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  • Mediabox : ouvrir les images dans l’espace maximal pour l’utilisateur

    8 février 2011, par

    La visualisation des images est restreinte par la largeur accordée par le design du site (dépendant du thème utilisé). Elles sont donc visibles sous un format réduit. Afin de profiter de l’ensemble de la place disponible sur l’écran de l’utilisateur, il est possible d’ajouter une fonctionnalité d’affichage de l’image dans une boite multimedia apparaissant au dessus du reste du contenu.
    Pour ce faire il est nécessaire d’installer le plugin "Mediabox".
    Configuration de la boite multimédia
    Dès (...)

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (2317)

  • FFMpeg concatenation with large list of inputs — how to minimize command line length

    27 août 2020, par huitlacoche

    I have a python tool that concatentates several mp4s together into a single movie file using FFMPEG run from a subprocess call. The issue is that an arbitrarily large number of inputs in the command string will hit the windows CLI character max.

    


    ffmpeg -y -i a.mp4 -i b.mp4 -i c.mp4 -f lavfi -t 0.1 -i anullsrc  -filter_complex '[0]scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2: (oh- ih)/2,setsar=1[0:v];[1]scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(owiw)/2:(oh-ih)/2,setsar=1[1:v];[2]scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow- iw)/2:(oh-ih)/2,setsar=1[2:v]; [0:v][3:a][1:v][3:a][2:v][3:a]concat=n=3:v=1:a=1[v][a]' -c:v libx264 -map [v] -map [a] output.mp4

    


    Assuming 3 input movies that may or may have audio (hence the null audio source).
This works fine assuming there are no more than 30-50 input files. Often the input files have rather long filepaths and can get long very quickly.

    


    After doing a bit of reading I tried a simple :

    


    ffmpeg -f concat -i files.txt -c copy output.mp4

    


    Which works if I can guarantee that all the files are the same codec/resolution/etc, but this cannot be guaranteed.
I'm not clear on how to translate my filter_complex to work with a text file of inputs. Finding a specific enough solution has proven elusive.

    


    I'd be perfectly fine assigning the input paths to a temporary environment variable but in my use case this doesn't seem to work either. The subprocess call doesn't seem to translate wildcard %MYVAR% calls to environment variables.

    


    I feel like there has to be an answer to this problem. If anyone can suggest a solution I would greatly appreciate it.

    


    Thanks !

    


  • FFMPEG creates incorrect Source duration

    13 septembre 2020, par Byron Whitlock

    When transcoding movies from an AVI to mp4 sometimes FFMPEG sets the "Source Duration" incorrectly.

    



    This messes up playback on IOS devices. Specifically, it causes the video to cut out at "Source duration" while the audio still plays.

    



    enter image description here

    



    FFMPEG output transcode doesn't' show anything odd at all. Looks normal, no errors or warnings.

    



      

    • Can I force FFMPEG to never add the "Source Duration" metadata ?

      • 


    • How do I edit the track metadata shown by mediainfo ? I tried Mp4box, and a few others, but I can't seem to figure out how to edit track level metadata.

      • 


    



    Thanks.

    



    Log is below.

    



