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Mot : - Tags -/open film making

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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 (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

Sur d’autres sites (9485)

  • How to filter motion vectors ?

    2 août 2019, par vdletg

    My video is very noisy temporally. The video was taken under low light conditions at a high frame rate.

    Currently I’ve tried

    ffplay -flags2 +export_mvs -i test.mp4 -vf edgedetect=low=0.05:high=0.17,hqdn3d=4.0:3.0:6.0:4.5,codecview=mv=pf+bf+bb,"lutyuv=y='if(lt(val,19),0,val)'

    The motion vectors are tracking noise as in the near dark areas the vectors varying greatly in magnitude and angle.

    How do I decimate or filter the display motion vectors based on magnitude and/or location ?

  • fate : use current syntax for the scale filter

    10 juillet 2013, par Sean McGovern
    fate : use current syntax for the scale filter

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] tests/fate/filter-video.mak
    • [DH] tests/fate/h264.mak

  • ffmpeg lowpass filter increase roll off

    23 mars 2020, par Ancoron

    I have converted one of my old SACD’s to 352kHz FLAC, but due to the nature of DSD, a lot of noise is added to the higher frequencies, which are outside the audible range, but consume quite some disk space.

    352kHz FLAC - no lowpass filter

    So I thought I’d use the simple lowpass filter to get rid of it, like this :

    ffmpeg -i input.dsf -af "lowpass=26000" output.flac

    However, the result is that the noise is still there, but only lowered in volume :

    352kHz FLAC - with lowpass applied

    Is there a way to increase the roll-off of the filter or another way to get up to -140 dB at 48 kHz ?

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