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Autres articles (74)

  • Récupération d’informations sur le site maître à l’installation d’une instance

    26 novembre 2010, par

    Utilité
    Sur le site principal, une instance de mutualisation est définie par plusieurs choses : Les données dans la table spip_mutus ; Son logo ; Son auteur principal (id_admin dans la table spip_mutus correspondant à un id_auteur de la table spip_auteurs)qui sera le seul à pouvoir créer définitivement l’instance de mutualisation ;
    Il peut donc être tout à fait judicieux de vouloir récupérer certaines de ces informations afin de compléter l’installation d’une instance pour, par exemple : récupérer le (...)

  • 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

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (3803)

  • ffmpeg render file with transparent background

    16 novembre 2022, par Валентин Никин

    I have the next scheme of tracks. I need to render that tracks to one track with ffmpeg.

    


    enter image description here

    


    After rendering it's should looks like

    


    enter image description here

    


    I want to use the next scheme :

    


      

    1. Rendering Track 001 to file.

      2. 


    2. Rendering Track 002 to file.

      3. 


    3. Overlay Track 002 on Track 001.

      4. 


    


    For the "Track 001" I can "concat" clips to one track without any problem.

    


    But the question is how I should concat clips for the "Track 002" ? The "Empty" places must be transparent for the overlaying on the 3 step.

    


    I already tried to use for the Empty places input with transparent color. But on the overlaying step transparent doesn't work.

    


    ffmpeg -f lavfi -i color=c=red@0.0:s=1920x1080:r=25:d=1 \
    -i Clip004.mp4 \
    -i Rendered_track_001.mp4 \
    -filter_complex "[0:v] [1:v] xfade=transition=fade:duration=2:offset=0.5[trak]; \
                    [2:v][trak]overlay[out]" \
     -map "[out]" -c:v vp9 -c:a copy test.webm


    


    I also tried to use alphaextract and alphamerge like this

    


    ffmpeg -f lavfi -i color=c=red@0.0:s=1920x1080:r=25:d=1 \
    -i Clip004.mp4 \
    -i Rendered_track_001.mp4 \
    -filter_complex "[0:v] [1:v] xfade=transition=fade:duration=2:offset=0.5[out]; \
                    [out]alphaextract[alpha];[2:v][alpha]alphamerge[out1]" \
     -map "[out1]" -c:v vp9 -c:a copy test.webm


    


    But it's fail with error

    


    [AVFilterGraph @ 0x556557d3ce00] The following filters could not choose their formats: 
Parsed_alphaextract_1
Consider inserting the (a)format filter near their input or output.
Error reinitializing filters!
Failed to inject frame into filter network: Input/output error
Error while processing the decoded data for stream #2:0


    


    Any help would be appreciated.

    


  • avformat/matroskaenc : Cosmetics

    15 octobre 2019, par Andreas Rheinhardt
    avformat/matroskaenc : Cosmetics

    Contains renaming of variables (e.g. mkv_write_cues() contained
    
variables called tracknum that actually contain the index of a track in
    
s->streams and not the track number (which can differ in case an
    
explicit dash track number is set)).
    

    Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
    
Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] libavformat/matroskaenc.c

  • FFMpeg mxf streamcopy strips vbi_vanc_smpte_436m stream

    29 décembre 2016, par Vince

    Hi i was using ffmpeg to copy all video/audio/data streams across to another mxf file and noticed that ancillary data streams weren’t being copied and in fact caused an error.

    ffmpeg -i "D:\Media\61003203.mxf" -map 0 -c copy "D:\Media\POC_61003203.mxf"

    I wasn’t looking for the stream to be decoded/encoded but just a stream copy.
    Any ideas ?

