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Médias (1)

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Autres articles (21)

  • 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

  • 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 (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

Sur d’autres sites (4139)

  • FFMPEG -filter_complex is not generating desired output

    24 octobre 2017, par Mubbashar

    I am trying to
    embed subtitle at the bottom of video and
    add image/text watermark at the top right corner of video and
    add text at the top and bottom and
    add colored padding at top and bottom of video in the same command

    This following is the command I can get somewhat working. This is adding padding at the bottom but not at the top. It is successfully embedding subtitles in the video though.
    It is also disturbing some parts of the video, pushing them to the top and cropping the top of video (because of padding at the bottom I think) but some parts of the video are in place and are ok.

    I tried to write the command and use filter complex in FFMPEG but i am not sure how to use them correctly. Can somebody guide how to fix this and use filter complex correctly as documentation is too complex

    COMMAND

    ffmpeg -y -i video-orignal.mp4 -i watermark.jpg -filter_complex "[0:v]pad=iw:ih+300:0:0:purple[padded]; [padded]overlay=main_w-overlay_w-5:5[watermarked]; [0:v][watermarked]overlay=W-w-10:H-h-10,subtitles=subtitles-final.ass[out]" -map "[out]" -map 0:a video-final.mp4

  • FFMPEG concat causing audio glitches in segments boundaries

    28 mai 2017, par Idan

    I am segmenting a video file to 10sec segments, transcoding each of them and then run a concat to merge them all back together.
    While the whole process works without errors and the final file is valid and playable, I’ve noticed some sort of glitches/interruptions in the audio stream when passing over the original segments boundaries.

    For example, in a 60sec video that was segmented to 10sec segments and stitched back again, the final output will show audio interruptions in 10/20/30/40/50 sec timestamps.

    For segmenting the files I use :

    ffmpeg -y -i $INPUT_FILE -c copy -flags -global_header -segment_time 10 -break_non_keyframes 0 -reset_timestamps 1 -segment_list file_segs.list -segment_list_type ffconcat -write_empty_segments 0 -segment_format mp4  -f segment file_seg-%d.mp4

    And for concat I use :

    ffmpeg -y -f concat -i file_segs.list -c copy -movflags +faststart file_video.mp4

    Transcoding is to libx264 / aac

    What might be the cause ? Is there any way to work around this problem ?

  • FFMPEG concat causing audio glitches in segments boundaries

    28 mai 2017, par Idan

    I am segmenting a video file to 10sec segments, transcoding each of them and then run a concat to merge them all back together.
    While the whole process works without errors and the final file is valid and playable, I’ve noticed some sort of glitches/interruptions in the audio stream when passing over the original segments boundaries.

    For example, in a 60sec video that was segmented to 10sec segments and stitched back again, the final output will show audio interruptions in 10/20/30/40/50 sec timestamps.

    For segmenting the files I use :

    ffmpeg -y -i $INPUT_FILE -c copy -flags -global_header -segment_time 10 -break_non_keyframes 0 -reset_timestamps 1 -segment_list file_segs.list -segment_list_type ffconcat -write_empty_segments 0 -segment_format mp4  -f segment file_seg-%d.mp4

    And for concat I use :

    ffmpeg -y -f concat -i file_segs.list -c copy -movflags +faststart file_video.mp4

    Transcoding is to libx264 / aac

    What might be the cause ? Is there any way to work around this problem ?

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