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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 ?

  


• avcodec/startcode : Avoid unaligned accesses

  21 janvier 2020, par Andreas Rheinhardt

  avcodec/startcode : Avoid unaligned accesses
  Up until now, ff_startcode_find_candidate_c() simply casts
  
  an uint8_t* to uint64_t*/uint32_t* to read 64/32 bits at a time
  
  in case HAVE_FAST_UNALIGNED is true. Yet this ignores the
  
  alignment requirement of these types as well as effective type
  
  rules of the C standard. This commit therefore replaces these
  
  direct accesses with AV_RN64/32 ; this also improves
  
  readability.
  UBSan reported these unaligned accesses which happened in 233
  
  FATE-tests involving H.264 and VC-1 (this has also been reported
  
  in tickets #8138 and #8485) ; these tests are fixed by this commit.
  The output of GCC with -O3 is unchanged for aarch64, loongarch,
  
  ppc and x64 (as well as for arches like alpha for which
  
  HAVE_FAST_UNALIGNED is never true in the first place).
  
  There was only a slight difference for mips and arm.
  
  I don't know about the speed impact of them.
  Reviewed-by : Anton Khirnov <anton@khirnov.net>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/startcode.c

• FFmpeg : use absolute path in "metadata=print:file="

  27 octobre 2022, par Axel Herrmann

  I'm using FFmpeg to extract frames of a video and therefore I want to print the metadata of the video to a text file first (to get the scene\ value of each frame).

  


  This already works for me with something like :

  


  ffmpeg -i input.mp4 -vf "select='gte(scene,0)',metadata=print:file=scenescores.txt" -an -f null -


  


  Because I'm using all this inside of a Java application I want to pass an absolute path (of an temp directory) to print:file= instead of the currently relative one which will write it to the root directory of the project.

  


  But when I try to specify an absolute path like D:\scenescores.txt I get the following error :

  


  [metadata @ 00000203282ff0c0] Unable to parse option value "scenescores.txt" as boolean
[metadata @ 00000203282ff0c0] Error setting option direct to value scenescores.txt.
[Parsed_metadata_1 @ 00000203269bdf00] Error applying options to the filter.
[AVFilterGraph @ 0000020328020840] Error initializing filter 'metadata' with args 'print:file=D:\scenescores.txt'


  


  Is there any way to achieve printing to an absolute path ? Am I missing some escape rules or something ?