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Autres articles (93)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • 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 (...)

Sur d’autres sites (8201)

  • FFMPEG conversion to MXF [closed]

    16 février 2012, par MFB

    I have to wrap an MPEG2 video file in an MXF container and convert the audio in the process. I have the MXF wrapping working but it won't convert the audio stream (which needs to be 16bit, 48kHz Linear PCM).

    Here's what I'm trying :

    ffmpeg -i input.mpg -map 0:0 -map 0:1 -vcodec copy -f mpeg2video -acodec pcm_s16le -ar 48000 -ac 2 output.mxf

    Results :

    ffmpeg version 0.10 Copyright (c) 2000-2012 the FFmpeg developers
    
  built on Jan 30 2012 17:49:23 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3)
    
  configuration: *{snipped}*
    
runtime-cpudetect
    
  libavutil      51. 34.101 / 51. 34.101
    
  libavcodec     53. 60.100 / 53. 60.100
    
  libavformat    53. 31.100 / 53. 31.100
    
  libavdevice    53.  4.100 / 53.  4.100
    
  libavfilter     2. 60.100 /  2. 60.100
    
  libswscale      2.  1.100 /  2.  1.100
    
  libswresample   0.  6.100 /  0.  6.100
    
  libpostproc    52.  0.100 / 52.  0.100
    
[mpeg @ 0x10201ae00] max_analyze_duration 5000000 reached at 5000000
    
Input #0, mpeg, from '/Volumes/Extra/test.mpg':
    
  Duration: 00:00:59.97, start: 0.192911, bitrate: 6513 kb/s
    
    Stream #0:0[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
    
    Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 16:15 DAR 4:3], 12000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
Output #0, mpeg2video, to 'video.mxf':
    
  Metadata:
    
    encoder         : Lavf53.31.100
    
    Stream #0:0: Video: mpeg2video, yuv420p, 720x576 [SAR 16:15 DAR 4:3], q=2-31, 12000 kb/s, 25 fps, 90k tbn, 25 tbc
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (copy)
    
Press [q] to stop, [?] for help
    
frame= 1500 fps=  0 q=-1.0 Lsize=   43949kB time=00:00:59.96 bitrate=6004.6kbits/s    
    
video:43949kB audio:0kB global headers:0kB muxing overhead 0.000000%

    The video plays fine as the MXF, but there is no audio stream at all. Any help would be great.

  • Running ffmpeg from a windows service on same machine encounters permissions issue

    8 mars 2012, par gaijintendo

    I had been running a Windows Service, form my machine (which has full read/write access to a network drive).

    The command for ffmpeg was something like this :
    - i \filestore\test.avi -b 500000 -s 640x360 -ar 22050 -copyts -y -vcodec libx264 -acodec ac3 -y \filestore\mp4\test.mp4

    Running it from cmd works perfectly. Running it from a windows service, from the same machine, would yield a File Not found type error. Updating to the latest ffmpeg stable changed that to "Permission denied".

    I am running the service it as 'Local Account'. I was intending to run this on another server, so I need to get a grip on this !

    Does running a service on your machine run as a different user to you when you choose 'Local Account' ?

  • How to decode mp4a-latm content in RTP using ffmpeg ?

    13 avril 2012, par Nitin Goyal

    I am trying to decode the mp4a-latm content using ffmpeg. I have used the CodecID as Codec_ID_AAC_LATM and extracted the config parameter from the SDP and further extracted the audio content from the RTP by removing the rtp header and sent it to decodeAudio4 function but the decode function always return the negative value.

    I have gone through the RFC 3016 and the code of rtpdec_latm.c in ffmpeg src also but i am not able to find where i am doing the mistake and what exactly the procedure to send the content to decode.

    As general, we need to send the config value frm SDP and then the raw audio packet form the RTP after removing the header but its not working.

    Can someone help me in it ?

    Regards
    Nitin

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