] Cythonizing av/descriptor.pyx
      Compiling av/logging.pyx because it changed.
      [1/1] Cythonizing av/logging.pyx
      performance hint: av/logging.pyx:206:5: Exception check on 'log_callback' will always require the GIL to be acquired.
      Possible solutions:
          1. Declare 'log_callback' as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
          2. Use an 'int' return type on 'log_callback' to allow an error code to be returned.

Error compiling Cython file:
      ------------------------------------------------------------
      ...
      cdef const char *log_context_name(void *ptr) nogil:
          cdef log_context *obj = <log_context*>ptr
          return obj.name

cdef lib.AVClass log_class
      log_class.item_name = log_context_name
                            ^
      ------------------------------------------------------------

av/logging.pyx:190:22: Cannot assign type 'const char *(void *) except? NULL nogil' to 'const char *(*)(void *) noexcept nogil'. Exception values are incompatible. Suggest adding 'noexcept' to the type of 'log_context_name'.

Error compiling Cython file:
      ------------------------------------------------------------
      ...
          logger = logging.getLogger(logger_name)
          logger.log(py_level, message.strip())

# Start the magic!
      lib.av_log_set_callback(log_callback)
                              ^
      ------------------------------------------------------------

av/logging.pyx:316:24: Cannot assign type 'void (void *, int, const char *, va_list) except * nogil' to 'av_log_callback' (alias of 'void (*)(void *, int, const char *, va_list) noexcept nogil'). Exception values are incompatible. Suggest adding 'noexcept' to the type of 'log_callback'.
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-install-2sl24yqr/av_0b411a2c917d472a8715497eb824c060/setup.py", line 492, in <module>
          setup(
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/__init__.py", line 87, in setup
          return distutils.core.setup(**attrs)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/core.py", line 185, in setup
          return run_commands(dist)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
          dist.run_commands()
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/dist.py", line 969, in run_commands
          self.run_command(cmd)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/dist.py", line 1208, in run_command
          super().run_command(command)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
          cmd_obj.run()
        File "/usr/local/miniconda3/lib/python3.9/site-packages/wheel/bdist_wheel.py", line 299, in run
          self.run_command('build')
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/cmd.py", line 318, in run_command
          self.distribution.run_command(command)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/dist.py", line 1208, in run_command
          super().run_command(command)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
          cmd_obj.run()
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/command/build.py", line 132, in run
          self.run_command(cmd_name)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/cmd.py", line 318, in run_command
          self.distribution.run_command(command)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/dist.py", line 1208, in run_command
          super().run_command(command)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
          cmd_obj.run()
        File "/tmp/pip-install-2sl24yqr/av_0b411a2c917d472a8715497eb824c060/setup.py", line 488, in run
          self.run_command('cythonize')
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/cmd.py", line 318, in run_command
          self.distribution.run_command(command)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/dist.py", line 1208, in run_command
          super().run_command(command)
        File "/usr/local/miniconda3/lib/python3.9/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
          cmd_obj.run()
        File "/tmp/pip-install-2sl24yqr/av_0b411a2c917d472a8715497eb824c060/setup.py", line 419, in run
          new_ext = cythonize(
        File "/home/HwHiAiUser/.local/lib/python3.9/site-packages/Cython/Build/Dependencies.py", line 1154, in cythonize
          cythonize_one(*args)
        File "/home/HwHiAiUser/.local/lib/python3.9/site-packages/Cython/Build/Dependencies.py", line 1321, in cythonize_one
          raise CompileError(None, pyx_file)
      Cython.Compiler.Errors.CompileError: av/logging.pyx
      [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for av
  Running setup.py clean for av
Failed to build av
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (av)

五、相关链接:
[pyACLLite安装](https://gitee.com/ascend/ACLLite/tree/master/#%E5%AE%89%E8%A3%85%E6%95%99%E7%A8%8B)
[YOLOv5-USBCamera-demo-python](https://gitee.com/ascend/EdgeAndRobotics/tree/master/Samples/YOLOV5USBCamera/python)

ModuleNotFoundError: No module named 'videocapture'
你好，这个错误就是pyaclite没有找到导致的，请问你安装pyacllite的步骤是怎样的？

按照ALCLite-python快速部署中的说明进行

1.设置环境变量，配置程序编译依赖的头文件，库文件路径。“/usr/local/Ascend”请替换“Ascend-cann-toolkit”包的实际安装路径。
export DDK_PATH=/usr/local/Ascend/ascend-toolkit/latest
export NPU_HOST_LIB=$DDK_PATH/runtime/lib64/stub export THIRDPART_PATH=${DDK_PATH}/thirdpart
export PYTHONPATH=${THIRDPART_PATH}/python:$PYTHONPATH
2.创建THIRDPART_PATH路径
mkdir -p ${THIRDPART_PATH}
3.安装依赖

安装ffmpeg

sudo apt-get install -y libavformat-dev libavcodec-dev libavdevice-dev libavutil-dev libswscale-dev libavresample-dev

安装其它依赖

python3 -m pip install --upgrade pip
python3 -m pip install Cython
sudo apt-get install pkg-config libxcb-shm0-dev libxcb-xfixes0-dev

安装pyav

python3 -m pip install av==6.2.0

安装pillow 的依赖

sudo apt-get install libtiff5-dev libjpeg8-dev zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev python-tk

安装numpy和PIL

python3 -m pip install numpy
python3 -m pip install Pillow
4.将acllite目录拷贝到运行环境的第三方库目录
cp -r ${HOME}/ACLLite/python ${THIRDPART_PATH}

快速部署

*.其中有无法安装的依赖:

-libavresample-dev,报错如下

Package libavresample-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'libavresample-dev' has no installation candidate

-av库,已经提供报错信息

流程就是这样

尊敬的开发者，您好，您本次提供的信息我们已经收到。
av库安装失败的问题，请检查一下pip源是否存在问题，香橙派镜像中有acllite，为什么要重新进行安装呢？
希望以上可以解决您的疑虑。若您还有其它建议或求助，可在论坛或工单继续反馈，我们收到后会尽快处理。感谢您的支持！

Ascend/samples

内容风险标识

根据readme文档安装pyacl相关内容av库时出现错误

评论 (3)

安装ffmpeg

安装其它依赖

安装pyav

安装pillow 的依赖

安装numpy和PIL

Ascend/samples .gitee-modal { width: 500px !important; }

内容风险标识

根据readme文档安装pyacl相关内容av库时出现错误

评论 (3)

安装ffmpeg

安装其它依赖

安装pyav

安装pillow 的依赖

安装numpy和PIL

搜索帮助

Ascend/samples