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Collections - Formulaire de création rapide
19 février 2013, par
Mis à jour : Février 2013
Langue : français
Type : Image
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Les Miserables
4 juin 2012, par
Mis à jour : Février 2013
Langue : English
Type : Texte
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Ne pas afficher certaines informations : page d’accueil
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Mis à jour : Novembre 2011
Langue : français
Type : Image
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The Great Big Beautiful Tomorrow
28 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Texte
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Richard Stallman et la révolution du logiciel libre - Une biographie autorisée (version epub)
28 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Texte
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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (97)
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ANNEXE : Les plugins utilisés spécifiquement pour la ferme
5 mars 2010, parLe site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)
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HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
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Sur d’autres sites (8268)
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encoding with ffmpeg libx265 -pix_fmt gray gives unplayable vid
9 juin 2017, par netjiroWhat am I missing ?
I encode an old black and white film clip with ffmpeg libx265 passing -pix_fmt gray. The output is unplayable in both vlc and mplayer (linux), so I assume I’m missing something...encoding :
ffmpeg -i clip.mkv \
-c:v libx265 -preset slow -x265-params "crf=24" -pix_fmt gray \
-c:a libopus -b:a 64k \
-c:s copy \
out.mkvvlc errors :
[00007f8a3ddfe328] blend blend error: no matching alpha blending routine (chroma: RGBA -> GREY)
[00007f8a3ddfe328] core blend error: blending RGBA to GREY failed
... repeated ...mplayer errors :
Unexpected decoder output format Planar Y800
... repeated ...ffmpeg encoding output :
ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.9.4 (Gentoo 4.9.4 p1.0, pie-0.6.4)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --docdir=/usr/share/doc/ffmpeg-3.2.4/html --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags='-march=native -O2 -pipe' --disable-static --enable-avfilter --enable-avresample --disable-stripping --enable-nonfree --enable-version3 --disable-indev=oss --disable-indev=jack --disable-outdev=oss --enable-version3 --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-gcrypt --disable-gnutls --disable-gmp --enable-gpl --enable-hardcoded-tables --enable-iconv --enable-lzma --enable-network --enable-openssl --enable-postproc --disable-libsmbclient --enable-ffplay --enable-sdl2 --enable-vaapi --enable-vdpau --enable-xlib --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-zlib --enable-libcdio --disable-libiec61883 --disable-libdc1394 --disable-libcaca --enable-openal --enable-opengl --enable-libv4l2 --disable-libpulse --enable-libopencore-amrwb --enable-libopencore-amrnb --disable-libfdk-aac --enable-libopenjpeg --enable-libbluray --enable-libcelt --disable-libgme --disable-libgsm --disable-mmal --enable-libmodplug --enable-libopus --disable-libilbc --disable-librtmp --enable-libssh --enable-libschroedinger --enable-libspeex --enable-libvorbis --enable-libvpx --disable-libzvbi --disable-libbs2b --disable-chromaprint --disable-libebur128 --disable-libflite --disable-frei0r --disable-libfribidi --enable-fontconfig --disable-ladspa --disable-libass --enable-libfreetype --disable-librubberband --disable-libzimg --enable-libsoxr --enable-pthreads --enable-libvo-amrwbenc --enable-libmp3lame --disable-libkvazaar --disable-nvenc --disable-libopenh264 --enable-libsnappy --enable-libtheora --enable-libtwolame --enable-libwavpack --disable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --disable-amd3dnow --disable-amd3dnowext --disable-fma4 --disable-xop --cpu=host --disable-doc --disable-htmlpages --enable-manpages
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
x265 [info]: HEVC encoder version 2.2
x265 [info]: build info [Linux][GCC 4.9.4][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
x265 [info]: Unknown profile, Level-3.1 (Main tier)
x265 [warning]: No thread pool allocated, --wpp disabled
x265 [warning]: No thread pool allocated, --lookahead-slices disabled
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 3 / none
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 : star / 57 / 3 / 3
x265 [info]: Keyframe min / max / scenecut / bias: 23 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 25 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 4 / on / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 1 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-24.0 / 0.60
x265 [info]: tools: rect limit-modes rd=4 psy-rd=2.00 rdoq=2 psy-rdoq=1.00
x265 [info]: tools: rskip signhide tmvp strong-intra-smoothing deblock sao
Output #0, matroska, to 'out.mkv':
Metadata:
encoder : Lavf57.56.101
Metadata:
Stream #0:0(eng): Video: hevc (libx265), gray, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 1k tbn, 23.98 tbc (default)
Metadata:
encoder : Lavc57.64.101 libx265
Stream #0:1(eng): Audio: opus (libopus) ([255][255][255][255] / 0xFFFFFFFF), 48000 Hz, stereo, flt, 64 kb/s (default)
Metadata:
encoder : Lavc57.64.101 libopus
Stream #0:2(eng): Subtitle: subrip (default)
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> hevc (libx265))
Stream #0:1 -> #0:1 (eac3 (native) -> opus (libopus))
Stream #0:3 -> #0:2 (copy)
Press [q] to stop, [?] for help
frame= 1439 fps=7.0 q=-0.0 Lsize= 5356kB time=00:01:00.01 bitrate= 731.1kbits/s speed=0.294x
video:4940kB audio:382kB subtitle:1kB other streams:0kB global headers:2kB muxing overhead: 0.629434%
x265 [info]: frame I: 9, Avg QP:22.27 kb/s: 6064.82
x265 [info]: frame P: 340, Avg QP:23.62 kb/s: 1950.21
x265 [info]: frame B: 1090, Avg QP:29.65 kb/s: 230.75
x265 [info]: Weighted P-Frames: Y:0.9% UV:0.0%
x265 [info]: consecutive B-frames: 2.9% 0.3% 1.4% 72.5% 22.9% -
Converting DAV to MP4 and OGG
25 avril, par mackowiakpI want to prepare WEB page containing films from security camera recorders. Each recorder transmit video files in DAV format so each film is converted to MP4 format by script, using such syntax :



