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Médias (17)

Mot : - Tags -/wired

Autres articles (60)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (9801)

  • Revision 99a132f561 : Add a seg map preservation test vector. Add a test vector to show the cases whe

    13 octobre 2014, par Alex Converse

    Changed Paths :
     Modify /test/test-data.mk


     Modify /test/test-data.sha1


     Modify /test/test_vectors.cc



    Add a seg map preservation test vector.

    Add a test vector to show the cases where segmentation map is preserved
    from frome to frame as outlined in the inquiry in issue 761.

    Change-Id : I630c6aba27d0d0b109cc7fd7c6fcd008222a0cf3

  • FFMPEG show audio frequency waves with border

    13 juillet 2020, par Nikhil Solanki

    I am trying to generate sine waves or audio frequency like this using this command :

    


    ffmpeg -i combine2.mp4 -i image1.png -i song.mp3 -t 20 -filter_complex "[0]split=2[color][alpha]; [color]crop=iw/2:ih:0:0[color]; [alpha]crop=iw/2:ih:iw/2:ih[alpha]; [color][alpha]alphamerge[v1];
[1]scale=540:960, setsar=1[v2];
[2]showfreqs=s=540x100:mode=line:ascale=sqrt:colors=white|red[v3];
[v2][v3] overlay=main_w-overlay_w:main_h-overlay_h-10[v4];
[v4][v1] overlay=1" output_video2.mp4 -y


    


    This command shows frequency of audio with white colour only and also its not smooth as above image. So, how can I generate waves like above image smooth and bordered ?

    


    Output video :
screenshot

    


  • Using ffmpeg create an android playable music slide show

    22 avril 2014, par user2637966

    I am now creating a music slide mp4 video and going to play it in android device with ffmpeg.

    I used the following command to accomplish this mission.

    The first one is to inputting a batch of jpg files and convert it to a mp4 file.

    1.)C:/xampp/htdocs/bin/ffmpeg -y -r 1/5 -i C:/xampp/htdocs/bin/%03d.jpg -c:v libx264 -profile:v baseline -level 3.0 -r 30 -pix_fmt yuv420p C:/xampp/htdocs/bin/out.mp4

    The second one is to putting the audio to the previous created video.

    2.)C:/xampp/htdocs/bin/ffmpeg -i C:/xampp/htdocs/bin/out.mp4 -i C:/xampp/htdocs/upload/1.mp3 -y -map 0 -map 1 -codec copy -shortest C:/xampp/htdocs/bin/haha.mp4"

    Both of the command are correct and created the mp4 file. However only out.mp4 can be played in android deivce while haha.mp4 cannot.

    So it seems the audio track violate the android mp4 requirement. What should the second command be so that i can play the mp4 file in android device.

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