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Médias (2)
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Exemple de boutons d’action pour une collection collaborative
27 février 2013, par
Mis à jour : Mars 2013
Langue : français
Type : Image
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Exemple de boutons d’action pour une collection personnelle
27 février 2013, par
Mis à jour : Février 2013
Langue : English
Type : Image
Autres articles (68)
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Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...) -
Menus personnalisés
14 novembre 2010, parMediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
Menus créés à l’initialisation du site
Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...) -
Le plugin : Gestion de la mutualisation
2 mars 2010, parLe plugin de Gestion de mutualisation permet de gérer les différents canaux de mediaspip depuis un site maître. Il a pour but de fournir une solution pure SPIP afin de remplacer cette ancienne solution.
Installation basique
On installe les fichiers de SPIP sur le serveur.
On ajoute ensuite le plugin "mutualisation" à la racine du site comme décrit ici.
On customise le fichier mes_options.php central comme on le souhaite. Voilà pour l’exemple celui de la plateforme mediaspip.net :
< ?php (...)
Sur d’autres sites (10304)
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checkasm : add vvc_sao
14 décembre 2024, par Shaun Loocheckasm : add vvc_sao
This is a part of Google Summer of Code 2023
AVX2 :
- vvc_sao.sao_band [OK]
- vvc_sao.sao_edge [OK]
checkasm : all 54 tests passed
vvc_sao_band_8_8_c : 157.4 ( 1.00x)
vvc_sao_band_8_8_avx2 : 30.7 ( 5.12x)
vvc_sao_band_8_10_c : 119.4 ( 1.00x)
vvc_sao_band_8_10_avx2 : 29.2 ( 4.09x)
vvc_sao_band_8_12_c : 144.6 ( 1.00x)
vvc_sao_band_8_12_avx2 : 30.0 ( 4.82x)
vvc_sao_band_16_8_c : 446.5 ( 1.00x)
vvc_sao_band_16_8_avx2 : 103.3 ( 4.32x)
vvc_sao_band_16_10_c : 399.2 ( 1.00x)
vvc_sao_band_16_10_avx2 : 64.3 ( 6.21x)
vvc_sao_band_16_12_c : 472.9 ( 1.00x)
vvc_sao_band_16_12_avx2 : 56.5 ( 8.37x)
vvc_sao_band_32_8_c : 2430.9 ( 1.00x)
vvc_sao_band_32_8_avx2 : 203.3 (11.96x)
vvc_sao_band_32_10_c : 1405.7 ( 1.00x)
vvc_sao_band_32_10_avx2 : 208.5 ( 6.74x)
vvc_sao_band_32_12_c : 2054.3 ( 1.00x)
vvc_sao_band_32_12_avx2 : 213.0 ( 9.64x)
vvc_sao_band_48_8_c : 3835.4 ( 1.00x)
vvc_sao_band_48_8_avx2 : 604.2 ( 6.35x)
vvc_sao_band_48_10_c : 3624.6 ( 1.00x)
vvc_sao_band_48_10_avx2 : 468.8 ( 7.73x)
vvc_sao_band_48_12_c : 3752.4 ( 1.00x)
vvc_sao_band_48_12_avx2 : 477.5 ( 7.86x)
vvc_sao_band_64_8_c : 6061.1 ( 1.00x)
vvc_sao_band_64_8_avx2 : 803.9 ( 7.54x)
vvc_sao_band_64_10_c : 6142.5 ( 1.00x)
vvc_sao_band_64_10_avx2 : 827.3 ( 7.43x)
vvc_sao_band_64_12_c : 6106.6 ( 1.00x)
vvc_sao_band_64_12_avx2 : 839.9 ( 7.27x)
vvc_sao_band_80_8_c : 9478.0 ( 1.00x)
vvc_sao_band_80_8_avx2 : 1516.7 ( 6.25x)
vvc_sao_band_80_10_c : 10300.5 ( 1.00x)
vvc_sao_band_80_10_avx2 : 1298.7 ( 7.93x)
vvc_sao_band_80_12_c : 8941.1 ( 1.00x)
vvc_sao_band_80_12_avx2 : 1315.3 ( 6.80x)
vvc_sao_band_96_8_c : 13351.5 ( 1.00x)
vvc_sao_band_96_8_avx2 : 1815.4 ( 7.35x)
vvc_sao_band_96_10_c : 13197.5 ( 1.00x)
vvc_sao_band_96_10_avx2 : 1872.4 ( 7.05x)
vvc_sao_band_96_12_c : 11969.0 ( 1.00x)
vvc_sao_band_96_12_avx2 : 1895.8 ( 6.31x)
vvc_sao_band_112_8_c : 19936.9 ( 1.00x)
vvc_sao_band_112_8_avx2 : 2802.3 ( 7.11x)
vvc_sao_band_112_10_c : 19534.9 ( 1.00x)
vvc_sao_band_112_10_avx2 : 2635.0 ( 7.41x)
vvc_sao_band_112_12_c : 16520.6 ( 1.00x)
vvc_sao_band_112_12_avx2 : 2591.8 ( 6.37x)
vvc_sao_band_128_8_c : 25967.5 ( 1.00x)
vvc_sao_band_128_8_avx2 : 3155.3 ( 8.23x)
