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Autres articles (43)

  • 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 (...)

  • 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 (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (7714)

  • how to have live video streaming using ffmpeg command or using tcl 8.0 script on windows 10 platform [duplicate]

    16 novembre 2017, par M. D. P

    This question is an exact duplicate of :

    I am able to capture the video and image by using ffmpeg in tcl script, but I want to have live video streaming for my multiple webcams for tcl version 8.0 on windows 10.

    I tryed :

    ffmpeg -f vfwcap -r 25 -i 0 sample.avi

    for video capturing, it works

    ffmpeg -f vfwcap -r 25 -i 0

    and I tried this for live video streaming by it didn’t http://wiki.tcl.tk/40194
    So what will be the right command for live video streaming.

    exec [list ffmpeg -f dshow -t 00:00:10 -i "video=Integrated Webcam" -b 5000k -s 1280x720 c :/test/sample-a.avi] &

    also tried with this, still not working

  • FFmpeg output video file much smaller than uncompressed input audio file, using option to preserve original audio quality

    17 mars 2021, par Jan

    I attempt to create a video slideshow from a number of image files and an audio file in 2 steps :

    


      

    1. Create a temporary video file from a sequence of image files

      2. 


    2. Add an audio file to the temporary video file with a delay of 5 seconds

      3. 


    


    The audio file is an uncompressed stereo wav file, encoded with a sample rate of 44100 Hz and a bit depth of 32 bits, with a size of 40.1 MB. To preserve the lossless quality of the input audio file I use the option -c:a aac -b:a 192k as per Slideshow Wiki. However, the final output video file has a size of only 4.49 MB.

    


    How can the output video file be about 10 times smaller than the input audio file and still preserve the original lossless quality ?

    


    My code :

    


    ffmpeg -f concat -i slide-sequence.txt -c:v libx264 -r 30 -filter_complex format=yuv420p temp.mp4
ffmpeg -i temp.mp4 -i audio.wav -af "adelay=5000|5000" -c:v copy -c:a aac -b:a 192k out.mp4


    


  • How to use FFmpeg(v 4.0) HwAccell in Android

    21 novembre 2018, par 심상원

    I’m making an app that uses FFmpeg on Android to show the screen.

    I have a few questions to ask you.

    std::vector <avhwdevicetype> GetSupportHwDeviceType ()
    
{
    
    unsigned int idx {};
    
    std::vector <avhwdevicetype> hwDevTypes;
    

    
    AVHWDeviceType hwDevType = AVHWDeviceType::AV_HWDEVICE_TYPE_NONE;
    
    while ((hwDevType = av_hwdevice_iterate_types (hwDevType)) ! = AVHWDeviceType::AV_HWDEVICE_TYPE_NONE)
    
    {
    
        __android_log_print (ANDROID_LOG_DEBUG, __func__, "[Index% d]", idx ++);
    
        __android_log_print (ANDROID_LOG_DEBUG, __func__,
    
                        "[Support Device Name% s]", av_hwdevice_get_type_name (hwDevType));
    

    
        hwDevTypes.push_back (hwDevType);
    
    }
    

    
    return hwDevTypes;
    
}
    
</avhwdevicetype></avhwdevicetype>

    I would like to use hardware acceleration with the above function, and as a result I could not find any type.

    At https://trac.ffmpeg.org/wiki/HWAccelIntro, it says that Android can use MediaCodec. Why can not I retrieve any type from Android NDK with GetSupportHwDeviceType () ?

    The Configure argument used while building FFmpeg for Android.

    --disable-asm
    
--enable-cross-comile
    
--disable-static
    
--disable-programs
    
--disable-doc
    
--enable-shared
    
--enable-protocol=file
    
--enable-pic
    
--enable-small
    
--enable-mediacodec
    
--enable-jni
    
--enable-decoder=h264_mediacodec
    
--enable-opengl
    

    
/* The argument was not supported by ./configure --list-hwaccel in FFmpeg v4.0.3. */
    

    
--enable-hwaccel=h264_mediacodec

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