Recherche avancée

Médias (1)

Mot : - Tags -/Rennes

Autres articles (66)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, 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 (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

Sur d’autres sites (10080)

  • ffmpeg, /dev/video0, -f decklink

    20 mars 2019, par Camille Goudeseune

    I’m trying to capture video from a PCI card, the Blackmagic DeckLink Mini Recorder, via ffmpeg, on a headless host running Ubuntu 18.04.2 LTS, hopefully with a command like

    ffmpeg -f decklink -i /dev/video0 ...

    How can I make that work ? I have two obstacles.

    No /dev/video0

    ffmpeg -i /dev/video0 ... fails : /dev/video0: No such device or address.
    v4l2-ctl --list-devices fails with the same error message.

    I built /dev/video0, and it looks okay :

    mknod /dev/video0 c 81 0
    
chown root.video /dev/video0
    
chmod g+rw /dev/video0

    To compare this file with a working one, I ran strace cat /dev/video0 on this host, and on another host (Ubuntu 14) with a working /dev/video0. The outputs began to differ here (good, then bad) :

    fstat(1, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
    
open("/dev/video0", O_RDONLY)           = 3  
    
fstat(3, {st_mode=S_IFCHR|0660, st_rdev=makedev(81, 0), ...}) = 0
    
fadvise64(3, 0, 0, POSIX_FADV_SEQUENTIAL) = 0
    
----
    

    
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
    
openat(AT_FDCWD, "/dev/video0", O_RDONLY) = -1 ENXIO (No such device or address)

    So /dev/video0 is broken at a level lower than ffmpeg or v4l2 or even cat.

    On Ubuntu 14, man 8 MAKEDEV suggests that the error message means that "the kernel does not have the driver configured or loaded."

    This Ubuntu 18 host lacks that manpage, but it does have a few /snap/core/*/sbin/MAKEDEV, all the same, so I tried

    /snap/core/6350/sbin/MAKEDEV -n -v video

    It would have created over a hundred devices videoXX, radioXX, vtxXX, vbiXX. Those devices didn’t exist yet, so it seemed harmless to try it.

    rm /dev/video0; /snap/core/6350/sbin/MAKEDEV video

    That rebuilt /dev/video0, but "No such device" remains, from cat or ffmpeg.

    No decklink

    ffmpeg -f decklink ... fails with Unknown input format: 'decklink'.

    Neither black nor deck nor link is mentioned by ffmpeg -devices (fbdev, lavfi, oss, v4l2) and ffmpeg -formats (about 350), either for Ubuntu’s own version 3.4.4-0ubuntu0.18.04.1, or for version N-93330-g7ff89574c7 compiled from source on 2019 Mar 13 :

    git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg
    
cd ffmpeg
    
./configure --enable-nonfree --disable-doc --disable-w32threads --enable-pthreads

    (Although ./configure --help mentions --enable-decklink, using that yielded "ERROR : DeckLinkAPI.h not found." updatedb && locate DeckLinkAPI.h finds no file with that name, either.)

    The DeckLink PCI card is recognized by hwinfo and lspci.

    lsmod reports the loaded modules blackmagic and blackmagic_io.

    Maybe the PCI card is installed ok, but ffmpeg just can’t reach it because I can’t configure it for that.

    Edit : Rebooting didn’t fix anything.

  • FFMPEG video merging. Only first video shows

    13 mars 2019, par James Ashworth

    I’m trying to put 7 second intro video before another one, but I keep having trouble with it. I don’t need to do anything else then add intros to videos.

    This is what I’m currently getting.

