Recherche avancée

Médias (1)

Mot : - Tags -/ogg

Autres articles (33)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

  • Sélection de projets utilisant MediaSPIP

    29 avril 2011, par

    Les exemples cités ci-dessous sont des éléments représentatifs d’usages spécifiques de MediaSPIP pour certains projets.
    Vous pensez avoir un site "remarquable" réalisé avec MediaSPIP ? Faites le nous savoir ici.
    Ferme MediaSPIP @ Infini
    L’Association Infini développe des activités d’accueil, de point d’accès internet, de formation, de conduite de projets innovants dans le domaine des Technologies de l’Information et de la Communication, et l’hébergement de sites. Elle joue en la matière un rôle unique (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

Sur d’autres sites (4658)

  • 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

  • Best and latest live video streaming soloution [on hold]

    3 avril 2015, par Ford

    I have read a few old posts on StackOverflow about live video streamins, but as they are from around 2008, i assume things have moved on from then... and wonder if a current thread will be useful to me and others.
    Also looking on google gives lots of stuff, but again i dont know who is best to listen to and who is trying to sell their stuff (not that i am against paying).

    Basically what are the main points i need to know in order to add/develope a feature to a website in order to offer "1 on 1" and "1 to many" MULTIPLE live streaming webcam, with voice and text chat.

    I am quiet competent with PHP, OK with basic JavaScript (of course fine with HTMLL/css), but do not know what code i would need for client side software, or if any "off the shelf" software is suitable.
    I have played with ffmpeg and noticed this offers streaming, but i dont know if it would be suitable or the best available option.?
    I have a dedicated server with virtualization so can add a dedicated box for streaming if needed/better.

    Any info that can point me off in the right direction of how to add a live streaming service to a website would be much appreciated !

  • Mozilla Firefox 36 has problems playing my h264 MP4 files

    11 juin 2015, par Wolfgang Pürstner

    I try to convert videos with ffmpeg to mp4 format (h264) Profile : High Level : 3.1 (1280x720 with 30fps), Bitrate 1500k

    The video plays very well in every browser except in Firefox.

    http://5.79.72.89/trailer/trailer.mp4

    At first it needs longer to load and when I seek inside the video most times the video don’t stop to load and never plays again.
    I can see a lot of partial downloads in the developer console. A lot of them are for the initial play and the rest of the requests are during the video load when I seek to a later position.

    enter image description here

    When I play other h264 Videos (MP4 with similar settings) they play without problems on this server.
    And when I put my video on another webserver (apache) there are the same problems with Firefox.

    For this reason I believe it has to do something with me my conversion.

    My settings :
    Debian 7 (wheezy)
    Webserver : nginx (with 260k bandwidth limit)

    I started converting videos with avconv and switched to ffmpeg because of this problems. But there was no success.
    Meanwhile I tried all options for encoding but there are always the same problems with Firefox. Other videos play well but not mines and I don’t know why.

    Command :

    ffmpeg -i input.mp4 -tune zerolatency -x264opts bitrate=1500:vbv-maxrate=1500:vbv-bufsize=3000:nal-hrd=vbr -codec:v libx264 -profile:v high -level 3.1 -movflags +faststart -pix_fmt yuv420p  -s 1280x720 -r 30 -ac 2 -ar 48000 -codec:a aac -ab 64k -strict experimental -y trailer.mp4

    ffmpeg 1.0.10
libavutil      51. 73.101 / 51. 73.101
libavcodec     54. 59.100 / 54. 59.100
libavformat    54. 29.104 / 54. 29.104
libavdevice    54.  2.101 / 54.  2.101
libavfilter     3. 17.100 /  3. 17.100
libswscale      2.  1.101 /  2.  1.101
libswresample   0. 15.100 /  0. 15.100
libpostproc    52.  0.100 / 52.  0.100

    Mediainfo of the file : trailer.mp4

    General
Complete name : trailer.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 115 MiB
Duration : 10mn 34s
Overall bit rate : 1 516 Kbps
Movie name : Big Buck Bunny, Sunflower version
Performer : Blender Foundation 2008, Janus Bager Kristensen 2013
Composer : Sacha Goedegebure
Genre : Animation
Writing application : Lavf54.29.104
Comment : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net

    Video
    
ID : 1
    
Format : AVC
    
Format/Info : Advanced Video Codec
    
Format profile : High@L3.1
    
Format settings, CABAC : Yes
    
Format settings, ReFrames : 4 frames
    
Codec ID : avc1
    
Codec ID/Info : Advanced Video Coding
    
Duration : 10mn 34s
    
Bit rate : 1 500 Kbps
    
Width : 1 920 pixels
    
Height : 1 080 pixels
    
Display aspect ratio : 16:9
    
Frame rate mode : Constant
    
Frame rate : 30.000 fps
    
Color space : YUV
    
Chroma subsampling : 4:2:0
    
Bit depth : 8 bits
    
Scan type : Progressive
    
Bits/(Pixel*Frame) : 0.024
    
Stream size : 109 MiB (95%)
    
Writing library : x264 core 132
    
Encoding settings : cabac=1 / ref=4 / 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=12 / lookahead_threads=2 / 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=50 / keyint_min=5 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=cbr / mbtree=1 / bitrate=1500 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=1500 / vbv_bufsize=3000 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00
    

    Audio
    
ID : 2
    
Format : AAC
    
Format/Info : Advanced Audio Codec
    
Format profile : LC
    
Codec ID : 40
    
Duration : 10mn 34s
    
Duration_LastFrame : -11ms
    
Bit rate mode : Constant
    
Bit rate : 64.2 Kbps
    
Channel(s) : 2 channels
    
Channel positions : Front : L R
    
Sampling rate : 48.0 KHz
    
Compression mode : Lossy
    
Delay relative to video : -2ms
    
Stream size : 4.85 MiB (4%)

    I don’t know what is wrong with my files.

    Update 2015-03-12 :

    If I convert the video without audio stream there is no problem with firefox anymore.

    I updated ffmpeg to 2.6. I used libfaac, aac and libfdk_aac for audio encoding with cbr and vbr but without success.

Navigation