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• CVAT error during installation of development version

  28 novembre 2022, par Raman

  I'm trying to install development version of CVAT according to official instruction but struggling at the step of requirements.txt applying :

  


  pip install -r cvat/requirements/development.txt


  


  ... with following error :

  


  Skipping wheel build for av, due to binaries being disabled for it.
Skipping wheel build for datumaro, due to binaries being disabled for it.
Installing collected packages: wrapt, tf-estimator-nightly, termcolor, tensorboard-plugin-wit, Shapely, rules, rope, rjsmin, rcssmin, pytz, pyasn1, patool, mistune, mccabe, libclang, keras, itypes, flatbuffers, entrypoint2, EasyProcess, dj-pagination, diskcache, av, addict, Werkzeug, urllib3, uritemplate, typing-extensions, tqdm, tornado, toml, threadpoolctl, tensorflow-io-gcs-filesystem, tensorboard-data-server, sqlparse, smmap, six, ruamel.yaml.clib, rsa, redis, PyYAML, pyunpack, pyrsistent, pyparsing, pylogbeat, pyjwt, Pygments, pycparser, pyasn1-modules, protobuf, Pillow, oauthlib, numpy, networkx, natsort, MarkupSafe, Markdown, lxml, lazy-object-proxy, kiwisolver, joblib, jmespath, isort, inflection, idna, google-crc32c, gast, fonttools, dnspython, django-extensions, deprecated, defusedxml, cycler, click, charset-normalizer, certifi, cachetools, attrs, asgiref, absl-py, tensorboardX, snakeviz, scipy, ruamel.yaml, rq, requests, python3-openid, python-ldap, python-dateutil, pdf2image, packaging, orderedmultidict, opt-einsum, opencv-python-headless, opencv-python, keras-preprocessing, jsonschema, jinja2, isodate, h5py, grpcio, googleapis-common-protos, google-resumable-media, google-pasta, google-auth, gitdb, Django, cffi, astunparse, astroid, scikit-learn, requests-oauthlib, pylint, pandas, matplotlib, limits, google-api-core, GitPython, furl, djangorestframework, django-sendfile2, django-rq, django-filter, django-cors-headers, django-auth-ldap, django-appconf, cryptography, croniter, coreschema, botocore, azure-core, s3transfer, rq-scheduler, python-logstash-async, pylint-plugin-utils, pycocotools, open3d, msrest, google-cloud-core, google-auth-oauthlib, drf-spectacular, django-rest-auth, django-compressor, coreapi, tensorboard, pylint-django, google-cloud-storage, django-allauth, datumaro, boto3, azure-storage-blob, tensorflow
  Running setup.py install for av ... error
  error: subprocess-exited-with-error
  
  × Running setup.py install for av did not run successfully.
  │ exit code: 1
  ╰─> [50 lines of output]
      running install
      /Users/dd/cvat/.env/lib/python3.9/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
        warnings.warn(
      running build
      running build_py
      creating build
      creating build/lib.macosx-12.4-x86_64-cpython-39
      creating build/lib.macosx-12.4-x86_64-cpython-39/av
      copying av/deprecation.py -> build/lib.macosx-12.4-x86_64-cpython-39/av
      copying av/datasets.py -> build/lib.macosx-12.4-x86_64-cpython-39/av
      copying av/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av
      copying av/__main__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/video
      copying av/video/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/video
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/codec
      copying av/codec/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/codec
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/container
      copying av/container/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/container
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/audio
      copying av/audio/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/audio
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/subtitles
      copying av/subtitles/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/subtitles
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/filter
      copying av/filter/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/filter
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/sidedata
      copying av/sidedata/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/sidedata
      creating build/lib.macosx-12.4-x86_64-cpython-39/av/data
      copying av/data/__init__.py -> build/lib.macosx-12.4-x86_64-cpython-39/av/data
      running build_ext
      running config
      PyAV: 8.0.2 (unknown commit)
      Python: 3.9.10 (main, Jun 28 2022, 17:49:16) \n[Clang 13.1.6 (clang-1316.0.21.2.5)]
      platform: macOS-12.4-x86_64-i386-64bit
      extension_extra:
          include_dirs: [b'include']
          libraries: []
          library_dirs: []
          define_macros: []
          runtime_library_dirs: []
      config_macros:
          PYAV_COMMIT_STR="unknown-commit"
          PYAV_VERSION=8.0.2
          PYAV_VERSION_STR="8.0.2"
      Could not find libavformat with pkg-config.
      Could not find libavcodec with pkg-config.
      Could not find libavdevice with pkg-config.
      Could not find libavutil with pkg-config.
      Could not find libavfilter with pkg-config.
      Could not find libswscale with pkg-config.
      Could not find libswresample with pkg-config.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: legacy-install-failure

