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  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • 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 a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
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Sur d’autres sites (3121)

  • i want to convert images(3 4ea) and mp3 to mp4 file

    15 juillet 2015, par John smith

    i am convert images(3 4) and mp3 to video with ffmpeg

    i use this command

    ffmpeg -loop 1 -i %05d.jpg -i sample.mp3 -c:v libx264 -tune stillimage -c:a aac -strict experimental -b:a 192k -pix_fmt yuv420p -shortest out.mp4

    converting is well done. but, Images are changing very short period.

    i want to set images changing period once every 10 15 seconds.

    How would I do that using ffmpeg ?

  • Quicktime cannot play recorded mp4 video file

    17 septembre 2014, par Dude

    I have an mp4 related issue. I’m not very good in video processing related stuff. We have a problem with an image file that is recorded via HTTP Live Streaming (HLS) from a live stream. The HLS chunks are just put together and saved on the file system as .mp4 file. This file cannot be played with Apple QuickTime. VLC can play it. But it is a requirement that it can be played with QuickTime.

    However, I found a solution that works. When I use the ffmpeg command -reset_timestamps, the video file can be played with QuickTime. I also see which parameter changes. It’s the start value.

    Before use of the command :

    ffmpeg -i recorded_file.mp4 
    

    
ffmpeg version 1.2.4 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Jan  9 2014 09:06:57 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
[h264 @ 0x7fcb7b015a00] non-existing SPS 2 referenced in buffering period
    
[h264 @ 0x7fcb7b015a00] non-existing PPS referenced
    
[h264 @ 0x7fcb7b015a00] non-existing SPS 2 referenced in buffering period
    
[h264 @ 0x7fcb7b015a00] non-existing PPS 0 referenced
    
[h264 @ 0x7fcb7b015a00] decode_slice_header error
    
[h264 @ 0x7fcb7b015a00] no frame!
    
[mpegts @ 0x7fcb7b004a00] max_analyze_duration 5000000 reached at 5013333 microseconds
    
[mpegts @ 0x7fcb7b004a00] Could not find codec parameters for stream 2 (Unknown: none ([21][0][0][0] / 0x0015)): unknown codec
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
[NULL @ 0x7fcb7b016a00] start time is not set in estimate_timings_from_pts
    
Input #0, mpegts, from 'recorded_file.mp4':
    
  Duration: 00:25:00.01, start: 68428.580933, bitrate: 1499 kb/s
    
  Program 1 
    
    Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0:1[0x101]: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 124 kb/s
    
    Stream #0:2[0x102]: Unknown: none ([21][0][0][0] / 0x0015)

    Use of the command :

    ffmpeg -i recorded_file.mp4 output.mp4 -reset_timestamps 0

    File after use of the command :

    ffmpeg -i output.mp4 
    

    
ffmpeg version 1.2.4 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Jan  9 2014 09:06:57 with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf54.63.104
    
  Duration: 00:25:00.04, start: 0.021333, bitrate: 1358 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 1224 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s
    
    Metadata:
    
      handler_name    : SoundHandler

    A lot of the text output changes but the line with the duration, start and bitrate is interesting, as the start value is set to near zero.

    Duration: 00:25:00.04, start: 0.021333, bitrate: 1358 kb/s

    So to use this solution would be enough. The problem is, I cannot use ffmpeg in the solution that downloads the file (it’s for Android). So I try to find a way to do this in Java. However, as I have not much experience in Video processing, I can’t figure out, what this ffmpeg command does and therefore don’t know in which direction to look for a Java solution.

    Is there a library that may do the same operation in Java or is there an easy way to do it myself in Java (like adjusting the file timestamp) ?

    Thanks for you help !

    EDIT : The whole console output is now shown, instead of just a part of it.

  • Merge commit ’304e916a92bc17385a485bec2f957e192257ddb6’

    14 février 2014, par Michael Niedermayer
    Merge commit ’304e916a92bc17385a485bec2f957e192257ddb6’

    * commit ’304e916a92bc17385a485bec2f957e192257ddb6’ :
    
  h264_sei : name buffering period type consistently
    

    Merged-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavcodec/h264.h
    • [DH] libavcodec/h264_sei.c

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