vvc_sao_band_128_10_c : 24002.6 ( 1.00x)
vvc_sao_band_128_10_avx2 : 3374.6 ( 7.11x)
vvc_sao_band_128_12_c : 20829.4 ( 1.00x)
vvc_sao_band_128_12_avx2 : 3377.0 ( 6.17x)
vvc_sao_edge_8_8_c : 174.6 ( 1.00x)
vvc_sao_edge_8_8_avx2 : 37.0 ( 4.72x)
vvc_sao_edge_8_10_c : 174.4 ( 1.00x)
vvc_sao_edge_8_10_avx2 : 58.5 ( 2.98x)
vvc_sao_edge_8_12_c : 171.1 ( 1.00x)
vvc_sao_edge_8_12_avx2 : 58.5 ( 2.93x)
vvc_sao_edge_16_8_c : 677.7 ( 1.00x)
vvc_sao_edge_16_8_avx2 : 72.2 ( 9.39x)
vvc_sao_edge_16_10_c : 724.8 ( 1.00x)
vvc_sao_edge_16_10_avx2 : 106.4 ( 6.81x)
vvc_sao_edge_16_12_c : 647.0 ( 1.00x)
vvc_sao_edge_16_12_avx2 : 106.6 ( 6.07x)
vvc_sao_edge_32_8_c : 3001.8 ( 1.00x)
vvc_sao_edge_32_8_avx2 : 157.6 (19.04x)
vvc_sao_edge_32_10_c : 3071.1 ( 1.00x)
vvc_sao_edge_32_10_avx2 : 404.2 ( 7.60x)
vvc_sao_edge_32_12_c : 2698.6 ( 1.00x)
vvc_sao_edge_32_12_avx2 : 398.8 ( 6.77x)
vvc_sao_edge_48_8_c : 6557.7 ( 1.00x)
vvc_sao_edge_48_8_avx2 : 380.1 (17.25x)
vvc_sao_edge_48_10_c : 6319.9 ( 1.00x)
vvc_sao_edge_48_10_avx2 : 896.3 ( 7.05x)
vvc_sao_edge_48_12_c : 6306.4 ( 1.00x)
vvc_sao_edge_48_12_avx2 : 885.5 ( 7.12x)
vvc_sao_edge_64_8_c : 11510.7 ( 1.00x)
vvc_sao_edge_64_8_avx2 : 504.1 (22.84x)
vvc_sao_edge_64_10_c : 10917.4 ( 1.00x)
vvc_sao_edge_64_10_avx2 : 1608.3 ( 6.79x)
vvc_sao_edge_64_12_c : 11499.8 ( 1.00x)
vvc_sao_edge_64_12_avx2 : 1586.4 ( 7.25x)
vvc_sao_edge_80_8_c : 18193.2 ( 1.00x)
vvc_sao_edge_80_8_avx2 : 930.2 (19.56x)
vvc_sao_edge_80_10_c : 17984.3 ( 1.00x)
vvc_sao_edge_80_10_avx2 : 2420.9 ( 7.43x)
vvc_sao_edge_80_12_c : 18289.4 ( 1.00x)
vvc_sao_edge_80_12_avx2 : 2412.1 ( 7.58x)
vvc_sao_edge_96_8_c : 26361.8 ( 1.00x)
vvc_sao_edge_96_8_avx2 : 1118.4 (23.57x)
vvc_sao_edge_96_10_c : 26162.2 ( 1.00x)
vvc_sao_edge_96_10_avx2 : 3666.9 ( 7.13x)
vvc_sao_edge_96_12_c : 25926.6 ( 1.00x)
vvc_sao_edge_96_12_avx2 : 3433.9 ( 7.55x)
vvc_sao_edge_112_8_c : 36562.9 ( 1.00x)
vvc_sao_edge_112_8_avx2 : 1741.0 (21.00x)
vvc_sao_edge_112_10_c : 38126.4 ( 1.00x)
vvc_sao_edge_112_10_avx2 : 5153.3 ( 7.40x)
vvc_sao_edge_112_12_c : 36345.7 ( 1.00x)
vvc_sao_edge_112_12_avx2 : 4684.9 ( 7.76x)
vvc_sao_edge_128_8_c : 46379.8 ( 1.00x)
vvc_sao_edge_128_8_avx2 : 2012.4 (23.05x)
vvc_sao_edge_128_10_c : 47029.5 ( 1.00x)
vvc_sao_edge_128_10_avx2 : 6162.2 ( 7.63x)
vvc_sao_edge_128_12_c : 49647.3 ( 1.00x)
vvc_sao_edge_128_12_avx2 : 6127.1 ( 8.10x)Co-authored-by : Nuo Mi <nuomi2021@gmail.com>
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avutil : remove deprecated FF_API_FRAME_PKT
19 février, par James Almeravutil : remove deprecated FF_API_FRAME_PKT
Deprecated since 2023-03-20.
Signed-off-by : James Almer <jamrial@gmail.com>
- [DH] libavcodec/av1dec.c
- [DH] libavcodec/cuviddec.c
- [DH] libavcodec/decode.c
- [DH] libavcodec/libuavs3d.c
- [DH] libavdevice/lavfi.c
- [DH] libavfilter/af_volume.c
- [DH] libavfilter/af_volume.h
- [DH] libavfilter/avfilter.c
- [DH] libavfilter/f_select.c
- [DH] libavfilter/f_sendcmd.c
- [DH] libavfilter/setpts.c
- [DH] libavfilter/vf_crop.c
- [DH] libavfilter/vf_drawtext.c
- [DH] libavfilter/vf_eq.c
- [DH] libavfilter/vf_eq.h
- [DH] libavfilter/vf_overlay.c
- [DH] libavfilter/vf_overlay.h
- [DH] libavfilter/vf_overlay_cuda.c
- [DH] libavfilter/vf_scale.c
- [DH] libavfilter/vf_scale_npp.c
- [DH] libavfilter/vf_swaprect.c
- [DH] libavutil/frame.c
- [DH] libavutil/frame.h
- [DH] libavutil/version.h
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FFMPEG : how to create a "title slide" for 3 seconds before a video [closed]
15 mars 2024, par ashayI'm trying to make a lecture video to put online. I have the video itself, and I have a title slide that I'd like to play for 3 seconds before the main video.


