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Autres articles (48)

  • Configurer la prise en compte des langues

    15 novembre 2010, par

    Accéder à la configuration et ajouter des langues prises en compte
    Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
    De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
    Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

Sur d’autres sites (4581)

  • ffmpeg drops time delay on last frame of animated GIF

    13 août 2014, par Austin

    I am trying to convert animated GIFs to MP4 files using ffmpeg and x264. However, I seem be suffering from the effects of this bug in ffmpeg that causes the delay time of the last frame of the GIF to be ignored. For very short GIFs, this is quite a problem.

    As a work around, I was thinking that I should be able to manually tell ffmpeg to freeze on the last frame for a certain amount of time, specifically the proper duration of that frame (which I can extract from the GIF). However, I can’t seem to find a good way to do this. Any suggestions ? I would really like to be able to do this without having to split to the GIF into frames before putting it into ffmpeg since that will mess up GIFs with a non-constant framerate (in addition to being much slower).

    I am using ffmpeg version 2.3, though I have also tried this with the latest git code without any improvement. The full ffmpeg commands I’m using look like this :

    ffmpeg -i animation.gif -vf "scale=trunc(in_w/2)*2:trunc(in_h/2)*2" -c:v libx264 -b:v 2000k -y -pix_fmt yuv420p -f mp4 animation.mp4

    Here is some console output :

    ffmpeg version 2.3 Copyright (c) 2000-2014 the FFmpeg developers
     built on Aug 11 2014 21:19:46 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
     configuration: --enable-gpl --enable-libass --enable-libfreetype --enable-libtheora --enable-libvorbis --enable-libx264
     libavutil      52. 92.100 / 52. 92.100
     libavcodec     55. 69.100 / 55. 69.100
     libavformat    55. 48.100 / 55. 48.100
     libavdevice    55. 13.102 / 55. 13.102
     libavfilter     4. 11.100 /  4. 11.100
     libswscale      2.  6.100 /  2.  6.100
     libswresample   0. 19.100 /  0. 19.100
     libpostproc    52.  3.100 / 52.  3.100
    Input #0, gif, from 'animation.gif':
     Duration: N/A, bitrate: N/A
       Stream #0:0: Video: gif, bgra, 500x375, 100 tbr, 100 tbn, 100 tbc
    [libx264 @ 0x239ea00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x239ea00] profile High, level 3.1
    [libx264 @ 0x239ea00] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    Output #0, mp4, to 'animation.mp4':
     Metadata:
       encoder         : Lavf55.48.100
       Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 500x374, q=-1--1, 2000 kb/s, 100 fps, 12800 tbn, 100 tbc
       Metadata:
         encoder         : Lavc55.69.100 libx264
    Stream mapping:
     Stream #0:0 -> #0:0 (gif (native) -> h264 (libx264))
    Press [q] to stop, [?] for help
    frame=    7 fps=0.0 q=-1.0 Lsize=       7kB time=00:00:00.05 bitrate=1222.1kbits/s dup=5 drop=0    
    video:7kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13.542441%
    [libx264 @ 0x239ea00] frame I:1     Avg QP:34.86  size:  3657
    [libx264 @ 0x239ea00] frame P:3     Avg QP:30.86  size:   744
    [libx264 @ 0x239ea00] frame B:3     Avg QP:33.33  size:    49
    [libx264 @ 0x239ea00] consecutive B-frames: 42.9%  0.0%  0.0% 57.1%
    [libx264 @ 0x239ea00] mb I  I16..4: 10.2% 78.3% 11.6%
    [libx264 @ 0x239ea00] mb P  I16..4:  1.2%  5.0%  0.8%  P16..4: 11.7%  3.3%  1.2%  0.0%  0.0%    skip:76.8%
    [libx264 @ 0x239ea00] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8:  3.7%  0.0%  0.0%  direct: 0.0%  skip:96.2%  L0:23.5% L1:76.5% BI: 0.0%
    [libx264 @ 0x239ea00] final ratefactor: 20.31
    [libx264 @ 0x239ea00] 8x8 transform intra:77.0% inter:79.4%
    [libx264 @ 0x239ea00] coded y,uvDC,uvAC intra: 39.5% 0.0% 0.0% inter: 2.7% 0.0% 0.0%
    [libx264 @ 0x239ea00] i16 v,h,dc,p: 38% 27%  7% 28%
    [libx264 @ 0x239ea00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 12% 13%  7%  6% 10%  4%  8%  5%
    [libx264 @ 0x239ea00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38% 11% 14%  5%  8% 10%  5%  7%  2%
    [libx264 @ 0x239ea00] i8c dc,h,v,p: 100%  0%  0%  0%
    [libx264 @ 0x239ea00] Weighted P-Frames: Y:0.0% UV:0.0%
    [libx264 @ 0x239ea00] ref P L0: 99.1%  0.7%  0.3%
    [libx264 @ 0x239ea00] ref B L0: 85.0% 15.0%
    [libx264 @ 0x239ea00] ref B L1: 95.4%  4.6%
    [libx264 @ 0x239ea00] kb/s:689.83
  • FFmpeg | subtitles with ass format

