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Autres articles (43)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • 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 (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (5567)

  • ffmpeg cut video at specified start position

    15 septembre 2014, par user2648561

    I’m trying to use ffmpeg to cut out part of an avi file.
    I know similar questions have been asked before, but i’ve trawled through loads of other posts and I can’t see where I’m going wrong.

    The command line args i’m using to test on a 7 second video is :

    -ss 00:00:01 -t 00:00:01 -i "C :\recordings\2013-09-11\Camera 1\Camera 1_2013-09-11_22-23-43.avi" -vcodec copy -acodec copy "I :\clip2.avi"

    The output is :

    ffmpeg version N-56254-gb7bd688 Copyright (c) 2000-2013 the FFmpeg developers built on Sep 12 2013 21:00:14 with gcc 4.7.3 (GCC) configuration :
    —enable-gpl —enable-version3 —disable-w32threads —enable-avisynth —enable-bzlib —enable-fontconfig —enable-frei0r —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libcaca —enable-libfreetype —enable-libgsm —enable-libilbc —enable-libmodplug —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libschroedinger —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvo-aacenc —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxavs —enable-libxvid —enable-zlib
    libavutil 52. 43.100 / 52. 43.100
    libavcodec 55. 31.101 / 55. 31.101
    libavformat 55. 16.102 / 55. 16.102
    libavdevice 55. 3.100 / 55. 3.100
    libavfilter 3. 84.100 / 3. 84.100
    libswscale 2. 5.100 / 2. 5.100
    libswresample 0. 17.103 / 0. 17.103
    libpostproc 52. 3.100 / 52. 3.100

    Guessed Channel Layout for  Input Stream #0.1 : mono
    

    
Input #0, avi, from 'C:\recordings\2013-09-11\Camera 1\Camera 1_2013-09-11_22-23-43.avi':
    
  Duration: 00:00:07.03, start: 0.000000, bitrate: 787 kb/s
    
    Stream #0:0: Video: msmpeg4v3 (DIV3 / 0x33564944), yuv420p, 800x448, 30 fps, 30 tbr, 30 tbn, 30 tbc
    
    Stream #0:1: Audio: adpcm_ms ([2][0][0][0] / 0x0002), 44100 Hz, mono, s16, 176 kb/s
    
Output #0, avi, to 'I:\clip2.avi':
    
  Metadata:
    
    ISFT            : Lavf55.16.102
    
    Stream #0:0: Video: msmpeg4v3 (DIV3 / 0x33564944), yuv420p, 800x448, q=2-31, 30 fps, 30 tbn, 30 tbc
    
    Stream #0:1: Audio: adpcm_ms ([2][0][0][0] / 0x0002), 44100 Hz, mono, 176 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=   88 fps=0.0 q=-1.0 Lsize=     226kB time=00:00:02.03 bitrate= 908.7kbits/s    
    

    
video:146kB audio:66kB subtitle:0 global headers:0kB muxing overhead 6.345259%

    I end up with a clip which is 3 seconds long !!!??
    In the output I can see that the -ss flag is completely ignored.

    Can anyone see where I’m going wrong ?

    Thanks

  • mp4 video fragmented using ffmpeg takes long time to start playing

    14 mai 2020, par daldoy

    When using ffmpeg, to stream the output file to S3, it is required to use "-movflags frag_keyframe", and the generated file will be a fragmented mp4.

    



    When I try to play this files from S3 it takes a long time to start playing. I have tried the recommended movflags from MDN Docs and all the possible combinations.

    



    ffmpeg -i https://notreal-bucket.s3-us-west-1.amazonaws.com/video/video.mp4 -f mp4 -movflags frag_keyframe+empty_moov pipe:1 | aws s3 cp - s3://notreal-bucket/video/output.mp4

    



    Link of the file : https://happy-testing.s3-eu-west-1.amazonaws.com/stack-overflow/help.mp4

    


  • Revision a425e2cc06 : Add marker bit to bool-coded partition start Adds a marker bit to allow disting

    7 juin 2013, par John Koleszar

    Changed Paths :
     Modify /test/vp9_boolcoder_test.cc


     Modify /vp9/decoder/vp9_dboolhuff.c


     Modify /vp9/encoder/vp9_boolhuff.c



    Add marker bit to bool-coded partition start

    Adds a marker bit to allow distinguishing the frame header from its residual
    data.

    Change-Id : Id75d47acc9e5a97007e4690c4f8748a4ce63e641

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