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  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
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    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
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    Dans un premier temps on (...)

  • 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 (...)

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    2 octobre 2011, par Compn

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  • Transcoding a video from GoToMeeting WMV to MP4 using FFMPEG on Windows locks up dos window [migrated]

    22 août 2011, par Ryan

    I've been tasked with converting some pre-recorded GoToMeeting videos from wmv to mp4 format. I've got the GoToMeeting transcoder app available from Citrix (g2mtranscoder.exe) that takes the source wmv and makes it so that ffmpeg can work with the wmv. The problem I have is when I then try and take that wmv and transcode it to mp4.

    I'm using the latest pre-compiled static version of ffmpeg for Windows from here http://ffmpeg.zeranoe.com/builds/

    Here is the command line I'm using to begin the conversion :

    "C:\ffmpeg\ffmpeg.exe" -i "999_1366_768_g2m_transcoded.wmv" -f "mp4" -b "1000k" -r "30" -ab "128k" -ar "22050" -s "1366x768" -strict "experimental" -y "999.mp4"

    Here is FFMPEG's output. The last line is where the dos window seems to stop executing/locks up (when I say lock up I mean just the dos window is locked up, not the entire machine) :

    ffmpeg version N-31932-g41bf67d, Copyright (c) 2000-2011 the FFmpeg developers built on Aug 16 2011 18:54:12 with gcc 4.6.1
    configuration: --enable-gpl --enable-version3 --enable-memalign-hack --enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-frei0r --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
     libavutil    51. 12. 0 / 51. 12. 0
     libavcodec   53. 10. 0 / 53. 10. 0
     libavformat  53.  7. 0 / 53.  7. 0
     libavdevice  53.  3. 0 / 53.  3. 0
     libavfilter   2. 31. 1 /  2. 31. 1
     libswscale    2.  0. 0 /  2.  0. 0
     libpostproc  51.  2. 0 / 51.  2. 0
    [asf @ 01BBB600] max_analyze_duration 5000000 reached at 5194000

    Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 59.92 (719/12)
    Input #0, asf, from 'D:\Inetpub\g2m\Transcoding\999_1366_768_g2m_transcoded.wmv':
     Metadata:
       WMFSDKVersion   : 10.00.00.4007
       WMFSDKNeeded    : 0.0.0.0000
       IsVBR           : 1
       VBR Peak        : 4403
       Buffer Average  : 1470
       WM/ToolVersion  : 4.8 Build 723
       WM/ToolName     : GoToMeeting
       BitRateFrom the writer: 1553
       Audio samples   : 6221
       Video samples   : 3455
       recording time  : Mon, 22 Aug 2011 11:48:42 Eastern Daylight Time
     Duration: 00:38:30.71, start: 0.000000, bitrate: 160 kb/s
       Stream #0.0: Audio: wmav2, 44100 Hz, 1 channels, s16, 48 kb/s
       Stream #0.1: Video: wmv3 (Main), yuv420p, 1366x768, 2154 kb/s, 59.92 tbr, 1k tbn, 1k tbc
    [buffer @ 01BBC120] w:1366 h:768 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
    Output #0, mp4, to '\\nas4\FMS_APPLICATIONS\SVC\sk12\webinars\999.mp4':
     Metadata:
       WMFSDKVersion   : 10.00.00.4007
       WMFSDKNeeded    : 0.0.0.0000
       IsVBR           : 1
       VBR Peak        : 4403
       Buffer Average  : 1470
       WM/ToolVersion  : 4.8 Build 723
       WM/ToolName     : GoToMeeting
       BitRateFrom the writer: 1553
       Audio samples   : 6221
       Video samples   : 3455
       recording time  : Mon, 22 Aug 2011 11:48:42 Eastern Daylight Time
       encoder         : Lavf53.7.0
       Stream #0.0: Video: mpeg4, yuv420p, 1366x768, q=2-31, 1000 kb/s, 30 tbn, 30 tbc
       Stream #0.1: Audio: aac, 22050 Hz, 1 channels, s16, 128 kb/s
    Stream mapping:
     Stream #0.1 -> #0.0
     Stream #0.0 -> #0.1
    Press [q] to stop, [?] for help
    frame=  149 fps= 63 q=23.5 size=    1103kB time=00:00:04.96 bitrate=1818.6kbits/s dup=144 drop=0

    Does anyone have any idea why it's locking up the dos window and essentially failing to convert the file to mp4 ? I had a friend test it on a linux box and he was able to convert the video just fine.

    Thanks