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Autres articles (96)

  • 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 (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (11139)

  • fftools/ffmpeg : Add system time and real time to benchmarking.

    27 avril 2018, par Mark Wachsler
    fftools/ffmpeg : Add system time and real time to benchmarking.

    The -benchmark and -benchmark_all options now show user, system, and real time,
    
instead of just user time.
    

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] fftools/ffmpeg.c

  • Crash in ffmpeg avcodec_free_context in one application but not in other

    5 novembre 2017, par geekowl

    I am building an application in C++ on Windows 10 using Microsoft Visual Studio 2012 Professional.

    I have created a wrapper library around ffmpeg (libavcodec) to encode video in H.264 format using libx264. This wrapper contains following functions :

    Initialize()
    
Open()
    
EncodeFrame()
    
Close()
    
Uninitialize()

    I created a test application to test the wrapper library. The test application works perfectly fine.

    When I use the wrapper library in my actual main application, the main application crashes in Close() API. Inside close, it crashes in avcodec_free_context(). The difference between the main application and the test application is that the main application links with some more dependent libraries that test application does not link with.

    To debug the problem in the main application, I put avcodec_free_context() in Open() after the context is allocated. The crash occurs if avcodec_free_context() is put at a certain point as shown below.

    pCodecContext = avcodec_alloc_context3(pCodec);
    

    
// &lt;---- No crash here.
    

    
pCodecContext->bit_rate = 200000;
    
pCodecContext->width = 320;
    
pCodecContext->height = 240;
    
.
    
.
    
.
    
if (pCodec->id == AV_CODEC_ID_H264)
    
{
    
    av_opt_set(pCodecContext->priv_data, "preset", "slow", 0);
    
    av_opt_set(pCodecContext->priv_data, "tune", "zerolatency", 0);
    
}
    

    
pCodecContext->flags |= CODEC_FLAG_GLOBAL_HEADER;
    

    
// &lt;-- No crash here
    

    
if (avcodec_open2(pCodecContext, pCodec, NULL) &lt; 0)
    
{
    
    return -1;
    
}
    

    
// &lt;-- Crash here [avcodec_free_context(&amp;pCodecContext);]

    What is a correct approach to identify and resolve this problem ?

    Thanks in advance.

    Update

    I found out that ffmpeg was built using gcc. That was causing the crash. I rebuilt ffmpeg using Visual Studio. That solved problem.

  • Crash in ffmpeg avcodec_free_context in one application but not in other

    5 novembre 2017, par geekowl

    I am building an application in C++ on Windows 10 using Microsoft Visual Studio 2012 Professional.

    I have created a wrapper library around ffmpeg (libavcodec) to encode video in H.264 format using libx264. This wrapper contains following functions :

    Initialize()
    
Open()
    
EncodeFrame()
    
Close()
    
Uninitialize()

    I created a test application to test the wrapper library. The test application works perfectly fine.

    When I use the wrapper library in my actual main application, the main application crashes in Close() API. Inside close, it crashes in avcodec_free_context(). The difference between the main application and the test application is that the main application links with some more dependent libraries that test application does not link with.

    To debug the problem in the main application, I put avcodec_free_context() in Open() after the context is allocated. The crash occurs if avcodec_free_context() is put at a certain point as shown below.

    pCodecContext = avcodec_alloc_context3(pCodec);
    

    
// &lt;---- No crash here.
    

    
pCodecContext->bit_rate = 200000;
    
pCodecContext->width = 320;
    
pCodecContext->height = 240;
    
.
    
.
    
.
    
if (pCodec->id == AV_CODEC_ID_H264)
    
{
    
    av_opt_set(pCodecContext->priv_data, "preset", "slow", 0);
    
    av_opt_set(pCodecContext->priv_data, "tune", "zerolatency", 0);
    
}
    

    
pCodecContext->flags |= CODEC_FLAG_GLOBAL_HEADER;
    

    
// &lt;-- No crash here
    

    
if (avcodec_open2(pCodecContext, pCodec, NULL) &lt; 0)
    
{
    
    return -1;
    
}
    

    
// &lt;-- Crash here [avcodec_free_context(&amp;pCodecContext);]

    What is a correct approach to identify and resolve this problem ?

    Thanks in advance.

    Update

    I found out that ffmpeg was built using gcc. That was causing the crash. I rebuilt ffmpeg using Visual Studio. That solved problem.

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