Recherche avancée

Médias (1)

Mot : - Tags -/book

Autres articles (48)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (9749)

  • AAC encoder : refactor to resynchronize MIPS port

    15 septembre 2015, par Claudio Freire
    AAC encoder : refactor to resynchronize MIPS port

    This patch refactors the AAC coders to reuse code
    
between the MIPS port and the regular, portable C code.
    
There were two main functions that had to use
    
hand-optimized versions of quantization code :
    
 - search_for_quantizers_twoloop
    
 - codebook_trellis_rate
    

    Those two were split into their own template header
    
files so they can be inlined inside both the MIPS port
    
and the generic code. In each context, they’ll link
    
to their specialized implementations, and thus be
    
optimized by the compiler.
    

    This approach I believe is better than maintaining
    
several copies of each function. As past experience has
    
proven, having to keep those in sync was error prone.
    
In this way, they will remain in sync by default.
    

    Also, an implementation of the dequantized output
    
argument for the optimized quantize_and_encode
    
functions is included in the patch. While the current
    
implementation of search_for_pred still isn’t using
    
it, future iterations of main prediction probably will.
    
It should not imply any measurable performance hit while
    
not being used.
    • [DH] libavcodec/aaccoder.c
    • [DH] libavcodec/aaccoder_trellis.h
    • [DH] libavcodec/aaccoder_twoloop.h
    • [DH] libavcodec/aacenc_quantization.h
    • [DH] libavcodec/mips/aaccoder_mips.c
    • [DH] tests/fate/aac.mak

  • Error while displaying RTP stream packets from udp port on Gstreamer

    20 octobre 2015, par Gaurav Singla

    I am streaming a live webcam using VLC to darwin streaming server.

    Then tried to play this live web cam feed on RTSP client using following

    GST_DEBUG=2 gst-launch -vvv playbin uri=rtsp ://172.19.91.21/channel.sdp

    Everthing works fine. output is coming on gstreamer window.

    I have reflect all the packest from DSS to RTSP client as well as on a udp_port. But when i tried to play RTP stream using following command

    GST_DEBUG=2 gst-launch-0.10 -vvv udpsrc port=5000 multicast-iface="lo" multicast-group="172.19.91.20" buffer-size=1000000 caps="application/x-rtp, media=video, clock-rate=90000, encoding-name=H264" do-timestamp=false ! rtph264depay ! decodebin ! autovideosink

    I am getting following errors

    0:00:07.108734201 7874 0x89d2a90 ERROR ffmpeg :0: : non-existing PPS referenced
    0:00:07.108803500 7874 0x89d2a90 ERROR ffmpeg :0: : non-existing PPS 0 referenced
    0:00:07.108824183 7874 0x89d2a90 ERROR ffmpeg :0: : decode_slice_header error
    0:00:07.108840903 7874 0x89d2a90 ERROR ffmpeg :0: : no frame !
    0:00:07.108859244 7874 0x89d2a90 WARN ffmpeg gstffmpegdec.c:2299:gst_ffmpegdec_frame : ffdec_h264 : decoding error (len : -1, have_data : 0)

    Please guide me how to solve this problem.

  • x86 : port PSIGNW to cpuflags

    12 septembre 2015, par James Almer
    x86 : port PSIGNW to cpuflags

    Reviewed-by : Ronald S. Bultje <rsbultje@gmail.com>
    
Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] libavcodec/x86/vp9itxfm.asm
    • [DH] libavutil/x86/x86util.asm

Navigation