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  • Qu’est ce qu’un masque de formulaire

    13 juin 2013, par

    Un masque de formulaire consiste en la personnalisation du formulaire de mise en ligne des médias, rubriques, actualités, éditoriaux et liens vers des sites.
    Chaque formulaire de publication d’objet peut donc être personnalisé.
    Pour accéder à la personnalisation des champs de formulaires, il est nécessaire d’aller dans l’administration de votre MediaSPIP puis de sélectionner "Configuration des masques de formulaires".
    Sélectionnez ensuite le formulaire à modifier en cliquant sur sont type d’objet. (...)

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 is the first MediaSPIP stable release.
    Its official release date is June 21, 2013 and is announced here.
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

Sur d’autres sites (8714)

  • How to compare visually two look alike videos of different codec, size, resolution

    18 novembre 2015, par Abdul Gafoor

    Is it possible to compare pragmatically, two look alike videos of different codec, size and resolution. I went through the some tools like ffmpeg opencv.

    Or in the another context, Lets an image should be compared with video and find out the exact time where the image visually present in the given video. The codecs, size and resolution of video and image may vary.

  • FFMPEG - convert video without losing resolution

    29 octobre 2015, par Srh

    I am using ffmpeg to convert mp4 video from youtube. The video is HD 1080. When I convert it to mpeg2video, the video loses its sharpness, regardless of the -s 1920x1080 parameter. How can I convert the video without losing picture sharpness ? The command I use is :

    ffmpeg -i BBB.mp4 -vcodec mpeg2video -s1920x1080 -acodec copy -f mpegts BBB.ts

  • FFMPEG gets stuck on higher resolution or frame rate [H265]

    29 octobre 2015, par Anakooter

    I am running the following command which works perfectly on my system running Elementary OS on Intel Corei5 :

    ffmpeg -f v4l2 -i /dev/video0 -c:v libx265 -x265-params crf=14:vbv-maxrate=128:vbv-bufsize=32:keyint=10:qcomp=0.5:rd=5:ctu=64:min-cu-size=8:cu-lossless=false:fast-intra=false:strong-intra-smoothing=false -tune zerolatency -s 640x480 -preset ultrafast -r 5 -pix_fmt yuv420p -an -strict experimental -f mpegts udp://239.0.0.1:5002

    but if I change the output size to 800x600 and or increase the frame rate from 5 to 10. After a few seconds the video gets stuck.

    I have monitored the CPU usage for both the commands and it is almost identical that is between 300 to 400 percent ( since 4 cores ).

    Any possible answers to mitigate the issue.

    ffmpeg version 2.7.2-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2015 the FFmpeg developers
    
built with gcc 4.9.3 (Debian 4.9.3-1)
    
configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --enable-libsoxr --cc=gcc-4.9
    
libavutil      54. 27.100 / 54. 27.100
    
libavcodec     56. 41.100 / 56. 41.100
    
libavformat    56. 36.100 / 56. 36.100
    
libavdevice    56.  4.100 / 56.  4.100
    
libavfilter     5. 16.101 /  5. 16.101
    
libswscale      3.  1.101 /  3.  1.101
    
libswresample   1.  2.100 /  1.  2.100
    
libpostproc    53.  3.100 / 53.  3.100
    
Routing option strict to both codec and muxer layer
    
[video4linux2,v4l2 @ 0x4775460] fd:4 capabilities:84000001
    
Input #0, video4linux2,v4l2, from '/dev/video0':
    
Duration: N/A, start: 1223.904801, bitrate: 36864 kb/s
    
Stream #0:0: Video: rawvideo, 1 reference frame (YUY2 / 0x32595559), yuyv422, 320x240, 36864 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
    
[graph 0 input from stream 0:0 @ 0x476aae0] w:320 h:240 pixfmt:yuyv422     tb:1/1000000 fr:30/1 sar:0/1 sws_param:flags=2
    
[scaler for output stream 0:0 @ 0x476a920] w:800 h:600 flags:'0x4' interl:0
    
[scaler for output stream 0:0 @ 0x476a920] w:320 h:240 fmt:yuyv422 sar:0/1 -> w:800 h:600 fmt:yuv420p sar:0/1 flags:0x4
    
x265 [info]: HEVC encoder version 1.7+354-b2ba7df1fc69
    
x265 [info]: build info [Linux][GCC 4.9.3][64 bit] 8bit
    
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
x265 [info]: Main profile, Level-3 (Main tier)
    
x265 [info]: Thread pool created using 4 threads
    
x265 [info]: frame threads / pool features       : 2 / wpp(10 rows)
    
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
    
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
    
x265 [info]: ME / range / subpel / merge         : dia / 57 / 0 / 2
    
x265 [info]: Keyframe min / max / scenecut       : 1 / 10 / 0
    
x265 [info]: Lookahead / bframes / badapt        : 0 / 0 / 0
    
x265 [info]: b-pyramid / weightp / weightb       : 0 / 0 / 0
    
x265 [info]: References / ref-limit  cu / depth  : 1 / 0 / 0
    
x265 [info]: Rate Control / qCompress            : CRF-14.0 / 0.50
    
x265 [info]: VBV/HRD buffer / max-rate / init    : 32 / 64 / 0.900
    
x265 [info]: tools: rd=5 psy-rd=0.30 early-skip tmvp deblock
    
[mpegts @ 0x4776b00] muxrate VBR, pcr every 1 pkts, sdt every 200, pat/pmt every 40 pkts
    
Output #0, mpegts, to 'udp://239.0.0.1:5002':
    
Metadata:
    
encoder         : Lavf56.36.100
    
Stream #0:0: Video: hevc (libx265), 1 reference frame, yuv420p, 800x600, q=2-31, 10 fps, 90k tbn, 10 tbc
    
Metadata:
    
encoder         : Lavc56.41.100 libx265
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> hevc (libx265))
    
Press [q] to stop, [?] for help
    
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*** 555 dup!fps= 10 q=0.0 size=      86kB time=00:00:08.00 bitrate=  88.4kbits/s dup=21 drop=112    
    
x265 [warning]: poc:131, VBV underflow (-6152 bits)
    
x265 [warning]: poc:151, VBV underflow (-17080 bits)
    
x265 [warning]: poc:211, VBV underflow (-10272 bits)
    
x265 [warning]: poc:301, VBV underflow (-9024 bits)
    
x265 [warning]: poc:391, VBV underflow (-11368 bits)
    
x265 [warning]: poc:501, VBV underflow (-6152 bits)
    
x265 [warning]: poc:559, VBV underflow (-320 bits)
    
x265 [warning]: poc:581, VBV underflow (-16552 bits)
    
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*** 70055 dup!

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