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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 (...)

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 is the first MediaSPIP stable release.
    Its official release date is June 21, 2013 and is announced here.
    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 (...)

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  • Warning VSP2005 & Error VSP1048 when instrumenting C++ code dynamically linked to FFMPEG

    6 mai 2015, par TTJG

    I am trying to profile my project with the Instrumentation profiler of Visual Studio 2013 Ultimate. I have a 64bit C++ project which is dynamically linked to FFMPEG. However, the profiler is giving me the following error Error VSP1048: Internal instrumentation error. I don’t want to profile FFMPEG but only analyze the performance of my code. I downloaded the pre-built FFMPEG libs from this site ffmpeg.zeranoe.com/builds/. The project is also linking against Boost, live555 and x264. It is running and debugging fine. The full output of the profiler is :

    Profiling started.
    
Instrumenting ...\Player.exe in place
    
Info VSP3049: Small functions will be excluded from instrumentation.
    
Microsoft (R) VSInstr Post-Link Instrumentation 12.0.21005 x64
    
Copyright (C) Microsoft Corp. All rights reserved.
    
Warning VSP2005: Internal instrumentation warning: The object '...\ffmpeg-20150506-git-a2190de-win64-dev\lib\avutil.lib(dbyqh.o)' was built without debug information.
    
File to Process:
    
\Player.exe --> ...\Player.exe
    
Original file backed up to ...\Player.exe.orig
    
Warning VSP2005: Internal instrumentation warning: The object '...\ffmpeg-20150506-git-a2190de-win64-dev\lib\avutil.lib(dbyqh.o)' was built without debug information.
    
Error VSP1048: Internal instrumentation error.
    
PRF0002: Instrumentation failed with these options: /u "...\Player.exe"   /excludesmallfuncs.  Please check the output window for additional details.
    
Data written to ...\Player150506.vsp.
    
Profiling finished.
    
File contains no data buffers
    
File contains no data buffers
    
Analysis failed
    
Profiling complete.

    Any ideas how this could be solved ? I have found very little about this issue on the Internet.

  • libavutil/hwcontext_d3d11va : adding more texture information to the D3D11 hwcontext API

    20 août 2021, par Artem Galin
    libavutil/hwcontext_d3d11va : adding more texture information to the D3D11 hwcontext API

    Microsoft VideoProcessor requires texture with D3DUSAGE_RENDERTARGET flag as output.
    
There is no way to allocate array of textures with D3D11_BIND_RENDER_TARGET flag
    
and .ArraySize > 2 by ID3D11Device_CreateTexture2D due to the Microsoft limitation.
    
Adding AVD3D11FrameDescriptors array to store array of single textures
    
instead of texture with multiple slices resolves this.
    

    Signed-off-by : Artem Galin <artem.galin@intel.com>
    • [DH] doc/APIchanges
    • [DH] libavutil/hwcontext_d3d11va.c
    • [DH] libavutil/hwcontext_d3d11va.h
    • [DH] libavutil/hwcontext_qsv.c
    • [DH] libavutil/version.h

  • FFMPEG compilation without compiler optimization

    11 juin 2014, par Kamil_H

    I’m compiling ffmpeg for win32 using Microsoft cl compiler. I need to compile it without any optimization, so added configure —extra-cflags= -Od".

    Compilation goes fine, but there are a few places like this :

    Last 3 ifs.

    The code compiles, but doesn’t link because calls like ff_sbrdsp_init_arm(s) ; are not removed by compiler. Of course everything is fine when compiling with optimization. Then compiler removes all if(0)s.

    There are several similar places in ffmpeg. Why if(0) is used instead of preprocessor’s #if 0 ?

    Is there any hidden trick behind this ?

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