
Recherche avancée
Autres articles (60)
-
Configurer la prise en compte des langues
15 novembre 2010, parAccéder 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 (...) -
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
-
Emballe médias : à quoi cela sert ?
4 février 2011, parCe 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 (7601)
-
Dropped frames in ffmpeg when adding an overlay
31 janvier 2016, par JuananI’m trying to add a white overlay box using ffmpeg to an mp4 file downloaded from YouTube. I know the syntax and it is working OK with small videos, but I’m struggling to get it to work in a longer one. This is the exact command :
ffmpeg -i intro.mp4 -strict -2 -vf "color=white:200x50 [over]; [in][over] overlay=250:320:enable=between(t\,0\,52) [out]" out.mp4
Initially, it works like a charm :
$ ffmpeg -i intro.mp4 -preset slow -strict -2 -vf "color=white:200x50 [over]; [in][over] overlay=250:320:enable=between(t\,0\,52) [out]" -t 60 out.mp4
ffmpeg version 2.5.3 Copyright (c) 2000-2015 the FFmpeg developers
built on Mar 26 2015 23:00:53 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 13.100 / 56. 13.100
libavformat 56. 15.102 / 56. 15.102
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 2.103 / 5. 2.103
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2014-01-30 16:48:50
Duration: 00:13:30.70, start: 0.000000, bitrate: 692 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 497 kb/s, 25 fps, 25 tbr, 50 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
Metadata:
creation_time : 2014-01-30 16:48:54
handler_name : IsoMedia File Produced by Google, 5-11-2011
File 'out.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x7fa8cb82fa00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
[libx264 @ 0x7fa8cb82fa00] profile High, level 3.1
[libx264 @ 0x7fa8cb82fa00] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 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=3 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=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 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 'out.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
encoder : Lavf56.15.102
Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc56.13.100 libx264
Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
creation_time : 2014-01-30 16:48:54
handler_name : IsoMedia File Produced by Google, 5-11-2011
encoder : Lavc56.13.100 aac
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
frame= 1500 fps= 47 q=-1.0 Lsize= 2518kB time=00:01:00.00 bitrate= 343.8kbits/sBut after some time, that command starts yelling dropped frames :
frame=20269 fps= 21 q=-1.0 Lsize= 23283kB time=00:13:30.70 bitrate= 235.3kbits/s dup=0 drop=548431
and it never ends. Any clue ?
-
arm : Implement x284_decimate_score15/16/64_neon
25 août 2015, par Martin Storsjöarm : Implement x284_decimate_score15/16/64_neon
checkasm timing Cortex-A7 A8 A9
decimate_score15_c 764 736 535
decimate_score15_neon 487 494 453
decimate_score16_c 782 727 553
decimate_score16_neon 487 494 521
decimate_score64_c 2361 2597 2011
decimate_score64_neon 1017 802 785 -
ffmpeg complains about incorrect parameters
20 novembre 2015, par Nik SoHi there I am trying to convert a wave file to mp3 with ffmpeg and I get the following error messages. Could anyone perhaps give me a hint as to what the potential problem might be ? thank you !
FFmpeg version git-7ed4ff0, Copyright (c) 2000-2011 the FFmpeg developers
built on Oct 31 2015 08:02:55 with gcc 4.6.4
configuration: --prefix=/srv/current/stack --enable-gpl --enable-nonfree --enable-pthreads --enable-version3 --enable-x11grab --enable-avfilter --enable-libspeex --enable-librtmp --enable-libfaac --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-libvpx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-pic --enable-shared
libavutil 50. 37. 0 / 50. 37. 0
libavcore 0. 16. 1 / 0. 16. 1
libavcodec 52.112. 1 / 52.112. 1
libavformat 52. 99. 1 / 52. 99. 1
libavdevice 52. 2. 3 / 52. 2. 3
libavfilter 1. 75. 0 / 1. 75. 0
libswscale 0. 12. 0 / 0. 12. 0
[wav @ 0xaa8560] max_analyze_duration reached
Input #0, wav, from '/srv/shared/tmp/upload/upload_1747a42a8869bc9927a2e4a7d2f65368.WAV':
Duration: 00:01:03.06, bitrate: 3456 kb/s
Stream #0.0: Audio: pcm_s24le, 48000 Hz, 3 channels, s32, 3456 kb/s
Incompatible sample format 's32' for codec 'libmp3lame', auto-selecting format 's16'
Output #0, mp3, to '/srv/shared/tmp/scratch/05f12c018e4411e59e55c364c14dbce0':
Stream #0.0: Audio: libmp3lame, 44100 Hz, 3 channels, s16, 128 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or heightEDIT :
Hi there, forgot to put the command that triggered the error, here it is :nice ffmpeg-v1.0.0 -i /srv/shared/tmp/upload/upload_dd34711f1164d4499bb0d4d36ae4462d.wav -acodec libmp3lame -ar 44100 -ab 128000 -f mp3 -vn /srv/shared/tmp/scratch/65e3ba218f1011e59350073ba02f8ea7