    (for %i in (*.mp4) do @echo file '%i') > mylist.txt
    

    
ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4
    

    

    

    

    

    
    C:\Users\Business>cd desktop
    

    
C:\Users\Business\Desktop>cd testfile
    

    
C:\Users\Business\Desktop\Testfile>(for %i in (*.mp4) do @echo file '%i') > mylist.txt
    

    
C:\Users\Business\Desktop\Testfile>
    
C:\Users\Business\Desktop\Testfile>(for %i in (*.mp4) do @echo file '%i') > mylist.txt
    

    
C:\Users\Business\Desktop\Testfile>ffmpeg -f concat -i mylist.txt -c copy output.mp4
    
ffmpeg version N-93308-g1144d5c96d Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 8.2.1 (GCC) 20190212
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt  
    

    
libavutil      56. 26.100 / 56. 26.100
    
  libavcodec     58. 47.103 / 58. 47.103
    
  libavformat    58. 26.101 / 58. 26.101
    
  libavdevice    58.  6.101 / 58.  6.101
    
  libavfilter     7. 48.100 /  7. 48.100
    
  libswscale      5.  4.100 /  5.  4.100
    
  libswresample   3.  4.100 /  3.  4.100
    
  libpostproc    55.  4.100 / 55.  4.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000261c7072c00] Auto-inserting h264_mp4toannexb bitstream filter
    
Input #0, concat, from 'mylist.txt':
    
  Duration: N/A, start: -0.042667, bitrate: 2453 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 2325 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    encoder         : Lavf58.26.101
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, q=2-31, 2325 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=110209 fps=3246 q=-1.0 Lsize= 1103461kB time=01:01:17.41 bitrate=2458.1kbits/s speed= 108x
    
video:1042171kB audio:57353kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.358030%
    

    
C:\Users\Business\Desktop\Testfile>

    It shows the 7 second video as the whole video. Someway i got it to change after 7 seconds, but then the rest of the video was really buddy.

  • Music discord js bot issue

    12 mars 2019, par Eric Sim

    Does anyone know how I would go about resolving this error ?

    My Discord.JS music bot would just simply crashes when trying to play some old songs. The Discord.JS bot is currently being hosted on herokuapp.

    19-03-12T15:08:08.576483+00:00 app[worker.1]: /app/node_modules/ytdl-core-discord/node_modules/prism-media/src/core/FFmpeg.js:41
    
2019-03-12T15:08:08.576496+00:00 app[worker.1]:     this._readableState = this._reader._readableState;
    
2019-03-12T15:08:08.576499+00:00 app[worker.1]:                                        ^
    
2019-03-12T15:08:08.576501+00:00 app[worker.1]: 
    
2019-03-12T15:08:08.576502+00:00 app[worker.1]: TypeError: Cannot read property '_readableState' of undefined
    
2019-03-12T15:08:08.576504+00:00 app[worker.1]:     at new FFmpeg (/app/node_modules/ytdl-core-discord/node_modules/prism-media/src/core/FFmpeg.js:41:40)
    
2019-03-12T15:08:08.576506+00:00 app[worker.1]:     at ytdl.getInfo (/app/node_modules/ytdl-core-discord/index.js:23:24)
    
2019-03-12T15:08:08.576508+00:00 app[worker.1]:     at fn (/app/node_modules/ytdl-core/lib/info.js:365:9)
    
2019-03-12T15:08:08.576510+00:00 app[worker.1]:     at util.parallel (/app/node_modules/ytdl-core/lib/info.js:232:11)
    
2019-03-12T15:08:08.576511+00:00 app[worker.1]:     at checkDone (/app/node_modules/ytdl-core/lib/util.js:405:7)
    
2019-03-12T15:08:08.576513+00:00 app[worker.1]:     at SAXParser.parser.onend (/app/node_modules/ytdl-core/lib/info.js:288:26)
    
2019-03-12T15:08:08.576515+00:00 app[worker.1]:     at emit (/app/node_modules/sax/lib/sax.js:624:35)
    
2019-03-12T15:08:08.576517+00:00 app[worker.1]:     at end (/app/node_modules/sax/lib/sax.js:667:5)
    
2019-03-12T15:08:08.576519+00:00 app[worker.1]:     at SAXParser.write (/app/node_modules/sax/lib/sax.js:975:14)
    
2019-03-12T15:08:08.576520+00:00 app[worker.1]:     at SAXParser.close (/app/node_modules/sax/lib/sax.js:157:38)

Navigation