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• Stream map '0:4' matches no streams

  17 juillet 2022, par Hugh

  When concat vob files to mkv with -map 0:4 I get this error. if I replace it with -map 0:4 ? the output contains no subtitles because the subtitle track I want doesn't start until further into the file. If I include -map 0:3 I just get the wrong subtitle track.

  


  ffmpeg -version
ffmpeg version 5.0.1-Jellyfin Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --prefix=/usr/lib/jellyfin-ffmpeg --target-os=linux --extra-libs=-lfftw3f --extra-version=Jellyfin --disable-doc --disable-ffplay --disable-ptx-compression --disable-shared --disable-libxcb --disable-sdl2 --disable-xlib --enable-lto --enable-gpl --enable-version3 --enable-static --enable-gmp --enable-gnutls --enable-chromaprint --enable-libdrm --enable-libass --enable-libfreetype --enable-libfribidi --enable-libfontconfig --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libdav1d --enable-libwebp --enable-libvpx --enable-libx264 --enable-libx265 --enable-libzvbi --enable-libzimg --enable-libfdk-aac --arch=amd64 --enable-libshaderc --enable-libplacebo --enable-vulkan --enable-opencl --enable-vaapi --enable-amf --enable-libmfx --enable-ffnvcodec --enable-cuda --enable-cuda-llvm --enable-cuvid --enable-nvdec --enable-nvenc
libavutil      57. 17.100 / 57. 17.100
libavcodec     59. 18.100 / 59. 18.100
libavformat    59. 16.100 / 59. 16.100
libavdevice    59.  4.100 / 59.  4.100
libavfilter     8. 24.100 /  8. 24.100
libswscale      6.  4.100 /  6.  4.100
libswresample   4.  3.100 /  4.  3.100
libpostproc    56.  3.100 / 56.  3.100


ffmpeg -analyzeduration 9000M -probesize 9000M -f concat -fflags +genpts -i mylist.txt -map 0:1 -map 0:2 -map 0:4? -metadata:s:s:0 language=eng -metadata:s:s:0 title="English" -c:s copy -c:v copy -c:a copy 'output.mkv'
...
Input #0, concat, from 'mylist.txt':
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Data: dvd_nav_packet
  Stream #0:1: Video: mpeg2video (Main), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn
    Side data:
      cpb: bitrate max/min/avg: 7000000/0/0 buffer size: 1835008 vbv_delay: N/A
  Stream #0:2: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  Stream #0:3: Subtitle: dvd_subtitle
Output #0, matroska, to 'output.mkv':
  Metadata:
    encoder         : Lavf59.16.100
  Stream #0:0: Video: mpeg2video (Main) (mpg2 / 0x3267706D), yuv420p(tv, top first), 720x576 [SAR 64:45 DAR 16:9], q=2-31, 25 fps, 25 tbr, 1k tbn
    Side data:
      cpb: bitrate max/min/avg: 7000000/0/0 buffer size: 1835008 vbv_delay: N/A
  Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 192 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[concat @ 0x555af2e17000] New subtitle stream 0:4 at pos:3141646 and DTS:10.96s  0x


  


  ...
Any ideas ?

  


• FFMEPG - How to resolve 'Reinit context to WxH ... deprecated pixel format'

  30 juin 2022, par hi im Bacon

  I am using the pyav library to read and process video data and as I am reading through the videos I am getting lots (and lots) of the following output.

  


  I am creating the videos by segmenting either a much larger source file or RTSP/HTTP IP camera.

  


  I would love to understand what this output actually means, and what I can do to prevent its output

  


  ffmpeg creating videos :

  


  ffmpeg -y -i https://manifest.googlevideo.com/api/... -pix_fmt yuvj422p -c:v libx264 -an -vf scale='min(1280,iw)':'min(720,ih)':force_original_aspect_ratio=decrease -r 12 -vsync cfr -x264opts keyint=12:min-keyint=12 -f segment -segment_format matroska -segment_time 5 -initial_offset 1656497474.686672 -strftime 1 /tmp/tmp87cc1n2o/%Y-%m-%dT%H%M%S.mkv -loglevel error


  


  python :

  


  container = av.open(io.BytesIO(...))
for frame in container.decode(video=0):
   ...


  


  2022-06-30 14:45:00,964 DEBUG:****:Creating <***.core.generators.av.AVGenerator object at 0x7f13340abd50> with target path: <_io.BytesIO object at 0x7f13341c93b0>
2022-06-30 14:45:00,966 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:00,966 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuvj422p
2022-06-30 14:45:00,984 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:01,045 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:01,046 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuvj422p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 9 more times)
2022-06-30 14:45:01,194 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
2022-06-30 14:45:01,215 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 17 more times)
2022-06-30 14:45:01,384 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 3 more times)
2022-06-30 14:45:01,398 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 22 more times)
2022-06-30 14:45:01,550 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 2 more times)
2022-06-30 14:45:01,592 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p


  


• 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 ?