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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (9195)

  • Revision b64359110b : Add more rate control stats to vpx_temporal_svc_encoder. Average and variance o

    14 novembre 2014, par Marco

    Changed Paths :
     Modify /examples/vpx_temporal_svc_encoder.c



    Add more rate control stats to vpx_temporal_svc_encoder.

    Average and variance of actual encoding bitrate over fixed short-time window.

    Change-Id : Icc3d6d93792c81e1fb9fd3b56008bf47a503b204

  • FFMPEG IP Camera Stream Recording

    26 août 2015, par Zohaib Khalid

    What is the short command for storing this input stream into some external file ?

    http://10.11.16.10:81/livestream.cgi?user=admin&pwd=&streamid=0&audio=0&filename=

    This is the input stream. Now I want to save it in new.mp4||.flv
    What would be the FFMPEG command ?

  • How to set frame offset for source and reference video for calculating using FFMpeg commandline ?

    1er septembre 2018, par Souvik Das

    I have a scenario where I am streaming a reference video on a server machine and receiving it at a client machine with exact same codec, using FFMpeg via UDP/RTP.

    So, I have a reference.avi file and a recording.ts file with me. Now, due to a network side issue and FFMpeg discarding old frames, often the recording.ts lacks exactly 12 FRAMES from the beginning. Sometimes, it may lack more frames in-between but that’d due to general network traffic and packet loss reason and I don’t plan to account for that. Anyways, due to those 12 frames, when I calculate the PSNR, it drops down to 13, even though remaining frames may/may not be affected.

    So, my aim is to discard first 12 frames from reference.ts and then compare. For that, I would also need to adjust the frames from recording.ts.

    Consider the following scenario :

    reference.ts has 1500 frames. So naturally I am going to cut-short it 1488. Then we have the following cases :

    1. recording.ts has 1500 frames. This is not affected. Still I will remove 12 frames to match the count. So frame 1 would then represent frame 13.
    2. recording.ts has 1496 frames. This is not affected. Still I will remove 12 frames even though it’d get to 1484 count assuming that frame 1 would then represent frame 13.
    3. recording.ts has 1488 frames. This is affected. No need to remove frames.
    4. recording.ts has 1480 frames. This is affected. No need to remove frames.

    Once that is done, then I will calcualte the PSNR. So, my FFMpeg should be able to do all this, hopefully in a single command on bash.

    A better alternative would be for FFMpeg to find the where the 13th frame is in recording.ts and then cut-short from the beginning. That’d be more preferred and even more if there is no cut-shorting required, i.e. if offset could be set in-line to command and no additional video output is generated for use in PSNR comparison.

    Current I am using the following command to calculate the PSNR.

    ffmpeg -i 'recording.ts' -vf "movie='reference.avi', psnr=stats_file='psnr.txt'" -f rawvideo -y /dev/null

    It’d be great if somebody could help me in this regard. Thanks.

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