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  • Les statuts des instances de mutualisation

    13 mars 2010, par

    Pour des raisons de compatibilité générale du plugin de gestion de mutualisations avec les fonctions originales de SPIP, les statuts des instances sont les mêmes que pour tout autre objets (articles...), seuls leurs noms dans l’interface change quelque peu.
    Les différents statuts possibles sont : prepa (demandé) qui correspond à une instance demandée par un utilisateur. Si le site a déjà été créé par le passé, il est passé en mode désactivé. publie (validé) qui correspond à une instance validée par un (...)

  • L’espace de configuration de MediaSPIP

    29 novembre 2010, par

    L’espace de configuration de MediaSPIP est réservé aux administrateurs. Un lien de menu "administrer" est généralement affiché en haut de la page [1].
    Il permet de configurer finement votre site.
    La navigation de cet espace de configuration est divisé en trois parties : la configuration générale du site qui permet notamment de modifier : les informations principales concernant le site (...)

  • 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 (...)

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  • FFmpeg reverse long audio hang randomly in Android

    23 mars 2021, par Michael

    I am writing an Android APP, underneath I simply use FFmpeg command to reverse the audio.

    


    The command is simple like :ffmpeg -loglevel debug -debug_ts -i /sdcard/.m4a -af areverse /sdcard/longaudio.aac

    


    If the audio is short, everything works fine, but if the audio longer than 10 mins, the thread will hang(sleep) randomly at some places. The log shows input processing stop in middle at some pkt_pts, every time stop at different ptk_pts. The whole app will therefore hang in there.

    


    If I simply do conversion "ffmpeg -loglevel debug -debug_ts -i /sdcard/.m4a -codec:a aac /sdcard/longaudio.aac" it will work.

    


    Some debug steps I did :

    


      


    1. The memory and cpu usage is normal, it seems the ffmpeg just suddenly decide to take a rest during reverse the long audio :(

      


      2. 


    2. the IO shouldn't be fulled, I commented out the logs still not ok.

      


      3. 


    3. I see a lot "cur_dts is invalid (this is harmless if it occurs once at the start per stream)", but it also showed in normal cases.

      


      4. 


    


    I know the description is kind of ambiguous, but I am so desperate. Anything I don't know about the audio reverse is welcome.

    


  • ffmpeg "ignore_loop 0" seems not work on specific gif

    16 mars 2023, par Peter.k

    I use code which worked for every gif I used to embed it within a video :

    


    ffmpeg -i e:\tt121b+.mp4 -ignore_loop 0 -i e:\gals\1\gif.gif -filter_complex "[1:v][0:v]scale2ref=oh*mdar:ih/10[ua][b];[ua]setsar=1,format=yuva420p,colorchannelmixer=aa=0.5[u];[b][u]overlay=(main_w-w)-(main_w*0.1):(main_h-h)-(main_h*0.125):shortest=1" -r 25 -b:v 1500k e:/tt121_logo.mp4


    


    It literally adds an animated image to video on specified place and with chosen size. But when I add a gif which has 180 frames it behaves weirdly. After 15 seconds the gif is looped one, then it stops and the whole video stops but program still codes it to the end but with higher speed. Additionally, the ram is used to the maximum after this breakdown.

    


    What's going on there ? Should I put some additional parameters ? I tried to add -loop 0, -loop 1 in different places and also removed shortest=1 parameter but its either does nothing or the gif have 1 loop and stops.

    


    EDIT

    


    Found the problem. I opened this gif in first found editor and saw that it was not saved as looped infinitely. Saved it in that format and it works. Didn't know the ffmpeg -loop parameters don't make it. However, this unlooped gif worked as looped in preview software to add more mess to the topic.

    


  • avcodec/wmalosslessdec : Fix multiple integer overflows

    9 janvier 2020, par Michael Niedermayer
    avcodec/wmalosslessdec : Fix multiple integer overflows

    Fixes : left shift of 3329 by 20 places cannot be represented in type 'int'
    
Fixes : signed integer overflow : -199378355 + -1948950833 cannot be represented in type 'int'
    
Fixes : 19837/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5752565837070336
    
Fixes : 19839/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5767483265122304
    

    Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/wmalosslessdec.c

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