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Autres articles (63)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    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 avril 2011, par

    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 : (...)

Sur d’autres sites (6575)

  • C# Desktop recorder h.264 cross-"computer"

    14 décembre 2013, par rodi

    I was looking for a method with "least requirements" for a maximum compatibility.

    I have seen that there are mainly 2 ways : through directx, through .NET ( only >Win7) but both requires Win7 Or DirectX 9 installed.

    could ffmpeg be useful ? I have tried following this Wiki, but it prompts me :

    > ffmpeg -f dshow -i video="UScreenCapture":audio="Microphone" output.flv
    

    
[dshow @ 00000000003ea700] Could not find video device.
    
video=UScreenCapture: Input/output error

    Any advice ?

  • ffmpeg invalid argument for vp9 encoding

    17 juin 2015, par user3083672

    I’m following the recommended settings for vp9 encoding here : http://wiki.webmproject.org/ffmpeg/vp9-encoding-guide

    Using this command :

    ffmpeg -i test.mp4 -c:v libvpx-vp9 -pass 1 -b:v 1000K -threads 8 -speed 4 \
    
-tile-columns 6 -frame-parallel 1 -auto-alt-ref 1 -lag-in-frames 25 \
    
-an -f webm /dev/null

    produces the following error :

    [NULL @ 0000000005a209c0] Unable to find a suitable output format for '\'
    
\: Invalid argument

    Any ideas ?

  • encode YUV420 frame to VP9

    21 novembre 2018, par User800222

    As title,

    I’m pulling frames from a IP camera. I converted the input raw data to YUV420 format, and would like to encode YUV420 to VP9, and save frames as .webm format. Would I be able to do that ? Or should I input a BGR444 format for encoding ?

    BTW, to set up the parameters for encoding vp9. Is the av_dict_set() the right function for setting parameters ?

    Ex : (http://wiki.webmproject.org/ffmpeg/vp9-encoding-guide)

    av_dict_set(&opt, "crf"    , "23", 0);
    
av_dict_set(&opt, "speed"  , "4" , 0);
    
av_dict_set(&opt, "threads", "8" , 0);
    
av_dict_set(&opt, "pass"   , "1" , 0);
    
av_dict_set(&opt, "b:v", "1400k", 0);

    Edit : The wiki uses 2 pass for setting parameters, would I be able to do in with 1 pass ?

    Edit2 : Blow code seems to be working, wonder how can I bring the size of the videos (vp9) down ? Currently, I have similar size as using h264 encoder.

        av_dict_set(&opt, "crf"    ,        "45", 0);  
    
    av_dict_set(&opt, "speed"  ,        "8" , 0); 
    
    av_dict_set(&opt, "quality",        "realtime", 0);
    
    av_dict_set(&opt, "threads",        "8" , 0);
    
    av_dict_set(&opt, "tile-columns",   "3", 0);
    
    av_dict_set(&opt, "frame-parallel", "1", 0);
    
    av_dict_set(&opt, "row-mt",         "1", 0);

    Update1 :
    YUV420P can be encoded as VP9 !

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