    ffmpeg version N-77455-g4707497 Copyright (c) 2000-2015 the FFmpeg developers   built with gcc 5.2.0 (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-libdcadec --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-libzimg --enable-lzma --enable-decklink --enable-zlib   libavutil      55. 11.100 / 55. 11.100   libavcodec     57. 20.100 / 57. 20.100   libavformat    57. 20.100 / 57. 20.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6. 21.101 / 
    6. 21.101   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.101 /  2.  0.101   libpostproc    54.  0.100 / 54.  0.100 Input #0, avi, from 'E:\MEDIA\Central.Intelligence.2016.HC.HDRip.XviD.AC3-EVO\Central.Intelligence.2016.HC.HDRip.XviD.AC3-EVO.avi': Metadata:
        encoder         : VirtualDubMod 1.5.10.2 (build 2542/release)   Duration: 01:51:43.27, start: 0.000000, bitrate: 1765 kb/s
        Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 1563 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
        Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 192 kb/s [libx264 @ 000000f3c80a0a80] using SAR=405/304 [libx264 @ 000000f3c80a0a80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2 [libx264 @ 000000f3c80a0a80] profile High, level 3.1 [libx264 @ 000000f3c80a0a80] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=23 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=1280 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'F:\STREAMS\Central.Intelligence.2016.HC.HDRip.XviD.AC3-EVO.avi.1280x720_1000kbps.TEMP.mp4': Metadata:
        encoder         : Lavf57.20.100
        Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 405:304 DAR 45:19], q=-1--1, 1280 kb/s, 23.98 fps, 10000k tbn, 23.98 tbc
        Metadata:
          encoder         : Lavc57.20.100 libx264
        Side data:
          unknown side data type 10 (24 bytes)
        Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 160 kb/s
        Metadata:
          encoder         : Lavc57.20.100 aac Stream mapping:   Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))   Stream #0:1 -> #0:1 (ac3 (native) -> aac (native)) Press [q] to stop, [?] for help [mpeg4 @ 000000f3c80ae220] Video uses a non-standard and wasteful way to store B-frames ('packed B-frames'). Consider using the mpeg4_unpack_bframes bitstream filter without encoding but stream copy to fix it. 
frame=   15 fps=0.0 q=0.0 size=       0kB time=00:00:01.18 bitrate=   0.3kbits/s dup=1 drop=0 speed=2.36x   
--SNIP---
frame=160704 fps= 16 q=30.0 size= 1180376kB time=01:51:43.08 bitrate=1442.6kbits/s dup=1 drop=0 speed=0.671x     
[libx264 @ 0000001f60c5d900] frame I:1167  Avg QP:19.08  size: 44465
[libx264 @ 0000001f60c5d900] frame P:63049 Avg QP:22.26  size: 12774
[libx264 @ 0000001f60c5d900] frame B:110691 Avg QP:24.81  size:  2739
[libx264 @ 0000001f60c5d900] consecutive B-frames:  6.0% 22.8% 18.3% 53.0%
[libx264 @ 0000001f60c5d900] mb I  I16..4: 14.0% 76.1%  9.9%
[libx264 @ 0000001f60c5d900] mb P  I16..4:  2.5%  6.6%  0.4%  P16..4: 44.5% 10.8%  5.2%  0.0%  0.0%    skip:30.0%
[libx264 @ 0000001f60c5d900] mb B  I16..4:  0.1%  0.3%  0.0%  B16..8: 32.1%  1.6%  0.2%  direct: 0.9%  skip:64.9%  L0:37.9% L1:58.7% BI: 3.5%
[libx264 @ 0000001f60c5d900] final ratefactor: 23.25
[libx264 @ 0000001f60c5d900] 8x8 transform intra:70.8% inter:85.8%
[libx264 @ 0000001f60c5d900] coded y,uvDC,uvAC intra: 47.1% 56.6% 19.5% inter: 10.7% 14.2% 0.4%
[libx264 @ 0000001f60c5d900] i16 v,h,dc,p: 46% 20%  8% 26%
[libx264 @ 0000001f60c5d900] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 17% 25%  5%  7%  7%  7%  6%  6%
[libx264 @ 0000001f60c5d900] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 20% 12%  5% 10%  9%  8%  5%  4%
[libx264 @ 0000001f60c5d900] i8c dc,h,v,p: 58% 18% 18%  6%
[libx264 @ 0000001f60c5d900] Weighted P-Frames: Y:1.4% UV:0.8%
[libx264 @ 0000001f60c5d900] ref P L0: 62.6% 12.9% 18.9%  5.6%  0.1%
[libx264 @ 0000001f60c5d900] ref B L0: 87.6% 11.0%  1.4%
[libx264 @ 0000001f60c5d900] ref B L1: 94.6%  5.4%
[libx264 @ 0000001f60c5d900] kb/s:1272.59
[aac @ 0000001f60b52180] Qavg: 954.859


    



    Edit

    



    This has something to do with data, when I run this command (cut at 10 minutes)

    



    ffmpeg.exe -i CI.mp4 -ss 00:00:00 -t 00:08:00 -vcodec copy  -map_metadata 0 -acodec copy CI2.mp4


    



    Mediainfo shows

    



    Duration                    : 9mn 49s
Source duration             : 2mn 40s


    



    When I run this one (18 minutes)

    



    ffmpeg.exe -i CI.mp4 -ss 00:00:00 -t 00:18:00 -vcodec copy  -map_metadata 0 -acodec copy CI2.mp4


    



    Mediainfo shows

    



    Duration                    : 17mn 49s
Source duration             : 3mn 30s


    



    How can I edit the metadata directly

    


  • FFMPEG creates incorrect Source duration

    13 septembre 2020, par Byron Whitlock

    When transcoding movies from an AVI to mp4 sometimes FFMPEG sets the "Source Duration" incorrectly.

    



    This messes up playback on IOS devices. Specifically, it causes the video to cut out at "Source duration" while the audio still plays.

    



    enter image description here

    



    FFMPEG output transcode doesn't' show anything odd at all. Looks normal, no errors or warnings.

    



      

    • Can I force FFMPEG to never add the "Source Duration" metadata ?

      • 


    • How do I edit the track metadata shown by mediainfo ? I tried Mp4box, and a few others, but I can't seem to figure out how to edit track level metadata.

      • 


    



    Thanks.

    



    Log is below.

