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Médias (5)

Mot : - Tags -/open film making

Autres articles (36)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

Sur d’autres sites (7167)

  • Why is PowerShell Eating my Dash

    11 novembre 2017, par gvkv

    In a directory vidtemp with files : G*53.mp4 (a series of GoPro videos) using PowerShell 5.0 :

    PS C:\Users\gvkv\vidtemp $sources = Get-ChildItem -Filter *53*
    
PS C:\Users\gvkv\vidtemp $vin = [String]::Join(" ", $($sources | %{"-i $($_.Name)"}))
    
PS C:\Users\gvkv\vidtemp $vin
    
-i GOPR0053.MP4 -i GP010053.MP4 -i GP020053.MP4 -i GP030053.MP4 -i GP040053.MP4 -i GP050053.MP4
    

    
PS C:\Users\gvkv\Videos\hockeytemp\tt\trw> $concat = [String]::Join(" ", `
    
>> $(0..$($sources.count-1) | `
    
>> %{"[$($_):v:0] [$($_):a:0]"}) + "concat=n=$($sources.count):v=1:a=1 [v] [a]" `
    
>> )
    
PS C:\Users\gvkv\vidtemp $concat
    
PS C:\Users\gvkv\vidtemp [0:v:0] [0:a:0] [1:v:0] [1:a:0] [2:v:0] [2:a:0] [3:v:0] [3:a:0] [4:v:0] [4:a:0] [5:v:0] [5:a:0] concat=n=6:v=1:a=1 [v] [a]
    
PS C:\Users\gvkv\vidtemp ffmpeg $vin `
    
>> -filter_complex $concat -map '[v]' -map '[a]' `
    
>> -c:v -crf 21 -preset slow 
    
>> out.53.mp4
    
...
    
Unrecognized option 'i GOPR0053.MP4 -i GP010053.MP4 -i GP020053.MP4 -i GP030053.MP4 -i GP040053.MP4 -i GP050053.MP4'. 
    
ndError splitting the argument list: Option not found

    Note there’s no "-" on the first i. What’s happening and what do I do about it ?

  • EC2 for video-encoding

    4 avril 2019, par Naftuli Kay

    I have a potential job which will require me to do some video encoding with FFMPEG and x264. I’ll have a series of files which I’ll need to encode once, then I’ll be able to bring down the instances. Since I’m not really sure of the resource utilization of x264 and FFMPEG, what kind of instances should I get ? I’m thinking either a

    High-CPU Extra Large Instance

    7 GB of memory
    20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each)
    1690 GB of instance storage
    64-bit platform
    I/O Performance : High
    API name : c1.xlarge

    or, alternatively a

    Cluster GPU Quadruple Extra Large Instance

    22 GB of memory
    33.5 EC2 Compute Units (2 x Intel Xeon X5570, quad-core “Nehalem” architecture)
    2 x NVIDIA Tesla “Fermi” M2050 GPUs
    1690 GB of instance storage
    64-bit platform
    I/O Performance : Very High (10 Gigabit Ethernet)
    API name : cg1.4xlarge

    What should I use ? Does x264/FFMPEG perform better with faster/more CPUs or does it really pound the GPU more ? In any case, it seems that the Cluster GPU seems to be the higher performance instance. What should I prefer ?

  • EC2 for video-encoding

    3 mars 2022, par Naftuli Kay

    I have a potential job which will require me to do some video encoding with FFMPEG and x264. I'll have a series of files which I'll need to encode once, then I'll be able to bring down the instances. Since I'm not really sure of the resource utilization of x264 and FFMPEG, what kind of instances should I get ? I'm thinking either a

    



    


    High-CPU Extra Large Instance

    
 


    7 GB of memory
    
 20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each)
    
 1690 GB of instance storage
    
 64-bit platform
    
 I/O Performance : High
    
 API name : c1.xlarge

    


    



    or, alternatively a

    



    


    Cluster GPU Quadruple Extra Large Instance

    
 


    22 GB of memory
    
 33.5 EC2 Compute Units (2 x Intel Xeon X5570, quad-core “Nehalem” architecture)
    
 2 x NVIDIA Tesla “Fermi” M2050 GPUs
    
 1690 GB of instance storage
    
 64-bit platform
    
 I/O Performance : Very High (10 Gigabit Ethernet)
    
 API name : cg1.4xlarge

    


    



    What should I use ? Does x264/FFMPEG perform better with faster/more CPUs or does it really pound the GPU more ? In any case, it seems that the Cluster GPU seems to be the higher performance instance. What should I prefer ?

    


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