Recherche avancée

Médias (1)

Mot : - Tags -/Christian Nold

Autres articles (52)

  • 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 (...)

  • 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 (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

Sur d’autres sites (6280)

  • Video recoding with ffmpeg

    8 novembre 2011, par Aleks G

    I asked in another question (http://stackoverflow.com/questions/8012494/sorry-this-video-cannot-be-played-streaming-mp4-to-android/8012874#8012874) about video playback in android using VideoView. Apparently, the problem there is due to the way my video is encoded, as another video (512Kb mp4 off the web) plays correctly using my code. As videos are uploaded by my end users to the web site, I don't have any control of the videos themselves, however I do have control over re-coding these. I re-code them using ffmpeg to bring them to a standard MP4 (H.264+AAC) format and scale them to the same size (320x240).

    Here's the ffmpeg info of a video that would not play :

    sh-3.2$ ffmpeg -i video.bad.mp4
    
FFmpeg version SVN-r25679-snapshot, Copyright (c) 2000-2010 the FFmpeg developers
    
  built on Nov  5 2010 09:34:37 with gcc 4.3.2
    
  configuration: --prefix=/usr --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-libgsm --enable-x11grab --enable-libx264 --enable-libtheora --extra-cflags=-Wall --enable-swscale --enable-libdc1394 --enable-nonfree --disable-mmx --disable-stripping --enable-avfilter --disable-altivec --disable-armv5te --disable-armv6 --disable-vis --enable-nonfree --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3
    
  libavutil     50.32. 6 / 50.32. 6
    
  libavcore      0.12. 0 /  0.12. 0
    
  libavcodec    52.94. 3 / 52.94. 3
    
  libavformat   52.84. 0 / 52.84. 0
    
  libavdevice   52. 2. 2 / 52. 2. 2
    
  libavfilter    1.56. 0 /  1.56. 0
    
  libswscale     0.12. 0 /  0.12. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.bad.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf52.84.0
    
  Duration: 00:00:45.93, start: 0.000000, bitrate: 591 kb/s
    
    Stream #0.0(und): Video: h264, yuv420p, 320x240 [PAR 1:1 DAR 4:3], 535 kb/s, 15 fps, 15 tbr, 15 tbn, 30 tbc
    
    Stream #0.1(und): Audio: aac, 48000 Hz, stereo, s16, 51 kb/s

    And here's the ffmpeg info of a video that plays correctly :

    sh-3.2$ ffmpeg -i video.mp4
    
FFmpeg version SVN-r25679-snapshot, Copyright (c) 2000-2010 the FFmpeg developers
    
  built on Nov  5 2010 09:34:37 with gcc 4.3.2
    
  configuration: --prefix=/usr --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-libgsm --enable-x11grab --enable-libx264 --enable-libtheora --extra-cflags=-Wall --enable-swscale --enable-libdc1394 --enable-nonfree --disable-mmx --disable-stripping --enable-avfilter --disable-altivec --disable-armv5te --disable-armv6 --disable-vis --enable-nonfree --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3
    
  libavutil     50.32. 6 / 50.32. 6
    
  libavcore      0.12. 0 /  0.12. 0
    
  libavcodec    52.94. 3 / 52.94. 3
    
  libavformat   52.84. 0 / 52.84. 0
    
  libavdevice   52. 2. 2 / 52. 2. 2
    
  libavfilter    1.56. 0 /  1.56. 0
    
  libswscale     0.12. 0 /  0.12. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: mp41
    
    title           : crazytown - http://www.archive.org/details/Cartoon-Crazytown
    
    encoder         : Lavf51.10.0
    
  Duration: 00:07:50.40, start: 0.000000, bitrate: 578 kb/s
    
    Stream #0.0(und): Video: h264, yuv420p, 320x240, 510 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
    
    Stream #0.1(und): Audio: aac, 48000 Hz, stereo, s16, 63 kb/s

    I have two questions here, actually. First, which of the details in my "bad" video does android not like ? And, second, what parameters should I use with ffmpeg to recode my videos ? As present I use this :

    ffmpeg -i $input_video_file -y -s 320x240 -vcodec libx264 -vpre medium -acodec libfaac -b 510K -ar 48000 -aspect 4:3 $tmpfile.mp4
    
qt-faststart $tmpfile.mp4 $output_video_file.mp4

    But this produces a video that's not playable on android. Any help is greatly appreciated.

  • Linux Platform : Enlarge video screen size N times

    27 janvier 2012, par Susan Mayer

    I am looking for a application on Linux platforms (Ubuntu/CentOS etc) that can enlarge video size N times. N could be any number, like 1.5, 4 etc

    For example, if I have a video with screen size 100*200, I want to make it 1.5 times larger, that will be : 150*300. Of course, I will expect the video quality to drop but it doesnt matter.

    I am not sure whether ffmpeg has this function but a quick Google lands me nowhere. So I am here now.

    Thanks a lot !

  • ffmpeg video encoding for mobile devices

    27 janvier 2012, par TimGL

    I'm trying to encode the video file from f4v to mp4 for mobile devices and using 2 different ffmpeg versions with the same configuration files. Encoding goes ok for both files. The one that I convert using ffmpeg version N-32754-g936d4d4-Sherpya failing to play on my blackberry.
    This is the command line that I'm using :

    ffmpeg.exe -i some.avs -vcodec libx264 -b 500k -r 24 -acodec libfaac -ab 128k -ar 48000 -ac 2 -threads 0 -coder 0 -bf 0 -refs 1 -level 30 -maxrate 10000000 -bufsize 10000000 -y test.mp4

    The vido playes ok when I convert it using FFmpeg version SVN-r13712
    Could you give me some light on where the issue couls be ?

Navigation