    



    ffmpeg version N-77455-g4707497 Copyright (c) 2000-2015 the FFmpeg developers   built with gcc 5.2.0 (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-libdcadec --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-libzimg --enable-lzma --enable-decklink --enable-zlib   libavutil      55. 11.100 / 55. 11.100   libavcodec     57. 20.100 / 57. 20.100   libavformat    57. 20.100 / 57. 20.100   libavdevice    57.  0.100 / 57.  0.100   libavfilter     6. 21.101 / 
    6. 21.101   libswscale      4.  0.100 /  4.  0.100   libswresample   2.  0.101 /  2.  0.101   libpostproc    54.  0.100 / 54.  0.100 Input #0, avi, from 'E:\MEDIA\Central.Intelligence.2016.HC.HDRip.XviD.AC3-EVO\Central.Intelligence.2016.HC.HDRip.XviD.AC3-EVO.avi': Metadata:
        encoder         : VirtualDubMod 1.5.10.2 (build 2542/release)   Duration: 01:51:43.27, start: 0.000000, bitrate: 1765 kb/s
        Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 1563 kb/s, 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
        Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 192 kb/s [libx264 @ 000000f3c80a0a80] using SAR=405/304 [libx264 @ 000000f3c80a0a80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2 [libx264 @ 000000f3c80a0a80] profile High, level 3.1 [libx264 @ 000000f3c80a0a80] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=23 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=1280 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'F:\STREAMS\Central.Intelligence.2016.HC.HDRip.XviD.AC3-EVO.avi.1280x720_1000kbps.TEMP.mp4': Metadata:
        encoder         : Lavf57.20.100
        Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 405:304 DAR 45:19], q=-1--1, 1280 kb/s, 23.98 fps, 10000k tbn, 23.98 tbc
        Metadata:
          encoder         : Lavc57.20.100 libx264
        Side data:
          unknown side data type 10 (24 bytes)
        Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 160 kb/s
        Metadata:
          encoder         : Lavc57.20.100 aac Stream mapping:   Stream #0:0 -> #0:0 (mpeg4 (native) -> h264 (libx264))   Stream #0:1 -> #0:1 (ac3 (native) -> aac (native)) Press [q] to stop, [?] for help [mpeg4 @ 000000f3c80ae220] Video uses a non-standard and wasteful way to store B-frames ('packed B-frames'). Consider using the mpeg4_unpack_bframes bitstream filter without encoding but stream copy to fix it. 
frame=   15 fps=0.0 q=0.0 size=       0kB time=00:00:01.18 bitrate=   0.3kbits/s dup=1 drop=0 speed=2.36x   
--SNIP---
frame=160704 fps= 16 q=30.0 size= 1180376kB time=01:51:43.08 bitrate=1442.6kbits/s dup=1 drop=0 speed=0.671x     
[libx264 @ 0000001f60c5d900] frame I:1167  Avg QP:19.08  size: 44465
[libx264 @ 0000001f60c5d900] frame P:63049 Avg QP:22.26  size: 12774
[libx264 @ 0000001f60c5d900] frame B:110691 Avg QP:24.81  size:  2739
[libx264 @ 0000001f60c5d900] consecutive B-frames:  6.0% 22.8% 18.3% 53.0%
[libx264 @ 0000001f60c5d900] mb I  I16..4: 14.0% 76.1%  9.9%
[libx264 @ 0000001f60c5d900] mb P  I16..4:  2.5%  6.6%  0.4%  P16..4: 44.5% 10.8%  5.2%  0.0%  0.0%    skip:30.0%
[libx264 @ 0000001f60c5d900] mb B  I16..4:  0.1%  0.3%  0.0%  B16..8: 32.1%  1.6%  0.2%  direct: 0.9%  skip:64.9%  L0:37.9% L1:58.7% BI: 3.5%
[libx264 @ 0000001f60c5d900] final ratefactor: 23.25
[libx264 @ 0000001f60c5d900] 8x8 transform intra:70.8% inter:85.8%
[libx264 @ 0000001f60c5d900] coded y,uvDC,uvAC intra: 47.1% 56.6% 19.5% inter: 10.7% 14.2% 0.4%
[libx264 @ 0000001f60c5d900] i16 v,h,dc,p: 46% 20%  8% 26%
[libx264 @ 0000001f60c5d900] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 17% 25%  5%  7%  7%  7%  6%  6%
[libx264 @ 0000001f60c5d900] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 20% 12%  5% 10%  9%  8%  5%  4%
[libx264 @ 0000001f60c5d900] i8c dc,h,v,p: 58% 18% 18%  6%
[libx264 @ 0000001f60c5d900] Weighted P-Frames: Y:1.4% UV:0.8%
[libx264 @ 0000001f60c5d900] ref P L0: 62.6% 12.9% 18.9%  5.6%  0.1%
[libx264 @ 0000001f60c5d900] ref B L0: 87.6% 11.0%  1.4%
[libx264 @ 0000001f60c5d900] ref B L1: 94.6%  5.4%
[libx264 @ 0000001f60c5d900] kb/s:1272.59
[aac @ 0000001f60b52180] Qavg: 954.859


    



    Edit

    



    This has something to do with data, when I run this command (cut at 10 minutes)

    



    ffmpeg.exe -i CI.mp4 -ss 00:00:00 -t 00:08:00 -vcodec copy  -map_metadata 0 -acodec copy CI2.mp4


    



    Mediainfo shows

    



    Duration                    : 9mn 49s
Source duration             : 2mn 40s


    



    When I run this one (18 minutes)

    



    ffmpeg.exe -i CI.mp4 -ss 00:00:00 -t 00:18:00 -vcodec copy  -map_metadata 0 -acodec copy CI2.mp4


    



    Mediainfo shows

    



    Duration                    : 17mn 49s
Source duration             : 3mn 30s


    



    How can I edit the metadata directly

    


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