× Encountered error while trying to install package.
╰─> av


  


  I have already tried suggested fixes, but no luck :
https://github.com/openvinotoolkit/cvat/issues/4406

  


  Environment :

  


  

  • MacBook Pro (Intel x64)

  


  • macOS Monterey (Version 12.4)

  


  • (pyenv) Python 3.9.10

  


  


  What other options could be applied to fix it ?

  


• ffmpeg development recompile only changed part on windows

  8 décembre 2020, par Harry

  New to ffmpeg development, i am trying to develop a patch for a specific demuxer in avformat and sure i want to be able to test my changes without recompiling all parts of ffmpeg again as it takes about an hour. My toolchain is set up as per https://ffmpeg.org/platform.html 4.1.1. Using mingw64.exe, it was no problem to compile an initial version :

  


  ./configure --disable-static --enable-shared --enable-gpl
make -j4


  


  Voila, i have a shared build, means the .exe and .dll files are built and i can run the program successfully.

  


  Now when i change some code , e.g. in libavformat/pcm.c, i can recompile this part easily by doing

  


  make pcm.o


  


  make will even recognize automatically if there were changes to the code and only rebuild the single .o file. But when executing make in the root path of the ffmpeg source again, it will always recompile all .o files which of course something i want to avoid.

  


  I tried disabling some components e.g. by doing

  


  ./configure --disable-static --enable-shared --enable-avisynth --enable-gpl --disable-avcodec --disable-avdevice --disable-avfilter


  


  But this way, i am only getting a new avutil.dll, avscale.dll and avresample.dll but no avformat.dll (which i dont understand because i dont disable avformat), also it seems to recompile the parts instead of re-using and just link the existing .o files together.

  


  How could i tell the make command not to compile anything but instead just link all the existing .o files - and only for avformat instead of all parts ?

  


• Can't invoke FFmpeg.getInstance in Android Java development [on hold]

  18 août 2019, par BoredDev

  I’m trying to use FFmpeg in Android Studio but i cant invoke some methods :

  1) FFmpeg ffmpeg = FFprobe.getInstance(context) ;

  Method getInstance don’t "exist"

  2) ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler()

  ExecuteBinaryResponseHandler don’t exist

  However i tried to execute ffmpeg.execute and everything works fine.

  To "install" FFmpeg i did what i found in https://github.com/bravobit/FFmpeg-Android
  For that i mean : i included dependencies in gradle

  dependencies {
  
      implementation 'nl.bravobit:android-ffmpeg:1.1.7'
  
  }

  And that’s it...

  Here is the code that FFmpeg works(but notice that i’m not invoking "execute" with FFmpeg object)

          // FFmpeg ffmpeg = FFmpeg.getInstance(MainActivity.this);
  
          // Line above returns Cant resolve method and can't build...
  
  
  
          Runnable mergemovie = new Runnable() {
  
              @Override
  
              public void run() {
  
                  String f1 = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)+ "/Vid1.mp4";
  
                  String output = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)+ "/out.mp4";
  
                  //so i use FFmpeg like below
  
                  FFmpeg.execute("-i " + f1 + " -q 5 " + output); // just reducing video quality
  
              }
  
          };
  
          Thread t = new Thread(mergemovie);
  
          t.start();

  I really need to getInstance and new ExecuteBinaryResponseHandler() working because i want to check if the commands given were successfull...

  Thanks guys for any help !