    26 octobre 2018, par Praveen Tamil

    I would like to generate subtitles with dynamic font

    [Script Info]
    ScriptType: v4.00+
    PlayResX: 1280
    PlayResY: 720
    Title: WoFox

    [V4+ Styles]
    Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
    Style: Default,Arial,30,&Hffffff,&Hffffff,&H0000FF,&H0000FF,0,0,0,0,100,100,5,0,3,1,0,3,10,10,10,1
    Style: Default1,/home/nodeuser8/tmp/CharmonmanRegular.ttf,40,&Hffffff,&Hffffff,&H0000FF,&H0000FF,0,0,0,0,100,100,5,0,3,1,0,3,10,10,10,1

    [Events]
    Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
    Dialogue: 0,00:00:00.0,00:00:03.0,Default,,0,0,0,,My first subtitle! Click this text to edit
    Dialogue: 0,00:00:00.0,00:00:03.0,Default1,,0,0,0,,This box shows the amount of text that fits into one caption. As you change the style of the captions, you can preview how

    And my ffmpeg code is

    ffmpeg -i ./tmp/source.mp4 -t 5 -filter_complex "ass=filename=./tmp/subtitles.ass" ./t mp/output.mp4 -y

    But I didn’t get out expected output.

    The Console is

    [Parsed_ass_0 @ 0x58680c0] Shaper: FriBidi 1.0.5 (SIMPLE)
    [Parsed_ass_0 @ 0x58680c0] Using font provider fontconfig
    [Parsed_ass_0 @ 0x58680c0] Added subtitle file: './tmp/subtitles.ass' (3 styles, 2 events)
    Stream mapping:
     Stream #0:0 (h264) -> ass (graph 0)
     ass (graph 0) -> Stream #0:0 (libx264)
     Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    Press [q] to stop, [?] for help
    [Parsed_ass_0 @ 0x5cd4180] Shaper: FriBidi 1.0.5 (SIMPLE)
    [Parsed_ass_0 @ 0x5cd4180] Using font provider fontconfig
    [Parsed_ass_0 @ 0x5cd4180] Added subtitle file: './tmp/subtitles.ass' (3  styles, 2 events)
    [Parsed_ass_0 @ 0x5cd4180] fontselect: (Arial, 400, 0) -> /usr/share/fonts/liberation/LiberationSans-Regular.ttf, 0, LiberationSans
    [Parsed_ass_0 @ 0x5cd4180] fontselect: (/home/nodeuser8/tmp/CharmonmanRegular.ttf, 400, 0) -> /usr/share/fonts/dejavu/DejaVuSans.ttf, 0, DejaVuSans
    [libx264 @ 0x5869880] using SAR=1/1
    [libx264 @ 0x5869880] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x5869880] profile High, level 3.1, 4:2:0, 8-bit
    [libx264 @ 0x5869880] 264 - core 157 r2935 545de2f - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    Output #0, mp4, to './tmp/output.mp4':

    Here I’m trying to load font from /home/nodeuser8/tmp/CharmonmanRegular.ttf but ffmpeg load font from /usr/share/fonts/dejavu/DejaVuSans.ttf.

    So how to load fontfile for ass subtitles ?

  • How to include audio in an overlay ffmpeg command ?

    27 avril 2021, par gilad s

    Using ffmpeg I add a video overlay successfully over an origin video (origin has audio, overlay doesn't). However the audio of the origin video doesn't appear in the result video.

    


      ffmpeg  -i source.mp4 -i overlay.mp4 -filter_complex "[0:v]setpts=PTS-STARTPTS, scale=1280x720[top]; 
  [1:v]setpts=PTS-STARTPTS, scale=1280x720, format=yuva420p, 
  colorchannelmixer=aa=0.2[bottom]; [top][bottom]overlay=shortest=1" 
  -shortest -acodec copy -vcodec libx264 result1.mp4


    


    Even if I execute the following separate command on the result of the previous command - still no audio appears in the new result video.

