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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (77)
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La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)
Sur d’autres sites (4924)
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FFMPEG not found error while attempting to implement ffmpeg into discord bot
17 février 2020, par Ravenr_While implementing a music feature into my node.js discord.js discord bot, I got an error claiming that it cant find FFMPEG. I reinstalled ffmpeg 3 times to no avail.
This is the full error
2020-02-17T01:48:30.403766+00:00 app[worker.1]: (node:4) UnhandledPromiseRejectionWarning: Error: FFMPEG not found
2020-02-17T01:48:30.403797+00:00 app[worker.1]: at Function.selectFfmpegCommand (/app/node_modules/prism-media/src/transcoders/ffmpeg/Ffmpeg.js:46:13)
2020-02-17T01:48:30.403798+00:00 app[worker.1]: at new FfmpegTranscoder (/app/node_modules/prism-media/src/transcoders/ffmpeg/Ffmpeg.js:7:37)
2020-02-17T01:48:30.403798+00:00 app[worker.1]: at new MediaTranscoder (/app/node_modules/prism-media/src/transcoders/MediaTranscoder.js:10:19)
2020-02-17T01:48:30.403799+00:00 app[worker.1]: at new Prism (/app/node_modules/prism-media/src/Prism.js:5:23)
2020-02-17T01:48:30.403799+00:00 app[worker.1]: at new VoiceConnection (/app/node_modules/discord.js/src/client/voice/VoiceConnection.js:46:18)
2020-02-17T01:48:30.403800+00:00 app[worker.1]: at /app/node_modules/discord.js/src/client/voice/ClientVoiceManager.js:63:22
2020-02-17T01:48:30.403800+00:00 app[worker.1]: at new Promise (<anonymous>)
2020-02-17T01:48:30.403801+00:00 app[worker.1]: at ClientVoiceManager.joinChannel (/app/node_modules/discord.js/src/client/voice/ClientVoiceManager.js:45:12)
2020-02-17T01:48:30.403801+00:00 app[worker.1]: at VoiceChannel.join (/app/node_modules/discord.js/src/structures/VoiceChannel.js:130:30)
2020-02-17T01:48:30.403802+00:00 app[worker.1]: at Object.execute (/app/commands/play.js:31:64)
2020-02-17T01:48:30.404044+00:00 app[worker.1]: (node:4) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
2020-02-17T01:48:30.404052+00:00 app[worker.1]: (node:4) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
</anonymous>This is the code
const ytdl = require("ytdl-core");
module.exports = {
name: 'play',
description: 'initiates music methods of the bot',
execute(msg, args){
var servers = {};
function play(connection, msg){
var server = servers[msg.guild.id];
server.dispatcher = connection.playStream(ytdl(server.queue[0], {filter: "audioonly"}));
server.queue.shift();
server.dispatcher.on("end", function(){
if(server.queue[0]){
play(connection, msg);
}else{
connection.disconnect();
}
});
}
if(!args[1]) return msg.channel.send("you need to provide a link");
if(!msg.member.voiceChannel) return msg.channel.send("You must be in a voice channel to use this feature");
if(!servers[msg.guild.id]) servers[msg.guild.id] = {
queue: []
}
var server = servers[msg.guild.id];
server.queue.push(args[1]);
if(!msg.guild.voiceConnection) msg.member.voiceChannel.join().then(function(connection){
play(connection, msg);
})
}
}I have no idea what the issue is. I am using heroku to deploy if that matters at all.
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avfilter/vf_yadif : Fix handing of tiny images
29 mai 2021, par Michael Niedermayer -
missing audio of second video after combining video
27 mai 2021, par JohnTerryI am trying to add
xfadefilter and the command is working but audio of second video is missing in output video.

