Recherche avancée

Médias (1)

Mot : - Tags -/artwork

Autres articles (71)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

  • Possibilité de déploiement en ferme

    12 avril 2011, par

    MediaSPIP peut être installé comme une ferme, avec un seul "noyau" hébergé sur un serveur dédié et utilisé par une multitude de sites différents.
    Cela permet, par exemple : de pouvoir partager les frais de mise en œuvre entre plusieurs projets / individus ; de pouvoir déployer rapidement une multitude de sites uniques ; d’éviter d’avoir à mettre l’ensemble des créations dans un fourre-tout numérique comme c’est le cas pour les grandes plate-formes tout public disséminées sur le (...)

Sur d’autres sites (5991)

  • Can't split 24bit flac files on the command line [closed]

    21 mars 2023, par Martin

    I am trying to export a 24bit flac file in my ubuntu terminal. I've tried two different methods, but neither work.

    


    Method 1 : shntool

    


    when I run this command :
shntool split -f times.cue -O always -o lowq_full_silence.flac

    


    where lowq_full_silence.flac was rendered in audacity as a flac file with level=0 and bit depth=16 bit, my command works.

    


    but if i run this command :

    


    shntool split -f times.cue -O always -o full_hq.flac

    


    where full_hq.flac has level=8 and bit depth=24 bit
The command fails :

    


    shntool [split]: warning: unsupported format 0xfffe (Unknown) while processing file: [full_hq.flac]
shntool [split]: error: cannot continue due to error(s) shown above


    


    https://bugs.launchpad.net/ubuntu/+source/shntool/+bug/2000794

    


    Method 2 : ffmpeg

    


    Trying to split the flac file with comma separated 'split points' input

    


    ffmpeg -i "full_hq.flac" -c copy -map 0 -f segment -segment_times "22,441,556,559" "%d_output.flac"

    


    But the output from this ffmpeg command has broken length metadata :

    


    https://trac.ffmpeg.org/ticket/4905

    


    Is there a better way to split a high quality 24bit flac file into individual segments, where each exported segment file has correct length metadata ?

    


    Files :
https://file.io/lvGTUEgQArb7

    


  • FFmpeg : av_interleaved_write_frame doesn't detect failure for TLS output

    15 mars 2017, par DanielB6

    How can I detect failure from av_interleaved_write_frame/av_write_frame when the output uses TLS and the connection fails ? Both functions continue to return 0 after the destination becomes unavailable. When TLS isn’t used, the functions detect the failure immediately and return -ve return codes.

    TLS output :

    av_interleaved_write_frame st.tb=90000, result=0

    Non-TLS output :

    av_interleaved_write_frame failed result=-32 - Broken pipe

    This behaviour can also be demonstrated using the command-line tool.

    Expected Result for plain connection - Connection failure terminates program :

    $ ffmpeg -rtsp_transport tcp -i rtsp://:554... -vcodec copy -an -f rtsp "rtsp://:1935..."
    
ffmpeg version N-68044-g9f9440b Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Nov 27 2014 03:13:44 with gcc 4.9.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.100 / 56. 15.100
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, rtsp, from 'rtsp://:554...':
    
  Metadata:
    
    title           : Media Presentation
    
    comment         : <comment>
    
  Duration: N/A, start: 0.011000, bitrate: N/A
    
    Stream #0:0: Video: h264 (High), yuv420p, 1920x1080, 30 tbr, 90k tbn, 180k tbc
    
    Stream #0:1: Data: none
    
Output #0, rtsp, to 'rtsp://:1935...':
    
  Metadata:
    
    title           : Media Presentation
    
    comment         : <comment>
    
    encoder         : Lavf56.15.100
    
    Stream #0:0: Video: h264, yuv420p, 1920x1080, q=2-31, 90k tbn, 90k tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
Press [q] to stop, [?] for help
    
[rtsp @ 0000000004d4e940] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
    
av_interleaved_write_frame(): Broken pipe00:00:15.71 bitrate=N/A
    
frame=  476 fps= 33 q=-1.0 Lsize=N/A time=00:00:15.77 bitrate=N/A
    
video:2178kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Conversion failed!
    
$
    
</comment></comment>

    Unexpected result for TLS connection - Program continues to run, although it knows something is wrong :

    $ ffmpeg -rtsp_transport tcp -i rtsp://:554... -vcodec copy -an -f rtsp "rtsps://:443..."
    
ffmpeg version N-68044-g9f9440b Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Nov 27 2014 03:13:44 with gcc 4.9.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.100 / 56. 15.100
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, rtsp, from 'rtsp://:554...':
    
  Metadata:
    
    title           : Media Presentation
    
    comment         : <comment>
    
  Duration: N/A, start: 0.025000, bitrate: N/A
    
    Stream #0:0: Video: h264 (High), yuv420p, 1920x1080, 30 tbr, 90k tbn, 180k tbc
    
    Stream #0:1: Data: none
    
Output #0, rtsp, to 'rtsps://:443...':
    
  Metadata:
    
    title           : Media Presentation
    
    comment         : <comment>
    
    encoder         : Lavf56.15.100
    
    Stream #0:0: Video: h264, yuv420p, 1920x1080, q=2-31, 90k tbn, 90k tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
Press [q] to stop, [?] for help
    
[rtsp @ 0000000002d5aa20] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
    
[tls @ 00000000056adc00] Error in the push function. bitrate=N/A
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 2 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 31 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 89 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 30 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 92 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 29 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 90 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 29 times
    
[tls @ 00000000056adc00] The specified session has been invalidated for some reason.
    
    Last message repeated 92 times
    
...
    
</comment></comment>

    I need to be able to detect the failure in av_interleaved_write_frame so that I can re-initiate the connection.

  • Remove portion of some frames from a video

    21 janvier 2020, par FlafyMation

    Here is what I’m trying to do :
    Imagine a video with 10 frames (0 = 1 frame)

    0 0 0 0 0 0 0 0 0 0

    with some frames selected(1 = 1 selected frame)

    0 1 1 1 0 0 0 0 0 0

    and the end results should be this(all selected frames got removed from the video)

    0 0 0 0 0 0 0

    this is what I’m trying to do in python(with frames not times). Does anybody knows how I can do that ?

Navigation