      libavfilter     6. 68.100 /  6. 68.100
    
  libswscale      4.  3.101 /  4.  3.101
    
  libswresample   2.  4.100 /  2.  4.100
    
  libpostproc    54.  2.100 / 54.  2.100
    
[mxf @ 00000000020f24a0] material track 68: has 3 components
    
Guessed Channel Layout for Input Stream #0.1 : mono
    
Guessed Channel Layout for Input Stream #0.2 : mono
    
Guessed Channel Layout for Input Stream #0.3 : mono
    
Guessed Channel Layout for Input Stream #0.4 : mono
    
Guessed Channel Layout for Input Stream #0.5 : mono
    
Guessed Channel Layout for Input Stream #0.6 : mono
    
Guessed Channel Layout for Input Stream #0.7 : mono
    
Guessed Channel Layout for Input Stream #0.8 : mono
    
Guessed Channel Layout for Input Stream #0.9 : mono
    
Guessed Channel Layout for Input Stream #0.10 : mono
    
Guessed Channel Layout for Input Stream #0.11 : mono
    
Guessed Channel Layout for Input Stream #0.12 : mono
    
Guessed Channel Layout for Input Stream #0.13 : mono
    
Guessed Channel Layout for Input Stream #0.14 : mono
    
Guessed Channel Layout for Input Stream #0.15 : mono
    
Guessed Channel Layout for Input Stream #0.16 : mono
    
Guessed Channel Layout for Input Stream #0.17 : mono
    
Guessed Channel Layout for Input Stream #0.18 : mono
    
Guessed Channel Layout for Input Stream #0.19 : mono
    
Guessed Channel Layout for Input Stream #0.20 : mono
    
Guessed Channel Layout for Input Stream #0.21 : mono
    
Guessed Channel Layout for Input Stream #0.22 : mono
    
Guessed Channel Layout for Input Stream #0.23 : mono
    
Guessed Channel Layout for Input Stream #0.24 : mono
    
Guessed Channel Layout for Input Stream #0.25 : mono
    
Guessed Channel Layout for Input Stream #0.26 : mono
    
Guessed Channel Layout for Input Stream #0.27 : mono
    
Guessed Channel Layout for Input Stream #0.28 : mono
    
Guessed Channel Layout for Input Stream #0.29 : mono
    
Guessed Channel Layout for Input Stream #0.30 : mono
    
Guessed Channel Layout for Input Stream #0.31 : mono
    
Guessed Channel Layout for Input Stream #0.32 : mono
    
Input #0, mxf, from 'D:\Media\test\61003203.mxf':
    
  Metadata:
    
    company_name    : Grass Valley
    
    product_name    : K2
    
    product_version : 9.6.4.2374
    
    product_uid     : caf3d2ff-9425-4086-addf-66f77967f101
    
    modification_date: 2016-11-02T10:39:56.000000Z
    
    generation_uid  : 14bd7cca-9235-148c-036a-28fe20524153
    
    uid             : 14bd7d74-9235-148c-1b22-28fe20524153
    
    material_package_umid: 0x060A2B340101010501010F431300000014BD7D929235148C04D
    
028FE20524153
    
    material_package_name: Material Package for EUSNBKS005/V:/B02-Playout/610032
    
03
    
    timecode        : 17:03:58:15
    
  Duration: 00:38:59.96, start: 0.000000, bitrate: 90620 kb/s
    
    Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, top first), 1920x1080 [S
    
AR 1:1 DAR 16:9], 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Video Track #1
    
    Stream #0:1: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #1
    
    Stream #0:2: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #2
    
    Stream #0:3: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #3
    
    Stream #0:4: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #4
    
    Stream #0:5: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #5
    
    Stream #0:6: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #6
    
    Stream #0:7: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #7
    
    Stream #0:8: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #8
    
    Stream #0:9: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #9
    
    Stream #0:10: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #10
    
    Stream #0:11: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #11
    
    Stream #0:12: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #12
    
    Stream #0:13: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #13
    
    Stream #0:14: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #14
    
    Stream #0:15: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #15
    
    Stream #0:16: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #16
    
    Stream #0:17: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #17
    
    Stream #0:18: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #18
    
    Stream #0:19: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #19
    
    Stream #0:20: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #20
    
    Stream #0:21: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #21
    
    Stream #0:22: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #22
    
    Stream #0:23: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #23
    
    Stream #0:24: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #24
    
    Stream #0:25: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #25
    
    Stream #0:26: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #26
    
    Stream #0:27: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #27
    
    Stream #0:28: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #28
    
    Stream #0:29: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #29
    
    Stream #0:30: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #30
    
    Stream #0:31: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #31
    
    Stream #0:32: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Audio Track #32
    
    Stream #0:33: Data: none
    
    Metadata:
    
      file_package_umid: 0x060A2B340101010501010F431300000014BD8A269235148C7F772
    
8FE20524153
    
      file_package_name: Source Package for EUSNBKS005/V:/B02-Playout/61003203
    
      track_name      : Material Package: Data Track #1
    
      data_type       : vbi_vanc_smpte_436M
    
[mxf @ 000000000290c460] track 33: could not find essence container ul, codec no
    
t currently supported in container
    
Could not write header for output file #0 (incorrect codec parameters ?): Operat
    
ion not permitted
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
  Stream #0:2 -> #0:2 (copy)
    
  Stream #0:3 -> #0:3 (copy)
    
  Stream #0:4 -> #0:4 (copy)
    
  Stream #0:5 -> #0:5 (copy)
    
  Stream #0:6 -> #0:6 (copy)
    
  Stream #0:7 -> #0:7 (copy)
    
  Stream #0:8 -> #0:8 (copy)
    
  Stream #0:9 -> #0:9 (copy)
    
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