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  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
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Sur d’autres sites (8033)

  • change wav, aiff or mov audio sample rate of MOV or WAV WITHOUT changing number of samples

    6 mars 2013, par John Pilgrim

    I need a very precise way to speed up audio.
    I am preparing films for OpenDCP, an open-source tool to make Digital Cinema Packages, for screening in theaters.
    My source files are usually quicktime MOV files at 23.976fps with 48.000kHz audio.
    Sometimes my audio is a separate 48.000kHz WAV.
    (FWIW, the video frame rate of the source is actually 24/100.1 frames per second, which is a repeating decimal.)

    The DCP standard is based around a 24.000fps and 48.000kHz program, so the audio and video of the source need to be sped up.
    The image processing workflow inherently involves converting the MOV to a TIF sequence, frame-per-frame, which is then assumed to be 24.000fps, so I don't have to get involved in the internals of the QT Video Media Handler.

    But speeding up the audio to match is proving to be difficult. Most audio programs cannot get the number of audio samples to line up with the retimed image frames. A 0.1% speed increase in Audacity results in the wrong number of samples. The only pathway that I have found that works is to use Apple Cinema Tools to conform the 23.976fps/48.000kHz MOV to 24.000fps/48.048kHz (which it does by changing the Quicktime headers) and then using Quicktime Player to export the audio from that file at 48.000kHz, resampling it. This is frame accurate.

    So my question is : are there settings in ffmpeg or sox that will precisely speed up the audio in a MOV or in a WAV or AIFF precisely ? I would like a cross platform solution, so I am not dependent on Cinema Tools, which is only MacOS.

    I know this is a LOT of background. Feel free to ask clarifying questions !

  • Revision 13c7715a75 : Number of instructions in fdct4_1d_sse2 reduced by two. Mathematically the resu

    23 septembre 2013, par A.Mahfoodh

    Changed Paths :
     Modify /vp9/encoder/x86/vp9_dct_sse2.c



    Number of instructions in fdct4_1d_sse2 reduced by two.

    Mathematically the results are the same.

    Change-Id : I1c5126cd3ca64e8515ca6331e0989c6f7dd651a0

  • Revision bacb5925ff : Merge "Number of instructions in fdct4_1d_sse2 reduced by two."

    24 septembre 2013, par Yunqing Wang

    Merge "Number of instructions in fdct4_1d_sse2 reduced by two."

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