ffmpeg -y -i movie.dav -vcodec libx264 -crf 24 movie.mp4




So I included in HTMLv5 code such entry :



<video width="320" height="240">
 <source src="movie.mp4" type="video/mp4">
</source></video> 




It works correctly with Chrome but not with Firefox. For proper work in FF it is necessary add link to OGG file. So correct HTMLv5 syntax for both browsers should look like this :



<video width="320" height="240">
 <source src="movie.mp4" type="video/mp4">
 <source src="movie.ogg" type="video/ogg">
</source></source></video>




Can anybody help me to pass correct ffmpeg syntax to create OGG file ?



Output from console after using -movflags +faststart options



[maciek@piotr MMM]$ ../ffmpeg-2.4.2-64bit-static/ffmpeg -movflags +faststart -y -i 04.24.23-04.24.38\[M\]\[@0\]\[0\].dav -vcodec libx264 -crf 24 10.mp4
ffmpeg version 2.4.2- http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2014 the FFmpeg developers
 built on Oct 9 2014 07:24:56 with gcc 4.8 (Debian 4.8.3-11)
 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 --disable-ffserver --enable-libass --enable-gnutls --cc=gcc-4.8
 libavutil 54. 7.100 / 54. 7.100
 libavcodec 56. 1.100 / 56. 1.100
 libavformat 56. 4.101 / 56. 4.101
 libavdevice 56. 0.100 / 56. 0.100
 libavfilter 5. 1.100 / 5. 1.100
 libswscale 3. 0.100 / 3. 0.100
 libswresample 1. 1.100 / 1. 1.100
 libpostproc 53. 0.100 / 53. 0.100
Option movflags not found.



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Showfreqs and showwaves over background image ?
11 octobre 2017, par JeremyI’m wanting to get FFMPEG to export my podcast audio to a file I can upload to youtube that is visually interesting.
currently I am using the following piece of code, which I don’t fully grasp :
ffmpeg -i E04_ProphetsPrey.wav -filter_complex \
" [0:a]showfreqs=mode=line:ascale=log:fscale=rlog:s=1280x518,pad=1280:720[vs]; \
[0:a]showfreqs=mode=line:ascale=log:fscale=rlog:s=1x1[ss]; \
[0:a]showwaves=s=1280x202:mode=p2p[sw]; \
[vs][ss]overlay=w[bg]; \
[bg][sw]overlay=0:H-h,drawtext=fontfile=/usr/share/fonts/TTF/Vera.ttf:fontcolor=white:x=10:y=10:text='\"Rated80s Prophets Prey\" by Comics On Film'[out]" \
-map "[out]" -map 0:a -c:v libx264 -preset fast -crf 18 -c:a copy -threads 0 output.mkvwhat I would like to do is set a (branded) background image, and have showfreqs render over it on the top half and showwaves render over it on the bottom half.
Is that possible, and if so could you provide me a detailed example ?
(I’m on arch linux)