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Autres articles (60)
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Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
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Ajouter notes et légendes aux images
7 février 2011, parPour 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 (...) -
Configuration spécifique d’Apache
4 février 2011, parModules spécifiques
Pour la configuration d’Apache, il est conseillé d’activer certains modules non spécifiques à MediaSPIP, mais permettant d’améliorer les performances : mod_deflate et mod_headers pour compresser automatiquement via Apache les pages. Cf ce tutoriel ; mode_expires pour gérer correctement l’expiration des hits. Cf ce tutoriel ;
Il est également conseillé d’ajouter la prise en charge par apache du mime-type pour les fichiers WebM comme indiqué dans ce tutoriel.
Création d’un (...)
Sur d’autres sites (8613)
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rtpenc : Set a default video codec
17 octobre 2011, par Martin Storsjörtpenc : Set a default video codec
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Ut Video decoder
16 octobre 2011, par Kostya ShishkovUt Video decoder
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.mov conversion to .mp4 using ffmpeg doesn't convert the entire video
5 février 2013, par user504879I am trying to convert a mov file which I got from saving my powerpoint presentation to a movie file. However only a part of the presentation is converted not the entire one and also running qt-start doesn't make the exported mp4 to stream over rtmp. Is there something which I am missing ?
I am attaching the output which i get when I am trying to convert the file using ffmpeg
$ export LD_LIBRARY_PATH=/usr/local/lib; /usr/local/bin/ffmpeg -y -i /data/tmp/vialogues_prez.mov -r 20 -g 40 -acodec libfaac -ar 44100 -ab 96k -vcodec libx264 -s 640x480 -vpre medium /data/videos/vialogues_prez.mp4
FFmpeg version 0.6.1, Copyright (c) 2000-2010 the FFmpeg developers
built on Feb 19 2011 19:03:56 with gcc 4.4.5
configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x186f460]max_analyze_duration reached
Seems stream 0 codec frame rate differs from container frame rate: 600.00 (600/1) -> 0.08 (1/12)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/tmp/vialogues_prez.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
comment : Microsoft PowerPoint Movie
comment-eng : Microsoft PowerPoint Movie
Duration: 00:04:47.00, start: 0.000000, bitrate: 22 kb/s
Stream #0.0(eng): Video: qtrle, bgra, 640x480, 21 kb/s, 0.01 fps, 0.08 tbr, 600 tbn, 600 tbc
Stream #0.1(eng): Video: 0x0000, 600 tbr, 600 tbn, 600 tbc
Stream #0.2(eng): Video: 0x0000, 600 tbr, 600 tbn, 600 tbc
[libx264 @ 0x1873b50]using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
[libx264 @ 0x1873b50]profile High, level 3.0
[libx264 @ 0x1873b50]264 - core 114 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - 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=1 sliced_threads=0 nr=0 decimate=1 interlaced=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=200 ratetol=20.0 qcomp=0.60 qpmin=10 qpmax=51 qpstep=4 ip_ratio=1.41 aq=1:1.00
Output #0, mp4, to '/data/videos/vialogues_prez.mp4':
Metadata:
encoder : Lavf52.64.2
Stream #0.0(eng): Video: libx264, yuv420p, 640x480, q=10-51, 200 kb/s, 20 tbn, 20 tbc
Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
frame= 4 fps= 0 q=32766.0 Lsize= 50kB time=45.05 bitrate= 9.0kbits/s
video:49kB audio:0kB global headers:0kB muxing overhead 1.740573%
[libx264 @ 0x1873b50]frame I:1 Avg QP:32.73 size: 8427
[libx264 @ 0x1873b50]frame P:3 Avg QP:20.68 size: 13640
[libx264 @ 0x1873b50]mb I I16..4: 60.8% 14.6% 24.7%
[libx264 @ 0x1873b50]mb P I16..4: 28.7% 7.2% 15.4% P16..4: 2.0% 1.3% 1.4% 0.0% 0.0% skip:43.9%
[libx264 @ 0x1873b50]final ratefactor: -16.67
[libx264 @ 0x1873b50]8x8 transform intra:14.2% inter:5.0%
[libx264 @ 0x1873b50]coded y,uvDC,uvAC intra: 25.2% 18.4% 13.0% inter: 5.3% 7.4% 7.2%
[libx264 @ 0x1873b50]i16 v,h,dc,p: 63% 34% 1% 2%
[libx264 @ 0x1873b50]i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 41% 31% 1% 1% 1% 1% 1% 4%
[libx264 @ 0x1873b50]i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 33% 19% 2% 3% 3% 4% 3% 4%
[libx264 @ 0x1873b50]i8c dc,h,v,p: 75% 20% 4% 1%
[libx264 @ 0x1873b50]Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1873b50]ref P L0: 57.0% 12.2% 26.2% 4.7%
[libx264 @ 0x1873b50]kb/s:1.14any help is appreciated.
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