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Autres articles (21)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (4284)

  • Read a growing MFX file for live streaming sports match file [closed]

    12 novembre 2024, par Sumit Chaudhary

    I'm struggling to read a growing MXF file in real time for a live sports streaming project in python. I can read the video in 5-minute chunks provided by the recording software, for the same match and I’m able to load the full file (around 750GB) once the match is over and file is complete. However, I need to process the file as it’s still growing. Any suggestions on how to approach this ?

    


  • OpenCV3.1 compilation error 'ffmpeg/avformat.h' file not found

    15 décembre 2016, par aquagremlin

    On MacOS 10.9.5 Mavericks. I used homebrew to install Python, cmake, ffmpeg.
    Entering ffmpeg in terminal shows it is installed.
    I downloaded Opencv3 and opencv_contrib

    Then cmake with this :

    cmake -D CMAKE_BUILD_TYPE=RELEASE \
    
    -D WITH_CUDA=OFF -D CMAKE_INSTALL_PREFIX=/Users/stefan/Downloads/opencv-3.1.0dl/build \
    
    -D PYTHON2_LIBRARIES=/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/bin \
    
    -D PYTHON2_PACKAGES_PATH=~/.virtualenvs/cv/lib/python2.7/site-packages \
    
    -D PYTHON2_NUMPY_INCLUDE_DIRS=~/.virtualenvs/cv/lib/python2.7/site-packages/numpy/core/include \
    
    -D PYTHON2_INCLUDE_DIR=/usr/local/Frameworks/Python.framework/Headers \
    
    -D INSTALL_PYTHON_EXAMPLES=ON -D WITH_TBB=ON  -D INSTALL_C_EXAMPLES=ON \
    
    -D FFMPEG_INCLUDE_DIR=/usr/local/Cellar/ffmpeg/3.0.2/include \
    
    -D FFMPEG_LIB_DIR=/usr/local/Cellar/ffmpeg/3.0.2/lib \
    
    -D BUILD_EXAMPLES=ON \
    
    -D OPENCV_EXTRA_MODULES_PATH=~/Downloads/opencv_contrib-3.0.0/modules ..

    Terminal output included this :

    --   Video I/O:
    
--     DC1394 1.x:                  NO
    
--     DC1394 2.x:                  NO
    
--     FFMPEG:                      YES
    
--       codec:                     YES (ver 57.24.102)
    
--       format:                    YES (ver 57.25.100)
    
--       util:                      YES (ver 55.17.103)
    
--       swscale:                   YES (ver 4.0.100)
    
--       resample:                  YES (ver 3.0.0)
    
--       gentoo-style:              YES

    But CMakeError.log had this as its only error :

    ffmpeg/avformat.h file not found

    The file does exist at

    /usr/local/Cellar/ffmpeg/3.0.2/include/libavformat/avformat.h

    I do not understand why I am getting this error if I properly specified the FFMPEG include directories in the cmake command. Also the variables FMPEG_INCLUDE_DIR and FFMPEG_LIB_DIR do not exist in the file, CMakeLists.txt.
    Does that make my use of those variables in the cake command useless ?

  • Read a Bytes image from Amazon Kinesis output in python

    14 février 2020, par Varun_Rathinam

    I used imageio.get_reader(BytesIO(a),  'ffmpeg') to load a bytes image and save it as normal image.

    But the below error throws when I read the image using imageio.get_reader(BytesIO(a),  'ffmpeg')

    Traceback (most recent call last):
    
  File "<stdin>", line 1, in <module>
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/core/functions.py", line 186, in get_reader
    
    return format.get_reader(request)
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/core/format.py", line 164, in get_reader
    
    return self.Reader(self, request)
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/core/format.py", line 214, in __init__
    
    self._open(**self.request.kwargs.copy())
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/plugins/ffmpeg.py", line 323, in _open
    
    self._initialize()
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/plugins/ffmpeg.py", line 466, in _initialize
    
    self._meta.update(self._read_gen.__next__())
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio_ffmpeg/_io.py", line 150, in read_frames
    
    raise IOError(fmt.format(err2))
    
OSError: Could not load meta information
    
=== stderr ===
    

    
ffmpeg version 4.2 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 7.3.0 (crosstool-NG 1.23.0.449-a04d0)
    
  configuration: --prefix=/home/tango/anaconda3 --cc=/home/conda/feedstock_root/build_artifacts/ffmpeg_1566210161358/_build_env/bin/x86_64-conda_cos6-linux-gnu-cc --disable-doc --disable-openssl --enable-avresample --enable-gnutls --enable-gpl --enable-hardcoded-tables --enable-libfreetype --enable-libopenh264 --enable-libx264 --enable-pic --enable-pthreads --enable-shared --enable-static --enable-version3 --enable-zlib --enable-libmp3lame
    
  libavutil      56. 31.100 / 56. 31.100
    
  libavcodec     58. 54.100 / 58. 54.100
    
  libavformat    58. 29.100 / 58. 29.100
    
  libavdevice    58.  8.100 / 58.  8.100
    
  libavfilter     7. 57.100 /  7. 57.100
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  5.100 /  5.  5.100
    
  libswresample   3.  5.100 /  3.  5.100
    
  libpostproc    55.  5.100 / 55.  5.100
    
[matroska,webm @ 0x5619b9da3cc0] File ended prematurely
    
[matroska,webm @ 0x5619b9da3cc0] Could not find codec parameters for stream 0 (Video: h264, none, 1280x720): unspecified pixel format
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, matroska,webm, from '/tmp/imageio_zm6hhpgr':
    
  Metadata:
    
    title           : Kinesis Video SDK
    
    encoder         : Kinesis Video SDK 1.0.0
    
    AWS_KINESISVIDEO_FRAGMENT_NUMBER: 91343852333183888465720004820715065721442989478
    
    AWS_KINESISVIDEO_SERVER_TIMESTAMP: 1580791384.096
    
    AWS_KINESISVIDEO_PRODUCER_TIMESTAMP: 1580791377.843
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0(eng): Video: h264, none, 1280x720, SAR 1:1 DAR 16:9, 1k tbr, 1k tbn, 2k tbc (default)
    
    Metadata:
    
      title           : kinesis_video
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native))
    
Press [q] to stop, [?] for help
    
Cannot determine format of input stream 0:0 after EOF
    
Error marking filters as finished
    
Conversion failed!
    
</module></stdin>

    The above approach to read a MKV bytes file was done based on this thread

    Or is there is any approach to parse and read the MKV bytes file.

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