I tried using ffmpeg to (1) create a 3 second long video from the title slide and (2) concat the two videos together.


I'm having issues concatenating the videos together — when I do so, the resulting video is much longer than it should be. When I look online, others have similar problems — and this seems to occur when the parameters of the two videos do not match perfectly.


I'd prefer to do this without re-encoding the main video — and it seems this should be possible because I should be able to control what parameters are set for the "lecture slide video".


Here are the commands I've run.
The main video has framerate 25, resolution 1920x1080, and an audio stream at #0:0 and a video stream at #0:1 (according to ffmpeg -i [video].


To create the video of the title slide, I ran
ffmpeg -framerate 25 -i lec01_title.png -t 3 -c:v libx264 -x265-params lossless=1 -pix_fmt yuvj420p -vf scale=1920:1080 lec01_title.mp4 -f lavfi -i anullsrc -c:a aac -shortest.
Then to reorder the streams to match the main video, I ranffmpeg -i lec01_title.mp4 -map 0:a -map 0:v -c:v copy -c:a copy lec01_title_matched.mp4.

Then to concatenate the two files together, I created a text file "concat_list" with :

file 'lec01_title_matched.mp4' file 'lec01.mp4', and ran the commandffmpeg -f concat -safe 0 -i concat_list.txt -c copy -movflags +faststart output.mp4.

The main video is 53 minutes long, but the final output video after concatenating is 1 hour and 43 minutes long.


I'm looking for advice for how to create the "lecture title video" properly to match the parameters of the second video so that I can concatenate them without problems.


Here's the output of
ffmpeg -i lec01.mp4:

ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/6.1.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
 libavutil 58. 29.100 / 58. 29.100
 libavcodec 60. 31.102 / 60. 31.102
 libavformat 60. 16.100 / 60. 16.100
 libavdevice 60. 3.100 / 60. 3.100
 libavfilter 9. 12.100 / 9. 12.100
 libswscale 7. 5.100 / 7. 5.100
 libswresample 4. 12.100 / 4. 12.100
 libpostproc 57. 3.100 / 57. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dcai_lec01.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 title : 2-190-wideshot
 encoder : Lavf60.16.100
 Duration: 00:47:39.08, start: 0.000000, bitrate: 1435 kb/s
 Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 1298 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 encoder : Lavc60.31.102 libx264


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