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  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • D’autres logiciels intéressants

    12 avril 2011, par

    On ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
    La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
    On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
    Videopress
    Site Internet : (...)

  • Les statuts des instances de mutualisation

    13 mars 2010, par

    Pour des raisons de compatibilité générale du plugin de gestion de mutualisations avec les fonctions originales de SPIP, les statuts des instances sont les mêmes que pour tout autre objets (articles...), seuls leurs noms dans l’interface change quelque peu.
    Les différents statuts possibles sont : prepa (demandé) qui correspond à une instance demandée par un utilisateur. Si le site a déjà été créé par le passé, il est passé en mode désactivé. publie (validé) qui correspond à une instance validée par un (...)

Sur d’autres sites (4484)

  • Using ffmpeg to pipe Logitech C920 video to two outputs : re-encoded to RTMP stream and hardware-encoded to file

    18 décembre 2018, par Maros Hluska

    I’m trying to use ffmpeg to accept video from a Logitech C920 and broadcast it to an RTMP stream (e.g. Twitch). But there’s a twist : I would like to also save to file the original 1080p hardware-encoded video.

    So I would like to do both of these :

    1. Re-encode the input to 852x480 resolution and upload to an RTMP url with 1500 bitrate
    2. Save the original input to a file without re-encoding (C920 does hardware encoding with the h.264 codec)

    I’ve tried saving the video to file without re-encoding using the following :

    ffmpeg -s 1920x1080 -framerate 30 -pixel_format uyvy422 -vcodec h264 -f avfoundation -i 'HD Pro' -copyinkf -vcodec copy out.mp4

    This seems to almost work. The webcam light turns on and a few seconds of running this produces a massive file (1GB or so). However, I can’t seem to open the file with VLC. I do see a warning from ffmpeg :

    [AVBSFContext @ 0x7fbd4fc3e9c0] No start code is found.
    
HD Pro: could not find codec parameters

    I’m on a Mac using ffmpeg 4.1.

    Edit :

    It seems the file that ffmpeg produces is not h264 encoded but rather raw pixel data. I’m starting to think that it’s not possible to set the webcam into the h264 mode with Mac (most other cases do it in Linux with v4l2).

    To anyone answering the question, I’d be happy with a solution that involves Linux as well. Especially if I can use a bootable live USB.

  • FFmpeg recording 24 hours, 7 days

    29 septembre 2017, par lys

    I need to record a webcam video 24/7 using FFmpeg and I have no idea how to do it. I know it allows me to set the recording time to 24 hours, but does anyone know how to make this recording be continuous ?

  • TCL command prompt crashed with the error "ffmpeg.exe stopped working" with tcl version 8.0 and window 7

    9 février 2019, par M. D. P

    TCL command prompt crashed with the error "ffmpeg.exe has stopped working" with tcl version 8.0 and window 7 32 bit. my code file is "live.tcl" which is as follow :

    proc live {} {
    

    
exec ffmpeg -f dshow -s 1280x720 -i "video=Logitech HD Webcam C525" -f sdl2 - >& c:/test/temp.txt &
    

    
}
    
live

    On the other hand same my code for video capturing i.e "videocapture.tcl" works on the same tclsh command prompt on windows 7. my tcl code for "videocapture.tcl" is :

    proc videocapture {} { 
    

    
 exec ffmpeg -f dshow -t 00:00:10 -i "video=Integrated Webcam" c:/test/sample-a.avi >& temp.txt & 
    
 
    
}
    
videocapture

    error report is as follow :

    ffmpeg started on 2017-11-22 at 10:56:04
    
Report written to "ffmpeg-20171122-105604.log"
    
Command line:
    
ffmpeg -f dshow -s 1280x720 -i "video=HD Webcam C525" -report -f sdl2 -
    
ffmpeg version N-89127-g8f4702a93f Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 7.2.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --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-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
    
  libavutil      56.  0.100 / 56.  0.100
    
  libavcodec     58.  3.103 / 58.  3.103
    
  libavformat    58.  2.100 / 58.  2.100
    
  libavdevice    58.  0.100 / 58.  0.100
    
  libavfilter     7.  2.100 /  7.  2.100
    
  libswscale      5.  0.101 /  5.  0.101
    
  libswresample   3.  0.101 /  3.  0.101
    
  libpostproc    55.  0.100 / 55.  0.100
    
Splitting the commandline.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'dshow'.
    
Reading option '-s' ... matched as option 's' (set frame size (WxH or abbreviation)) with argument '1280x720'.
    
