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Autres articles (81)

  • Encoding and processing into web-friendly formats

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    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).
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  • La gestion des forums

    3 novembre 2011, par

    Si les forums sont activés sur le site, les administrateurs ont la possibilité de les gérer depuis l’interface d’administration ou depuis l’article même dans le bloc de modification de l’article qui se trouve dans la navigation de la page.
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    Lorsqu’il est identifié sur le site, l’administrateur peut procéder de deux manières pour gérer les forums.
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Sur d’autres sites (3487)

  • Video files are not opening for sample applications in Info Sphere Streams

    10 mars 2017, par Pavan Kumar

    I am new to IBM Info Sphere Streams, I read an article which says IBM Info Sphere streams is capable of doing Image processing. After some research I got to know that, we have to install OpenCV and FFMpeg lybraries with its dependecies. I have installed all of them and tried sample applications. I can run applications which contains Images as input, but when it comes to processing with videos it’s not working. I am unable to use x11viewer operator as well. I am getting the following error while working with sample videos.

    (Streams com.ibm.streamsx.opencv::X11Viewer operator:7889): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed
    
28 Feb 2017 14:00:34.672 [7889] ERROR #splapptrc,J[0],P[0],vid0,spl_pe M[PEImpl.cpp:process:1270]  - CDISR5079E: An exception occurred during the processing of the processing element. The error is: Unable to open camera {0}.

    I did not install any GPU device drivers here but when I used the following commands I am getting results like below,

    [streamsadmin@streamsqse output]$ lspci | grep VGA
    
00:0f.0 VGA compatible controller: VMware SVGA II Adapter
    

    
[streamsadmin@streamsqse output]$ find /dev -group video
    
/dev/fb0
    
/dev/dri/card0
    
/dev/dri/renderD128
    
/dev/dri/controlD64
    
/dev/agpgart

    and

    glxinfo | grep -i vendor
    
server glx vendor string: SGI
    
client glx vendor string: Mesa Project and SGI
    
OpenGL vendor string: VMware, Inc

    My doubt here is, whether I have installed GPU Drivers properly or do I need to install them again ? Can anyone help me to resolve this issue.

    And I am unable to open those videos by using any player as well.

  • lavfi/scale_qsv : change alignment to be 16 bytes

    30 juillet 2019, par Zhong Li
    lavfi/scale_qsv : change alignment to be 16 bytes

    32 bytes alignment is not needed and increases the failure possibilty of
    
SFC (low power scaling mode)
    

    Signed-off-by : Zhong Li <zhong.li@intel.com>
    • [DH] libavfilter/vf_scale_qsv.c

  • What is the reason for getting libavcodec AVpacket presentation time as 0 ?

    13 août 2019, par Chamara Manoj

    Recently I am using FFmpeg library with VS 2017 decode and encode some video data. I used the example codes given with FFmpeg lib packages, transcoding.c.

    After encoding the video I was trying to extract the frames of the encoded and muxed video.mp4. However, when I read the frames using av_read_frame (AVFormatContext *s, AVPacket *pkt), in the last received frame, pts and dts times are both 0.

    What could be the reason for this ? My Video is playing smoothly and I have used H265 codec.

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