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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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  • FFMPEG Split RGBA image sequence to rgb.mp4 and alpha.mp4

    24 juillet 2020, par manjunath karanth

    I want to split input to two outputs : rgb.mp4 and alpha.mp4 in one command. Attempted command :

    


    ffmpeg -f image2 -framerate 25 -start_number 0 -i "D:\wfh\seq\Rays_%%5d.png" -c:v libx264 -pix_fmt yuv420p -profile:v main -level 5.1  "rgb.mp4" "alpha.mp4"


    


    Using alpha extract will only produce gray scale output (if am not wrong), but I want both RGB and grayscale output in one go.

    


  • How to use ffmpeg to split an audio file into HLS-compatible chunks ? (mp3 format)

    25 janvier 2019, par ffxsam

    I’ve been looking all over the web & StackOverflow, and can’t get this to work. I have an audio file that I’d like to split into mp3 files and generate a corresponding m3u8 file.

    I’ve tried this, which was the closest :

    ffmpeg -i sometrack.wav -c:a libmp3lame -b:a 256k -map 0:0 -f segment -segment_time 10 -segment_list outputlist.m3u8 -segment_format mpegts 'output%03d.mp3'

    But all the mp3 files are garbled when I play them.

  • FFMPEG split video with equal frames in the splits....?

    17 janvier 2017, par Gurinderbeer Singh

    I am using FFMPEG to split a video file by using the following command :

    ffmpeg -i input.mp4 -c copy -segment_times 600,600 -f segment out%d.mp4

    This command divides video based on time.. But even if output splits are of same duration, number of frames are different in the splits..

    Is there a way of splitting a video file without recoding so that number of frames are equal in splitted files.?

    Even if it use some other tool than FFMPEG.

    For example : input.mp4 of duration 200 seconds has 5000 frames.

    Can we split this into :

    input1.mp4 having 2500 frames
    and input2.mp4 having 2500 frames.

    It doesn’t matter if duration of output splits is different..

    Please help.....!

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