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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 :
    ffmpeg -codecs ffmpeg -formats
    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 :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • 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 (...)

  • 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 (6036)

  • Revision 5215b83aea : Simplifying and inlining k_cvtlo_epi16 and k_cvthi_epi16 Simplify the k_cvtlo_e

    3 octobre 2013, par A.Mahfoodh

    Changed Paths :
     Modify /vp9/encoder/x86/vp9_dct32x32_sse2.c



    Simplifying and inlining k_cvtlo_epi16 and k_cvthi_epi16

    Simplify the k_cvtlo_epi16 and k_cvthi_epi16 to only two
    instructions. Then inlined them.

    quoting from intel MMX_App_Compute_16bit_Vector.pdf‎
    "The PMADDWD instruction multiplies four
    pairs of 16-bit numbers and produces partial sums of the results
    and can do so once per clock (with a three-clock latency)."
    so I am assuming that there will be three clock overhead after the
    last _mm_madd_pi16 command.
    Even with the overhead the number of clocks in general should be
    smaller. I am not sure though becasue I could not find information
    about number of clocks required for instructions in k_cvtlo_epi16
    and k_cvthi_epi16. I will run a test and compare the execution time.

    Change-Id : Ieda4aa338f69ad3dd196ac6e7892da3cf1b47ea7

  • How to know if quick sync video encoding and decoding hardware is available in your windows or linux (ubuntu) machine ?

    20 avril 2021, par jeff
      

    • I am using ffmpeg to make a video streaming web application using nodejs.

      • 


    • I want to use intel's quick sync hardware to support hardware encoding and decoding.

      • 


    • However, some machine may not support this feature so I want the software encoding and decoding as fallback

      • 


    • For this I need to know if the machine has the quick sync hardware

      • 


    • I looked it up but cant find OS api to know if the hardware api is present in the machine or not (both windows and linux)

      • 


    


  • configure : Alphabetical order for av1 codecs

    14 juin 2024, par Fei Wang
    configure : Alphabetical order for av1 codecs

    Signed-off-by : Fei Wang <fei.w.wang@intel.com>
    • [DH] configure

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