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Médias (91)

Autres articles (62)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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) (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

Sur d’autres sites (9573)

  • configure : Use pkg-config for libdc1394 discovery

    22 février 2015, par Vittorio Giovara
    configure : Use pkg-config for libdc1394 discovery

    Since not all systems need the libraw1394 dependency, let pkg-config
    
provide the list of libraries actually needed.
    

    The libdc1394-2.pc file has been included since version 2 (2008-01-05),
    
so it should be safe to use.
    • [DBH] configure

  • tag refuses to play mp4 video

    5 janvier 2015, par MightyPork

    I have a video I want to embed using the html5 video tag :

    I’ve converted it using ffmpeg :

    ffmpeg -i P6135199.MOV -vcodec libx264 -acodec aac helios.mp4

    FFMPEG output :

    [libx264 @ 0x22ac340] using cpu capabilities : MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x22ac340] profile High 4:2:2, level 1.2, 4:2:2 8-bit
[libx264 @ 0x22ac340] 264 - core 142 r2455 021c0dc - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options : cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to ’helios.mp4’ :
  Metadata :
    comment-eng : OLYMPUS DIGITAL CAMERA                           
    comment : OLYMPUS DIGITAL CAMERA                           
    encoder : Lavf56.15.102
    Stream #0:0(eng) : Video : h264 (libx264) ([33][0][0][0] / 0x0021), yuvj422p(pc), 320x240, q=-1—1, 15 fps, 15360 tbn, 15 tbc (default)
    Metadata :
      creation_time : 2008-06-13 10:47:16
      encoder : Lavc56.13.100 libx264
Stream mapping :
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame=  240 fps=124 q=-1.0 Lsize=     906kB time=00:00:15.86 bitrate= 467.7kbits/s    
video:902kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : 0.409100%
[libx264 @ 0x22ac340] frame I:1     Avg QP:23.71  size :  7960
[libx264 @ 0x22ac340] frame P:123   Avg QP:23.85  size :  5255
[libx264 @ 0x22ac340] frame B:116   Avg QP:25.41  size :  2317
[libx264 @ 0x22ac340] consecutive B-frames :  3.3% 96.7%  0.0%  0.0%
[libx264 @ 0x22ac340] mb I  I16..4 : 15.7% 69.0% 15.3%
[libx264 @ 0x22ac340] mb P  I16..4 :  2.2% 13.4%  0.8%  P16..4 : 43.8% 23.1% 14.0%  0.0%  0.0%    skip : 2.8%
[libx264 @ 0x22ac340] mb B  I16..4 :  0.3%  1.3%  0.1%  B16..8 : 42.4%  9.9%  3.0%  direct:12.2%  skip:30.9%  L0:37.2% L1:38.2% BI:24.5%
[libx264 @ 0x22ac340] 8x8 transform intra:80.8% inter:71.9%
[libx264 @ 0x22ac340] coded y,uvDC,uvAC intra : 76.7% 96.8% 49.7% inter : 37.8% 60.9% 5.1%
[libx264 @ 0x22ac340] i16 v,h,dc,p : 39%  4%  8% 49%
[libx264 @ 0x22ac340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu : 15% 14% 39%  6%  3%  4%  3%  6% 12%
[libx264 @ 0x22ac340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 25% 11% 18%  8%  7%  7%  8%  8%  8%
[libx264 @ 0x22ac340] i8c dc,h,v,p : 63%  7% 20% 10%
[libx264 @ 0x22ac340] Weighted P-Frames : Y:5.7% UV:0.8%
[libx264 @ 0x22ac340] ref P L0 : 51.4% 18.3% 20.6%  9.3%  0.4%
[libx264 @ 0x22ac340] ref B L0 : 80.8% 19.2%
[libx264 @ 0x22ac340] kb/s:461.52

    And I try to embed it as follows :

    <video src="helios.mp4" controls="controls">Get a better browser!</video>

    However, Chrome doesn’t play the video, only offers to download it (same as it did before I converted the video). Firefox has the same problem.

    I’ve tested and other mp4 files (from my phone) play just fine.

    What’s the problem ? Did I convert it wrong ?

  • Problems accessing codecs with ggplot and gganimate

    19 décembre 2016, par noLongerRandom

    Using gganimate. Can’t figure out how to properly access functionality of ffmpeg, specifically I want to change the codec I’m using in the video file I’m outputting.

    # load packages
    
library(ggplot)
    
library(animation)
    
library(gganimate)
    

    
# Here's my data.frame
    
myDf &lt;- data.frame(
    
    year = c(1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014), 
    
    bottom50 = c(0.195, 0.191, 0.187, 0.192, 0.196, 0.205, 0.207, 0.210, 0.209, 0.204, 0.203, 0.204, 0.205, 0.203, 0.202, 0.200, 0.200, 0.201, 0.199, 0.195, 0.190, 0.183, 0.179, 0.179, 0.177, 0.172, 0.169, 0.169, 0.168, 0.166, 0.158, 0.159, 0.158, 0.154, 0.151, 0.148, 0.149, 0.148, 0.146, 0.149, 0.148, 0.145, 0.142, 0.138, 0.135, 0.137, 0.137, 0.136, 0.130, 0.127, 0.123, 0.127, 0.125), top1 = c(0.126, 0.127, 0.129, 0.128, 0.126, 0.123, 0.122, 0.115, 0.110, 0.111, 0.111, 0.109, 0.106, 0.105, 0.105, 0.107, 0.108, 0.111, 0.107, 0.110, 0.112, 0.115, 0.125, 0.125, 0.122, 0.133, 0.149, 0.145, 0.145, 0.139, 0.150, 0.146, 0.147, 0.153, 0.160, 0.166, 0.169, 0.177, 0.183, 0.173, 0.171, 0.172, 0.183, 0.194, 0.201, 0.199, 0.195, 0.185, 0.198, 0.196, 0.208, 0.196, 0.202)
    
)
    

    
#Basic plot
    
p &lt;- ggplot(myDf, aes(x = year, y = bottom50, frame = year)) + 
    
    geom_line(color = "dodgerblue") + 
    
    geom_line(aes(y = top1), color = "darkred")

    The non-animated version gets me what I want :

    enter image description here

    And I get an animation version output to video with :

    gganimate(p, interval = .1, title_frame = FALSE, "income.mp4")

    That’s fine, but I want to change some the output parameters, specifically : alter the dimensions, the frame rate, and use a different codec.

    # change some of the options
    
ani.options(ani.height = 1080, ani.width = 1920, 
    
            interval = 0.04166667, other.opts = "-vcodec qtrle -f mov")
    
# re-animate
    
gganimate(p, title_frame = FALSE, "income.mov")

    That gives me the following error :

    Error in animation_saver(saver, filename) : 
    
  Don't know how to save animation of type mov

    I’m using ’.mov’ as my file extension because I’m trying to change to the Animation codec (so it’s no longer a .mp4 wrapper). I’ve got ffmpeg installed, so this is probably a syntax issue. But the documentation isn’t very clear here ; gganimate doesn’t have any documentation on changing codecs (or outputting any video besides an mp4), and the animation package is light on specifics as well.

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