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  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • 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 (3163)

  • ffmpeg video encode add artefacts on very dark scenes (near to black)

    10 juin 2021, par Marco999

    I have many videos ripped from blu ray (h.264).

    


    I don't have sufficient space to store all videos and I like to re-encode all video with hevc codec (h.265) and keep similar quality (not exactly the some) but with a good compromise.

    


    I have tried this command :

    


    ffmpeg.exe -hide_banner -hwaccel nvdec -hwaccel_device 0 -vsync 0 -i "title00.mkv" -c:s copy -an  -c copy -c:v:0 hevc_nvenc -profile:v main10 -pix_fmt p010le  -rc-lookahead 32 -spatial-aq 1 -aq-strength 12  -cq 30 -qmin 1 -qmax 30 -b:v:0 10M -maxrate:v:0 20M -gpu 0  title00_nvidia_no_audio.mkv


    


    the quality is excellent and is very close to original, but on the very dark scenes (near to black) there are visible artefacts.

    


    To solve the problem I have tried this changes without get any improvement :

    


    -cq 25 -qmin 1 -qmax 25 

-spatial-aq 1 -aq-strength 4


    


    For some strange reason seem that if I decrease the -cq from 30 to 25 the artefacts are more visible.

    


    I general I'am satasfied about the quality result but before start the encoding I like to understand if there is a way to reduce/remove these artefacts on very dark scenes.

    


    Any tips ?

    


    Thanks !

    


  • Add image.png to top of image.jpg with ffmpeg became more dark

    20 avril 2022, par Rofie Sagara

    I try to create frame for picture use FFMPEG so its logic same as watermark. so i used this code

    


    ffmpeg -i output_1920x1280.jpg -vf "movie=cpf-border.png [watermark]; [in][watermark] overlay=0:0 [out]" -q:v 1 withBorder.jpg


    


    and try with diff command like this

    


    ffmpeg -i output_1920x1280.jpg -i cpf-border.png -pix_fmt rgba -filter_complex "overlay=0:0" withBorder.jpg


    


    but still same. there no error but the result of image its more dark. cause the frame base on white color so i saw that when do side by side can you help me maybe there another syntax to handle this or use another tools

    


    This the border in .png format
This the base image
This the result its more dark than the original

    


  • FFmpeg recorded video is dark with Xvfb and chrome headless on Centos 7

    15 juin 2023, par narsy4

    I am trying to do a video recording of headless chrome session on Centos 7 (Amazon EC2 instance) using ffmpeg. I have installed ffmpeg, Xvfb and google chrome on the machine. I started Xvfb on :99, verified the display using xdpyinfo and started chrome. However when I run the ffmpeg cmd to capture the video (no errors in ffmpeg debug logs), the output is dark with a X sign in the centre of video screen. What am I doing wrong here ? Any help is appreciated.

    


    **Xvfb and chrome commands**
Xvfb :99 -screen 0 1920x1080x24 &
export DISPLAY=:99
google-chrome --headless --disable-gpu --no-sandbox --start-maximized --window-size=1920x1080 https://www.google.com



    


    **FFmpeg command**
ffmpeg -video_size 1920x1080 -framerate 30 -f x11grab -i :99 -loglevel debug -pix_fmt yuv420p /tmp/video.mp4



    


    dark video

    


    Searched for and read a few threads on this, but couldn't get it to work.

    


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