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  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

  • Organiser par catégorie

    17 mai 2013, par

    Dans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
    Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
    Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...)

  • 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 (...)

Sur d’autres sites (6535)

  • FFmpeg - Merge two images (.png) to video (.mp4) doesn't work

    12 juin 2019, par Jokoe

    I want to merge two images (names are not numbered in a sequence) to a video, but the result includes only a video of the first image.

    I would appreciate any kind of help !

    ffmpeg.exe -r 1/5 -i image_x.png -r 1/5 -i image_y.png -codec:v libx264 -vf fps=50 video.mp4

    Output :

    Input #0, png_pipe, from
    ’C :\Users\khj\Desktop\SpeakerLayoutTool\Images_video\iamge_x.png’ :
    Duration : N/A, bitrate : N/A
    Stream #0:0 : Video : png, rgba(pc), 3840x2160, 25 tbr, 25 tbn, 25 tbc Input #1, png_pipe, from
    ’C :\Users\khj\Desktop\SpeakerLayoutTool\Images_video\image_y.png’ :
    Duration : N/A, bitrate : N/A
    Stream #1:0 : Video : png, rgba(pc), 3840x2160, 25 tbr, 25 tbn, 25 tbc File ’C :\Users\khj\Desktop\SpeakerLayoutTool\video.mp4’ already
    exists. Overwrite ? [y/N] y Stream mapping : Stream #0:0 -> #0:0 (png
    (native) -> h264 (libx264)) Press [q] to stop, [?] for help [libx264 @
    0000016c2a46e000] using cpu capabilities : MMX2 SSE2Fast SSSE3 SSE4.2
    AVX FMA3 BMI2 AVX2 [libx264 @ 0000016c2a46e000] profile High 4:4:4
    Predictive, level 5.2, 4:4:4, 8-bit [libx264 @ 0000016c2a46e000] 264 -
    core 157 r2970 5493be8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 -
    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=4 threads=12
    lookahead_threads=2 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
    ’C :\Users\khj\Desktop\SpeakerLayoutTool\video.mp4’ : Metadata :
    encoder : Lavf58.27.103
    Stream #0:0 : Video : h264 (libx264) (avc1 / 0x31637661), yuv444p, 3840x2160, q=-1—1, 50 fps, 12800 tbn, 50 tbc
    Metadata :
    encoder : Lavc58.52.100 libx264
    Side data :
    cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : -1 frame= 250 fps= 22 q=-1.0 Lsize= 162kB time=00:00:04.94 bitrate=
    268.1kbits/s speed=0.444x

  • Why does FFMPEG work with 1080p but doesn't work with 720p size… (code included)

    2 avril 2017, par JavaRunner

    I’ve uploaded my fully compiled code with its Makefile here :

    https://pastebin.com/xtCTj06F

    If I set 1280x720 I get the segmentation fault :

    [libx264 @ 0x7fdf4d25a600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7fdf4d25a600] profile High, level 3.1
    
[libx264 @ 0x7fdf4d25a600] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=12 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=12 rc=abr mbtree=1 bitrate=3400 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '1.mp4':
    
    Stream #0:0: Video: h264, yuv420p, 1280x720, q=2-31, 3400 kb/s, 20 tbn
    
    Stream #0:1: Audio: aac (LC), 44100 Hz, stereo, fltp, 64 kb/s
    
sws_scale BEGIN
    
./MakeVideo.sh: line 2: 26422 Segmentation fault: 11  ./MakeVideo 1.mp4

    There’s some problem with this line :

    std::cout << "sws_scale BEGIN\n";
    
sws_scale( sws_context, ( const uint8_t * const * ) &rgb, inLinesize, 0, frame->height, frame->data, frame->linesize );
    
std::cout << "sws_scale END\n";

    but if I set the size of a video to 1920x1080 or to 320x240 - all works fine.

    Is that some sort of a magick ?? Or a bug ?

    OS X 10.12.3
    ffmpeg/3.2.4 —enable-shared —enable-pthreads —enable-gpl —enable-version3 —enable-hardcoded-tables —enable-avresample —cc=clang —host-cflags= —host-ldflags= —enable-libmp3lame —enable-libx264 —enable-libxvid —enable-opencl —disable-lzma —enable-vda

  • FFmpeg - MP4 file converted from PNG files is not playable [closed]

    2 mai 2024, par StamShamen

    I am attempting to use FFmpeg and JavaScript to convert multiple PNG files to an MP4 video. However, sometimes the output video is not playable (1kb) and no error appears in the output.

    


    This is the command that I run :

    


    ffmpeg -y -r 25 -i "videos-reporter/123/screenshots/%04d.png" -c:v libx264 -preset medium -crf 20 -pix_fmt yuv420p -vf "scale=1200:trunc(ow/a/2)*2,setpts=3.0*PTS" -threads 4 "videos-reporter/123/video.mp4"


    


    Output of playable video :

    


