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Medias (91)

Other articles (23)

  • Websites made ​​with MediaSPIP

    2 May 2011, by

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 April 2011, by

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things): implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Other interesting software

    13 April 2011, by

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website: http://videopress.com/
    License: GNU/GPL v2
    Source code: (...)

On other websites (5725)

  • lavc/vaapi_encode: grow packet if vaMapBuffer returns multiple buffers

    31 May 2019, by Linjie Fu
    lavc/vaapi_encode: grow packet if vaMapBuffer returns multiple buffers

    Currently, assigning new buffer for pkt when multiple buffers were returned
    
from vaMapBuffer will overwrite the previous encoded pkt data and lead
    
to encode issues.
    

    Iterate through the buf_list first to find out the total buffer size
    
needed for the pkt, allocate the whole pkt to avoid repeated reallocation
    
and memcpy, then copy data from each buf to pkt.
    

    Signed-off-by: Linjie Fu <linjie.fu@intel.com>
    • [DH] libavcodec/vaapi_encode.c

  • Remove unreachable returns

    14 February 2013, by Diego Biurrun
    Remove unreachable returns
    • [DBH] libavformat/flvdec.c
    • [DBH] libavformat/nutenc.c

  • tf.contrib.signal.stft returns an empty matrix

    9 December 2017, by matt-pielat

    This is the piece of code I run:

    import tensorflow as tf
    

    
sess = tf.InteractiveSession()
    

    
filename = 'song.mp3' # 30 second mp3 file
    
SAMPLES_PER_SEC = 44100
    

    
audio_binary = tf.read_file(filename)
    

    
pcm = tf.contrib.ffmpeg.decode_audio(audio_binary, file_format='mp3', samples_per_second=SAMPLES_PER_SEC, channel_count = 1)
    
stft = tf.contrib.signal.stft(pcm, frame_length=1024, frame_step=512, fft_length=1024)
    

    
sess.close()

    The mp3 file is properly decoded because print(pcm.eval().shape) returns:

    (1323119, 1)

    And there are even some actual non-zero values when I print them with print(pcm.eval()[1000:1010]):

    [[ 0.18793298]
    
 [ 0.16214484]
    
 [ 0.16022217]
    
 [ 0.15918455]
    
 [ 0.16428113]
    
 [ 0.19858395]
    
 [ 0.22861415]
    
 [ 0.2347789 ]
    
 [ 0.22684409]
    
 [ 0.20728172]]

    But for some reason print(stft.eval().shape) evaluates to:

    (1323119, 0, 513) # why the zero dimension?

    And therefore print(stft.eval()) is:

    []

    According to this the second dimension of the tf.contrib.signal.stft output is equal to the number of frames. Why are there no frames though?

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