Reading option '-i' ... matched as input url with argument 'video=HD Webcam C525'.
    
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'sdl2'.
    
Reading option '-' ... matched as output url.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option report (generate a report) with argument 1.
    
Successfully parsed a group of options.
    
Parsing a group of options: input url video=HD Webcam C525.
    
Applying option f (force format) with argument dshow.
    
Applying option s (set frame size (WxH or abbreviation)) with argument 1280x720.
    
Successfully parsed a group of options.
    
Opening an input file: video=HD Webcam C525.
    
[dshow @ 03dfca20] Selecting pin Capture on video
    
dshow passing through packet of type video size  1843200 timestamp 664898760000 orig timestamp 664898643970 graph timestamp 664898760000 diff 116030 HD Webcam C525
    
[dshow @ 03dfca20] All info found
    
Input #0, dshow, from 'video=HD Webcam C525':
    
  Duration: N/A, start: 66489.876000, bitrate: N/A
    
Stream #0:0, 1, 1/10000000: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1280x720, 10 fps, 10 tbr, 10000k tbn, 10000k tbc
    
Successfully opened the file.
    
Parsing a group of options: output url -.
    
Applying option f (force format) with argument sdl2.
    
Successfully parsed a group of options.
    
Opening an output file: -.
    
Successfully opened the file.
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
    
Press [q] to stop, [?] for help
    
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
    
[rawvideo @ 03e01660] PACKET SIZE: 1843200, STRIDE: 2560
    
detected 1 logical cores
    
[graph 0 input from stream 0:0 @ 03e06ae0] Setting 'video_size' to value '1280x720'
    
[graph 0 input from stream 0:0 @ 03e06ae0] Setting 'pix_fmt' to value '1'
    
[graph 0 input from stream 0:0 @ 03e06ae0] Setting 'time_base' to value '1/10000000'
    
[graph 0 input from stream 0:0 @ 03e06ae0] Setting 'pixel_aspect' to value '0/1'
    
[graph 0 input from stream 0:0 @ 03e06ae0] Setting 'sws_param' to value 'flags=2'
    
[graph 0 input from stream 0:0 @ 03e06ae0] Setting 'frame_rate' to value '10000000/1000000'
    
[graph 0 input from stream 0:0 @ 03e06ae0] w:1280 h:720 pixfmt:yuyv422 tb:1/10000000 fr:10000000/1000000 sar:0/1 sws_param:flags=2
    
[AVFilterGraph @ 03de2780] query_formats: 3 queried, 2 merged, 0 already done, 0 delayed
    
dshow passing through packet of type video size  1843200 timestamp 664899770000 orig timestamp 664899643970 graph timestamp 664899770000 diff 126030 HD Webcam C525
    
dshow passing through packet of type video size  1843200 timestamp 664900890000 orig timestamp 664900643970 graph timestamp 664900890000 diff 246030 HD Webcam C525
    
dshow passing through packet of type video size  1843200 timestamp 664902040000 orig timestamp 664901643970 graph timestamp 664902040000 diff 396030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664902650000 orig timestamp 664902643970 graph timestamp 664902650000 diff 6030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664903610000 orig timestamp 664903643970 graph timestamp 664903610000 diff -33970 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664904570000 orig timestamp 664904643970 graph timestamp 664904570000 diff -73970 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664905520000 orig timestamp 664905643970 graph timestamp 664905520000 diff -123970 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929720000 orig timestamp 664906643970 graph timestamp 664929720000 diff 23076030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929760000 orig timestamp 664907643970 graph timestamp 664929760000 diff 22116030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929790000 orig timestamp 664908643970 graph timestamp 664929790000 diff 21146030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929820000 orig timestamp 664909643970 graph timestamp 664929820000 diff 20176030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929870000 orig timestamp 664910643970 graph timestamp 664929870000 diff 19226030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929910000 orig timestamp 664911643970 graph timestamp 664929910000 diff 18266030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929940000 orig timestamp 664912643970 graph timestamp 664929940000 diff 17296030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664929980000 orig timestamp 664913643970 graph timestamp 664929980000 diff 16336030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664930030000 orig timestamp 664914643970 graph timestamp 664930030000 diff 15386030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!
    
dshow passing through packet of type video size  1843200 timestamp 664930070000 orig timestamp 664915643970 graph timestamp 664930070000 diff 14426030 HD Webcam C525
    
[dshow @ 03dfca20] real-time buffer [HD Webcam C525] [video input] too full or near too full (121% of size: 3041280 [rtbufsize parameter])! frame dropped!

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