    Input #0, image2, from '/workspace/1/s/videos-reporter/MC4wMDM0NzUwNjg5NTc2NzMwMjI=/a464584b4d03585bd68abc0326e20b9a/screenshots/%04d.png':
  Duration: 00:00:01.44, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 1920x1080, 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x53a1000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x53a1000] profile High, level 3.1, 4:2:0, 8-bit
[libx264 @ 0x53a1000] 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=4 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=10 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 'videos-reporter/MC4wMDM0NzUwNjg5NTc2NzMwMjI=/a464584b4d03585bd68abc0326e20b9a/video.mp4':
  Metadata:
    encoder         : Lavf58.24.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1200x674, q=-1--1, 10 fps, 10240 tbn, 10 tbc
    Metadata:
      encoder         : Lavc58.42.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=   52 fps=0.0 q=25.0 size=       0kB time=00:00:00.10 bitrate=   3.8kbits/s dup=34 drop=0 speed=0.125x    
video:84kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.457641%
[libx264 @ 0x53a1000] frame I:4     Avg QP: 5.16  size: 14568
[libx264 @ 0x53a1000] frame P:27    Avg QP:15.86  size:   790
[libx264 @ 0x53a1000] frame B:76    Avg QP:12.71  size:    73
[libx264 @ 0x53a1000] consecutive B-frames:  3.7%  1.9%  8.4% 86.0%
[libx264 @ 0x53a1000] mb I  I16..4: 87.8%  4.1%  8.1%
[libx264 @ 0x53a1000] mb P  I16..4:  3.1%  2.0%  0.4%  P16..4:  0.4%  0.1%  0.0%  0.0%  0.0%    skip:93.9%
[libx264 @ 0x53a1000] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  1.3%  0.1%  0.0%  direct: 0.0%  skip:98.6%  L0:42.1% L1:57.7% BI: 0.2%
[libx264 @ 0x53a1000] 8x8 transform intra:12.8% inter:47.1%
[libx264 @ 0x53a1000] coded y,uvDC,uvAC intra: 5.9% 5.8% 5.1% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x53a1000] i16 v,h,dc,p: 81% 18%  1%  0%
[libx264 @ 0x53a1000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 16% 60%  0%  0%  0%  0%  0%  1%
[libx264 @ 0x53a1000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 48% 16%  1%  2%  2%  3%  2%  4%
[libx264 @ 0x53a1000] i8c dc,h,v,p: 90%  7%  2%  0%
[libx264 @ 0x53a1000] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x53a1000] ref P L0: 72.8%  2.5% 14.1% 10.6%
[libx264 @ 0x53a1000] ref B L0: 88.2% 11.0%  0.9%
[libx264 @ 0x53a1000] ref B L1: 99.3%  0.7%
[libx264 @ 0x53a1000] kb/s:63.64


    


    Output of not-playable video :

    


    Input #0, image2, from '/workspace/1/s/videos-reporter/MC4zOTQ2Nzk4NzMwMjU0MTU5Ng==/20ae4ef3d1e642b26d348adc4246965d/screenshots/%04d.png':
  Duration: 00:00:01.60, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 1920x1080, 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x5490c00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x5490c00] profile High, level 3.1, 4:2:0, 8-bit
[libx264 @ 0x5490c00] 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=4 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=10 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 'videos-reporter/MC4zOTQ2Nzk4NzMwMjU0MTU5Ng==/20ae4ef3d1e642b26d348adc4246965d/video.mp4':
  Metadata:
    encoder         : Lavf58.24.100
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1200x674, q=-1--1, 10 fps, 10240 tbn, 10 tbc
    Metadata:
      encoder         : Lavc58.42.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

stderr: frame=   19 fps=5.8 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=12 drop=0 speed=   0x    
stderr: frame=   64 fps= 17 q=25.0 size=       0kB time=00:00:01.30 bitrate=   0.3kbits/s dup=42 drop=0 speed=0.343x    
stderr: frame=  119 fps= 25 q=-1.0 Lsize=     153kB time=00:00:11.60 bitrate= 108.2kbits/s dup=79 drop=0 speed=2.46x    
video:151kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.431093%

stderr: [libx264 @ 0x5490c00] frame I:5     Avg QP: 6.42  size: 14533
[libx264 @ 0x5490c00] frame P:32    Avg QP:16.29  size:  2284
[libx264 @ 0x5490c00] frame B:82    Avg QP:14.77  size:   100
[libx264 @ 0x5490c00] consecutive B-frames:  5.9%  1.7% 15.1% 77.3%
[libx264 @ 0x5490c00] mb I  I16..4: 77.0% 14.4%  8.6%

stderr: [libx264 @ 0x5490c00] mb P  I16..4:  9.2%  3.4%  1.3%  P16..4:  2.5%  0.2%  0.1%  0.0%  0.0%    skip:83.3%
[libx264 @ 0x5490c00] mb B  I16..4:  0.1%  0.0%  0.0%  B16..8:  1.8%  0.1%  0.0%  direct: 0.0%  skip:97.9%  L0:42.9% L1:56.4% BI: 0.7%
[libx264 @ 0x5490c00] 8x8 transform intra:19.2% inter:66.1%
[libx264 @ 0x5490c00] coded y,uvDC,uvAC intra: 6.1% 7.5% 5.4% inter: 0.3% 0.4% 0.0%
[libx264 @ 0x5490c00] i16 v,h,dc,p: 61% 38%  1%  0%
[libx264 @ 0x5490c00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 47% 15% 37%  0%  0%  0%  0%  0%  0%
[libx264 @ 0x5490c00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 46% 14%  1%  2%  2%  3%  2%  3%
[libx264 @ 0x5490c00] i8c dc,h,v,p: 85% 13%  3%  0%
[libx264 @ 0x5490c00] Weighted P-Frames: Y:6.2% UV:6.2%
[libx264 @ 0x5490c00] ref P L0: 75.1%  5.0% 16.0%  3.9%  0.0%
[libx264 @ 0x5490c00] ref B L0: 77.6% 19.7%  2.7%
[libx264 @ 0x5490c00] ref B L1: 97.9%  2.1%
[libx264 @ 0x5490c00] kb/s:103.49


    


    Your help is appreciated since I couldn't find any solution for it.

    


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