    


      ffmpeg -i result1.mp4 -i audio.mp3 -c:v copy -c:a aac result2.mp4


    


    Here is the log :

    


    ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'course/final_video/3008_01_01_01_audio.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:06:01.48, start: 0.000000, bitrate: 215 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 141 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 70 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'images/overlay.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:24:00.38, start: 0.000000, bitrate: 575 kb/s
  Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 442 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 11/22/2020.
      vendor_id       : [0][0][0][0]
  Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 11/22/2020.
      vendor_id       : [0][0][0][0]
Stream mapping:
  Stream #0:0 (h264) -> setpts
  Stream #1:0 (h264) -> setpts
  overlay -> Stream #0:0 (libx264)
  Stream #1:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[swscaler @ 0x10c590000] No accelerated colorspace conversion found from yuva420p to argb.
[libx264 @ 0x7fc532813200] using SAR=1/1
[libx264 @ 0x7fc532813200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fc532813200] profile High, level 3.1, 4:2:0, 8-bit
[libx264 @ 0x7fc532813200] 264 - core 161 r3049 55d517b - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'course/final_video/3008_01_01_01_overlay.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 12800 tbn (default)
    Metadata:
      encoder         : Lavc58.134.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 11/22/2020.
      vendor_id       : [0][0][0][0]

Stream mapping:
  Stream #0:0 (h264) -> setpts
  Stream #1:0 (h264) -> setpts
  overlay -> Stream #0:0 (libx264)
  Stream #1:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[swscaler @ 0x10c590000] No accelerated colorspace conversion found from yuva420p to argb.
[libx264 @ 0x7fc532813200] using SAR=1/1
[libx264 @ 0x7fc532813200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fc532813200] profile High, level 3.1, 4:2:0, 8-bit
[libx264 @ 0x7fc532813200] 264 - core 161 r3049 55d517b - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'course/final_video/3008_01_01_01_overlay.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 12800 tbn (default)
    Metadata:
      encoder         : Lavc58.134.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 11/22/2020.
      vendor_id       : [0][0][0][0]
frame= 9037 fps= 32 q=-1.0 Lsize=   20954kB time=00:06:01.62 bitrate= 474.7kbits/s speed=1.26x    
video:15006kB audio:5651kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.439596%
[libx264 @ 0x7fc532813200] frame I:37    Avg QP:14.51  size:123799
[libx264 @ 0x7fc532813200] frame P:2277  Avg QP:16.97  size:  3221
[libx264 @ 0x7fc532813200] frame B:6723  Avg QP:24.31  size:   513
[libx264 @ 0x7fc532813200] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
[libx264 @ 0x7fc532813200] mb I  I16..4:  8.3% 64.9% 26.9%
[libx264 @ 0x7fc532813200] mb P  I16..4:  0.5%  1.1%  0.2%  P16..4: 16.1%  3.1%  2.3%  0.0%  0.0%    skip:76.7%
[libx264 @ 0x7fc532813200] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 10.5%  0.1%  0.0%  direct: 0.2%  skip:89.2%  L0:45.2% L1:54.7% BI: 0.1%
[libx264 @ 0x7fc532813200] 8x8 transform intra:63.6% inter:83.0%
[libx264 @ 0x7fc532813200] coded y,uvDC,uvAC intra: 56.4% 61.0% 42.7% inter: 1.9% 1.9% 0.0%
[libx264 @ 0x7fc532813200] i16 v,h,dc,p: 29% 18% 18% 35%
[libx264 @ 0x7fc532813200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 19% 31%  4%  4%  4%  4%  5%  5%
[libx264 @ 0x7fc532813200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 22% 15%  4%  5%  6%  5%  5%  5%
[libx264 @ 0x7fc532813200] i8c dc,h,v,p: 51% 29% 14%  6%
[libx264 @ 0x7fc532813200] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fc532813200] ref P L0: 66.0%  6.9% 17.0% 10.1%
[libx264 @ 0x7fc532813200] ref B L0: 77.2% 20.6%  2.2%
[libx264 @ 0x7fc532813200] ref B L1: 90.2%  9.8%
[libx264 @ 0x7fc532813200] kb/s:340.06