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Médias (91)

Autres articles (86)

  • 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) (...)

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 is the first MediaSPIP stable release.
    Its official release date is June 21, 2013 and is announced here.
    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 (...)

  • 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 (7114)

  • Use FFMPEG to stream images from one client to another through IIS (or other) server

    20 avril 2012, par eselk

    I'm new to FFMPEG and maybe I should post this in their forums, but you guys here seem to know everything, so here goes. I have a client app that takes screen shots and saves them as images (256 color bitmaps currently, can change if needed), it does this at a rate of about 4 fps. I currently use my own socket code written in C# to push these to my socket server (also C#) running on a Windows 2008 server. That server then sends these images out to several clients that display them as they are received and also buffers them to allow for rewind, pause, etc, like a DVR. My current format requires approx 100KB per frame, and thus only works for a very small number of clients.

    I started looking at FFMPEG and the compression with MPEG1 and especially MPEG4 is amazing, and so is the quality. What I'm looking for is a basic guide, tutorial, or steps, to produce something similar to my current design, but using FFMPEG and actual video streaming. Ideally the player side could be something like Flash or anything that is easy to embed in a .NET WinForm (or a browser control I can host in the WinForm), and it would need to support buffering still so they can pause and rewind (about 5 or 10 mins, which seems like a lot, but remember this is only 4 fps and 256 color, about 1 or 2 MB per min in my testing).

    I see that FFMPEG, the command-line utility, and I assume the API, even has options for posting to a server via UDP or TCP, so maybe I'll use that instead of my own socket code. Ideally my app would feed images to FFMPEG library at a rate of 4fps as they come from the screen-shot unit, and it would send these up to my IIS server (or another server ?) which would then server them to client(s) that could use them similar to a YouTube video.

  • C++/CLI — 0xc000007b (INVALID_IMAGE_FORMAT) with /clr option on

    9 mars 2015, par OverMachoGrande

    I’m trying to build a C++/CLI executable to which I statically link ffmpeg (libavcodec, libavformat, libavutil & swscale). It works fine if I build it normally (without /clr, so no CLR support), it works. However, when I add CLR support, it won’t start up with a 0xc000007b. A "Hello World" C++/CLI app runs fine, though.

    Supposedly the same thing happens with Boost::Threads, but since ffmpeg is pure C, I doubt it’s using Boost.

    My config :

    • Visual Studio 2008 Professional SP1
    • Windows XP Pro SP3 (x86)
    • .NET Framework 3.5 SP1

    Thanks,
    Robert

  • getting errors from FFMpeg when spawned from .NET

    18 mars 2014, par Brannon

    When I run FFMpeg from the command line like this

    ffmpeg.exe -hwaccel auto -re -i "C:\Users\Public\Videos\Sample Videos\Wildlife.wmv" -an -sn -c:v bmp -pix_fmt bgr24 -f rawvideo - > junk.bin

    it works fine. However, when I spawn the exact same thing (minus > junk.bin) I get this nasty "bad header" error after a few seconds of playback. What is causing this ? I have trouble believing my process blocks the pipe longer than the filesystem does, but it should be able to block the pipe indefinitely without defeating the decoding. The truncated stderr is below. My code to spawn the thing is here.

    ffmpeg version N-60761-g916a792 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Feb 19 2014 21:57:22 with gcc 4.8.2 (GCC)
    
  configuration: --target-os=mingw32 --enable-shared --enable-runtime-cpudetect
    
  libavutil      52. 65.100 / 52. 65.100
    
  libavcodec     55. 52.102 / 55. 52.102
    
  libavformat    55. 33.100 / 55. 33.100
    
  libavdevice    55. 10.100 / 55. 10.100
    
  libavfilter     4.  1.103 /  4.  1.103
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 17.104 /  0. 17.104
    
cygwin warning:
    
  MS-DOS style path detected: C:\Users\Public\Videos\Sample Videos\Wildlife.wmv
    
  Preferred POSIX equivalent is: /cygdrive/c/Users/Public/Videos/Sample Videos/Wildlife.wmv
    
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
    
  Consult the user's guide for more details about POSIX paths:
    
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
    
[asf @ 0x600059480] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Guessed Channel Layout for  Input Stream #0.0 : stereo
    
Input #0, asf, from 'C:\Users\Public\Videos\Sample Videos\Wildlife.wmv':
    
  Metadata:
    
    SfOriginalFPS   : 299700
    
    WMFSDKVersion   : 11.0.6001.7000
    
    WMFSDKNeeded    : 0.0.0.0000
    
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
    
    title           : Wildlife in HD
    
    copyright       : © 2008 Microsoft Corporation
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: AP@L3
    
  Duration: 00:00:30.09, start: 0.000000, bitrate: 6977 kb/s
    
    Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, fltp, 192 kb/s
    
    Stream #0:1(eng): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc
    
Output #0, rawvideo, to 'pipe:':
    
  Metadata:
    
    SfOriginalFPS   : 299700
    
    WMFSDKVersion   : 11.0.6001.7000
    
    WMFSDKNeeded    : 0.0.0.0000
    
    comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
    
    title           : Wildlife in HD
    
    copyright       : © 2008 Microsoft Corporation
    
    IsVBR           : 0
    
    DeviceConformanceTemplate: AP@L3
    
    encoder         : Lavf55.33.100
    
    Stream #0:0(eng): Video: bmp, bgr24, 1280x720, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (vc1 -> bmp)
    
Press [q] to stop, [?] for help
    
frame=    3 fps=0.0 q=0.0 size=    8100kB time=00:00:00.10 bitrate=662902.1kbits/s    
    
frame=   29 fps= 26 q=0.0 size=   78302kB time=00:00:00.96 bitrate=662902.3kbits/s    
    
frame=   50 fps= 30 q=0.0 size=  135003kB time=00:00:01.66 bitrate=662902.2kbits/s    
    
frame=   65 fps= 30 q=0.0 size=  175503kB time=00:00:02.16 bitrate=662902.2kbits/s    
    
frame=   80 fps= 30 q=0.0 size=  216004kB time=00:00:02.66 bitrate=662902.1kbits/s    
    
frame=   95 fps= 30 q=0.0 size=  256505kB time=00:00:03.16 bitrate=662902.1kbits/s    
    
[asf @ 0x600059480] ff asf bad header 74  at:5053733
    
[asf @ 0x600059480] invalid packet_length -1908511255 at:5053740
    
[asf @ 0x600059480] ff asf bad header d4  at:5053759
    
[asf @ 0x600059480] ff asf skip 55629 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5181733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5189733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5197733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5205733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5213733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5221733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5229733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5237733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5245733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5357733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5365733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5373733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5381733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5493733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5501733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5509733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5517733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5629733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5637733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5645733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5653733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5701733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5709733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5717733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5725733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5805733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5813733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5821733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5829733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5877733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5885733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5893733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5901733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5949733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5957733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5965733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] ff asf bad header 0  at:5973733
    
[asf @ 0x600059480] ff asf skip 7991 (unknown stream)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 15 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 2
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 7 times
    
[asf @ 0x600059480] ff asf skip 2562 (unknown stream)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 3 times
    
[asf @ 0x600059480] ff asf skip 448 (unknown stream)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 9 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 6
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 7 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 13 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 24 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 6
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 6 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 5
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 6 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-9)
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 2 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 5
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 8 times
    
[asf @ 0x600059480] unexpected packet_replic_size of 5
    
[asf @ 0x600059480] packet_obj_size invalid
    
    Last message repeated 39 times
    
[asf @ 0x600059480] packet_frag_size is invalid (1749-40)

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