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Autres articles (108)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 est la première version de MediaSPIP stable.
    Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • 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" (...)

Sur d’autres sites (16369)

  • Muxing of two audio files using ffmpeg (in C) [on hold]

    8 décembre 2015, par Abhishek Gupta

    I need to mux two audio files to create a final audio file using ffmpeg. There are a lot of easy solutions available for commandline approach of doing so (e.g. How to overlay two audio files using ffmpeg).

    I need something written natively in C or C++ language.

  • ffmpeg can't concat movies from two different devices

    29 mars 2017, par T4ng10r

    I’ve got bunch of movies from two different Panasonic devices. As long as I concat movies from only ONE device - final movie is smooth.
    However, when I add movie clip from second device, right after final movie ends playing movies from first device it display audio and only still images from movie clip from other device.

    ffmpeg -f concat -i mylist.txt -c copy final_movie.MP4

    Example ffprobe :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'S6810001.MP4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.27.100
    
  Duration: 00:00:10.62, start: 0.021333, bitrate: 1131 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 998 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 132 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandle

    Second device movie clip :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a/T00004.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.27.100
    
  Duration: 00:00:33.18, start: 0.000000, bitrate: 1190 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 929 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, fltp, 256 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
    Side data:
    
      audio service type: main

    Why movie is still ? How to prepare it so it could be joined correctly ?

  • How to re-encode to rgb pixel_format properly in ffmpeg

    1er février 2020, par captain_majid

    I’m using this command to record from multiple inputs :

    ffmpeg -y
    
-f dshow -rtbufsize 1024M -thread_queue_size 1024 -probesize 64M -i video="screen-capture-recorder" -framerate 30
    
-f dshow -rtbufsize 16M -i audio="virtual-audio-capturer"
    
-f dshow -rtbufsize 16M -i audio="Microphone (DroidCam Virtual Audio)"
    
-f dshow -rtbufsize 512M -thread_queue_size 512 -probesize 50M -i video="DroidCam Source 3"
    
-stream_loop -1 -i ".\media\background sounds\blue.mp4"
    
-i ".\media\pictures\Webcam Overlay\blue_.png"
    
-i ".\media\pictures\Webcam Overlay\red.png"
    
-f gdigrab -rtbufsize 512M -thread_queue_size 512 -probesize 64M -itsoffset 0.80 -i title="NohBoard v1.2.2" -framerate 60 -draw_mouse 0
    

    
-filter_complex "
    
[0:v] scale=1366x768 [desktop];
    
[3:v] hue=s=-5, scale=240x160 [webcam];
    
[desktop][webcam] overlay=x=W-w-285:y=H-h-7:format=rgb [deskCam];
    
[4:v] format=rgba,colorchannelmixer=aa=0.5, scale=240x160 [vid];
    
[deskCam][vid] overlay=x=W-w-5:y=H-h-245:format=rgb [deskCamVid];
    
[deskCamVid][5:v] overlay=x=W-w-280:y=H-h-0:format=rgb [deskCamVidBlue];
    
[deskCamVidBlue][6:v] overlay=x=W-w-0:y=H-h-238:format=rgb [deskCamVidBlueRed];
    
[7:v] chromakey=0x00FF00:similarity=.200, scale=420x140 [kb];
    
[deskCamVidBlueRed][kb] overlay=x=W-w-945:y=H-h-285:format=rgb [final];
    
[1][2] amix [aud1]; [1][2][4] amix=inputs=3 [aud2]"
    
-map "[final]" -map "[aud1]" -map "[aud2]" -metadata:s:a:0 title="No Music" -metadata:s:a:1 title="All sounds" out.mkv

    The problem is the colors are not as bright as I want unless adding :format=rgb to all overlays like seen above, but this delays my encoding a lot, also when I press ’Q’, only a small part of the video (like 1m of 3m) is produced.

    Also If you see any unnecessary switches or non-optimal ones, please advise.

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