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  • 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 (...)

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  • Streaming video over named PIPE with limited "channel" bandwidth

    13 mars 2019, par fmagno

    I have a video container vid.mp4 that I want to play with ffplay through a named PIPE and be able to tweak the maximum bandwidth allowed by the "channel". Follows what I did :

    1. Create a named PIPE :

    mkfifo pipe_in

    2. Send the container to the pipe with a limited bandwidth (150kB/s) with the help of pipe viewer pv :

    cat vid.mp4 | pv -L 150k > pipe_in

    3. Play the video with ffplay :

    ffplay cache:./pipe_in

    My expectation : To watch the video come through immediately but slowly given the bandwidth constraint.

    What really happens : The video begins to show at normal speed only when command 2. finishes running.

    Thank you in advance !

  • FFMPEG pull only english audio unless no english then copy all audio

    21 mars 2021, par Lee

    This is doing my nut in !! lol

    


    I am trying to pull only english audio unless there is no english in which case i just want to leave it as it is - I am converting to ac audio as well and copying subs. Put yeah i just want to say pull only english unless there is no english in which case copy all audio.

    


    So I am using this -copy_unknown -map v -map m:language:eng ? -c:v copy -c:s srt -ac 2

    


    So it works and pulls english if there is one, but if there isn't it looses all audio.

    


    Help lol

    


    The copy unknown doens't work either - unknown language audio gets left out too

    


    Thanks
Chezzy

    


  • lavc/qsvenc : Fix bitrate_limit to allow AVC encode in limited bitrate

    15 octobre 2019, par Linjie Fu
    lavc/qsvenc : Fix bitrate_limit to allow AVC encode in limited bitrate
    

    MFXVideoENCODE_Query calls CheckVideoParamQueryLike in MSDK and
    will determine whether to set param.mfx.TargetKbps to the allowed
    minTargetKbps according to the bitrate_limit in extco2 buffer.

    Thus q->param.ExtParam must be set before MFXVideoENCODE_Query in case
    minTargetKbps is written to TargetKbps by default.

    1080P AVC encoding with option "-bitrate_limit 0 -b:v 100k" :
    Before patch :
    902 kbps
    After patch :
    156 kbps
    Signed-off-by : Linjie Fu <linjie.fu@intel.com>

    • [DH] libavcodec/qsvenc.c