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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 (...)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (6447)

  • Merge commit ’715f139c9bd407ef7f4d1f564ad683140ec61e6d’

    23 mars 2017, par Clément Bœsch
    Merge commit ’715f139c9bd407ef7f4d1f564ad683140ec61e6d’

    * commit ’715f139c9bd407ef7f4d1f564ad683140ec61e6d’ : (23 commits)
    
  vp9lpf/x86 : make filter_16_h work on 32-bit.
    
  vp9lpf/x86 : make filter_48/84/88_h work on 32-bit.
    
  vp9lpf/x86 : make filter_44_h work on 32-bit.
    
  vp9lpf/x86 : make filter_16_v work on 32-bit.
    
  vp9lpf/x86 : make filter_48/84_v work on 32-bit.
    
  vp9lpf/x86 : make filter_88_v work on 32-bit.
    
  vp9lpf/x86 : make filter_44_v work on 32-bit.
    
  vp9lpf/x86 : save one register in SIGN_ADD/SUB.
    
  vp9lpf/x86 : store unpacked intermediates for filter6/14 on stack.
    
  vp9lpf/x86 : move variable assigned inside macro branch.
    
  vp9lpf/x86 : simplify ABSSUM_CMP by inverting the comparison meaning.
    
  vp9lpf/x86 : remove unused register from ABSSUB_CMP macro.
    
  vp9lpf/x86 : slightly simplify 44/48/84/88 h stores.
    
  vp9lpf/x86 : make cglobal statement more conservative in register allocation.
    
  vp9lpf/x86 : save one register in loopfilter surface coverage.
    
  vp9lpf/x86 : add ff_vp9_loop_filter_[vh]_44_16_sse2,ssse3,avx.
    
  vp9lpf/x86 : add ff_vp9_loop_filter_h_48,84_16_sse2,ssse3,avx().
    
  vp9lpf/x86 : add an SSE2 version of vp9_loop_filter_[vh]_88_16
    
  vp9lpf/x86 : add ff_vp9_loop_filter_[vh]_88_16_ssse3,avx.
    
  vp9lpf/x86 : add ff_vp9_loop_filter_[vh]_16_16_sse2().
    
  ...
    

    All these commits are cherry-picks from FFmpeg. Maybe some slight
    
differences sneaked in but the Libav codebase still differs too much
    
with our own to make a proper diff. This merge is a noop.
    

    Merged-by : Clément Bœsch <u@pkh.me>

  • setting bit rates in creating video from images in ffmpeg not working

    2 mai 2014, par mast kalandar

    I have a HQ video of one second

    Some information of this video is as below

    Dimensions : 1920 x 1080    
    
Codec : H.264    
    
Framerate : 30 frames per second    
    
Size : 684.7 kB (6,84,673 bytes)
    
Bitrates : 5458 kbps

    I have extracted frames from video

    ffmpeg -i f1.mp4 f%d.jpg

    All images are of 1920 x 1020 pixels by default 30 frames are generated (f7_1.jpg, f7_2.jpg,.....,f7_30.jpg)

    I have added some texts and objects to these images (without changing dimensions of any image, all 30 images are still of 1920 x 1020 pixels)

    Now I am trying to merge all these images to create single video (of 1 second)

    I referred this official document, I have run below command

    ffmpeg -f image2 -i f7_%d.jpg -r 30 -b:v 5458k foo_5458_2.mp4

    Video created is also of one second, thing is its bit rates are higher then the original one. New video has 6091 kbps bit rates, while I expect are 5458 kbps only.

    Because of higher bits, its gets finish very quickly compare to original video in video player.

    Is there any thing I missing ??

    And I don’t know what is exact meaning and job of -f image2 option, when I run command without this option, I am getting same video.

  • Convert encoded audio file to text with signal values

    15 août 2017, par Niccolò Cirone

    I’ve been programming in c for the first time with audio files. I found this code which supposedly should read an audio file and then write a csv file containing several info in order to analyse the audio waves,that in case will be a simple voice : i’m interested in amplitude of the waves, in the timbre of the voice and its hight and extension.

               main () {   
    
           // Create a 20 ms audio buffer (assuming Fs = 44.1 kHz)
    
           int16_t buf[N] = {0}; // buffer
    
           int n;                // buffer index
    

    
          // Open WAV file with FFmpeg and read raw samples via the pipe.
    
          FILE *pipein;
    
          pipein = popen("ffmpeg -i whistle.wav -f s16le -ac 1 -", "r");
    
          fread(buf, 2, N, pipein);
    
          pclose(pipein);
    

    
          // Print the sample values in the buffer to a CSV file
    
          FILE *csvfile;
    
          csvfile = fopen("samples.csv", "w");
    
          for (n=0 ; n<n></n>code>

    Could someone explain me in detail how can I read an audio file so that I could extract from it the info I need ? Referring to this code, could someone explain me the meaning of the pipe at line 8

    pipein = popen("ffmpeg -i whistle.wav -f s16le -ac 1 -", "r");

    p.s. I already know how to read the header of the audio file, which contains a lot of useful info, but I also want to analyse the entire audio file, sample by sample.

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