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Autres articles (30)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

Sur d’autres sites (7647)

  • How to use FFmpeg to generate a pure black stream and push to RTMP by code in C++

    23 avril 2022, par Guohy

    I'm new in FFmpeg. I want to generate a pure black stream using FFmpeg, and I don't want to use the FFmpeg command. I know below command can work.

    


    ffmpeg -f lavfi -i color=size=1920x1080:rate=25:color=black -f flv rtmp://172.16.63.123:9911/live/33bld


    


    So, someone knows how to generate a pure black stream and push to RTMP by code in C++ ? Thanks a lot.

    


  • Concatenate videos and add black frames between them with ffmpeg

    4 octobre 2024, par user3406207

    I have three videos that I am concatenating with ffmpeg. I would like to add a few black frames in between them. Although I've found a few hints on the web it has not worked for me yet. I have tried to generate an 'empty' video with just black frames with :

    



    ffmpeg -t 20 -s 1920x1080 -f rawvideo -pix_fmt rgb24 -r 25 -i c:\nul  E:\empty.avi


    



    and then concatenate with another one but doesn't work. I have tried a few other things without success. Any help would be greatly appreciated

    



    EDIT : also tried to add black frames before and after video with the following code, but no success :

    



    ffmpeg -f lavfi -i color=c=black:s=1920x1080:r=25:d=100 -i middle_video.avi -filter_complex 
"[0:v]trim=start_frame=1:end_frame=21[blackstart];
[0:v] trim=start_frame=1:end_frame=21 [blackend]; 
[blackstart] [1:v] [blackend] concat=n=3:v=1:a=0[out]" -map "[out]" -c:v qtrle -c:a -copy output.avi


    



    EDIT2 :
Output from ffprobe

    



    Metadata:
encoder: Lavf57.3.100
Duration: 00:00:10.05, start: 0.000000, bitrate: 43302 kb/s
Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 192
0x1080 [SAR 1:1 DAR 16:9], 43333 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 10k tbc
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 128 k
b/s


    



    EDIT 3
Link to the report of the ffmpeg console output :
FFMPEG session report

    


  • Concatenate videos and add black frames between them with ffmpeg

    25 avril 2016, par user3406207

    I have three videos that I am concatenating with ffmpeg. I would like to add a few black frames in between them. Although I’ve found a few hints on the web it has not worked for me yet. I have tried to generate an ’empty’ video with just black frames with :

    ffmpeg -t 20 -s 1920x1080 -f rawvideo -pix_fmt rgb24 -r 25 -i c:\nul  E:\empty.avi

    and then concatenate with another one but doesn’t work. I have tried a few other things without success. Any help would be greatly appreciated

    EDIT : also tried to add black frames before and after video with the following code, but no success :

    ffmpeg -f lavfi -i color=c=black:s=1920x1080:r=25:d=100 -i middle_video.avi -filter_complex 
    
"[0:v]trim=start_frame=1:end_frame=21[blackstart];
    
[0:v] trim=start_frame=1:end_frame=21 [blackend]; 
    
[blackstart] [1:v] [blackend] concat=n=3:v=1:a=0[out]" -map "[out]" -c:v qtrle -c:a -copy output.avi

    EDIT2 :
    Output from ffprobe

    Metadata:
    
encoder: Lavf57.3.100
    
Duration: 00:00:10.05, start: 0.000000, bitrate: 43302 kb/s
    
Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 192
    
0x1080 [SAR 1:1 DAR 16:9], 43333 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 10k tbc
    
Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 128 k
    
b/s

    EDIT 3
    Link to the report of the ffmpeg console output :
    FFMPEG session report

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