command is -


ffmpeg -i 1.mp4 -i 1.mp4 -filter_complex "[0:v]scale=480:360:force_original_aspect_ratio=decrease,pad=480:360:-1:-1,setsar=1,fps=30,format=yuv420p[v0];[1:v]scale=480:360:force_original_aspect_ratio=decrease,pad=480:360:-1:-1,setsar=1,fps=30,format=yuv420p[v1];
[v0][v1]xfade=transition=pixelize:duration=1:offset=7,format=yuv420p" -c:v libvpx-vp9 -crf 30 -b:v 0 -b:a 128k -c:a libopus -deadline good -cpu-used 8 output.webm


the full log is below-


ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration: --prefix= --prefix=/usr --disable-debug --disable-doc - 
-disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid -- 
enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable- 
libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype 
--enable-libmp3lame --enable-libnpp --enable-libopencore_amrnb -- 
enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-
sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.29.100
 Duration: 00:00:09.12, start: 0.000000, bitrate: 702 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 474x360, 568 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '2.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.29.100
 Duration: 00:00:08.75, start: 0.000000, bitrate: 2546 kb/s
 Stream #1:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 2416 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #1:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 (h264) -> scale (graph 0)
 Stream #1:0 (h264) -> scale (graph 0)
 format (graph 0) -> Stream #0:0 (libvpx-vp9)
 Stream #0:1 -> #0:1 (mp3 (mp3float) -> opus (libopus))
Press [q] to stop, [?] for help
[libvpx-vp9 @ 0x561afcf3a280] v1.7.0
Output #0, webm, to 'output.webm':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p, 480x360 [SAR 1:1 DAR 4:3], q=-1--1, 30 fps, 1k tbn, 30 tbc (default)
 Metadata:
 encoder : Lavc58.91.100 libvpx-vp9
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1(und): Audio: opus (libopus), 48000 Hz, stereo, flt, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 encoder : Lavc58.91.100 libopus
frame= 87 fps=0.0 q=0.0 size= 1kB time=00:00:03.19 bitrate= 2.1kbits/sframe= 157 fps=156 q=0.0 size= 171kB time=00:00:05.51 bitrate= 254.3kbits/sframe= 227 fps=150 q=0.0 size= 171kB time=00:00:07.85 bitrate= 178.5kbits/sframe= 265 fps=131 q=0.0 size= 171kB time=00:00:08.31 bitrate= 168.7kbits/sframe= 303 fps=120 q=0.0 size= 256kB time=00:00:09.30 bitrate= 225.5kbits/sframe= 341 fps=113 q=0.0 size= 256kB time=00:00:10.56 bitrate= 198.4kbits/sframe= 379 fps=107 q=0.0 size= 256kB time=00:00:11.83 bitrate= 177.2kbits/sframe= 416 fps=103 q=0.0 size= 256kB time=00:00:13.06 bitrate= 160.5kbits/sframe= 454 fps=100 q=0.0 size= 256kB time=00:00:14.33 bitrate= 146.3kbits/sframe= 472 fps= 93 q=0.0 Lsize= 1168kB time=00:00:15.73 bitrate= 608.2kbits/s speed=3.09x 
video:1036kB audio:125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.629681%


when using online url which has no audio getting this error-
getting this error-


ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
 configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libnpp --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://player.vimeo.com/external/183300180.sd.mp4?s=8d9b1561f39df586af49fe5ab105f57f5873854b&profile_id=164':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: mp42mp41isomavc1
 creation_time : 2016-09-19T12:39:02.000000Z
 Duration: 00:00:10.00, start: 0.000000, bitrate: 489 kb/s
 Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt470bg/smpte170m/bt470bg), 640x360 [SAR 1:1 DAR 16:9], 486 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc (default)
 Metadata:
 creation_time : 2016-09-19T12:39:02.000000Z
 handler_name : L-SMASH Video Handler
 encoder : AVC Coding
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'https://player.vimeo.com/external/166335878.sd.mp4?s=828bf6e8594fab383d7ee6bac40d3f247cc40af9&profile_id=164':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: mp42mp41isomavc1
 creation_time : 2016-05-12T09:34:11.000000Z
 Duration: 00:00:10.01, start: 0.000000, bitrate: 479 kb/s
 Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt470bg/smpte170m/bt470bg), 474x360 [SAR 1:1 DAR 79:60], 345 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc (default)
 Metadata:
 creation_time : 2016-05-12T09:34:11.000000Z
 handler_name : L-SMASH Video Handler
 encoder : AVC Coding
 Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 creation_time : 2016-05-12T09:34:11.000000Z
 handler_name : L-SMASH Audio Handler
Stream specifier ':a' in filtergraph description [0:v]scale=614:360:force_original_aspect_ratio=decrease,pad=614:360:-1:-1,setsar=1,fps=30,format=yuv420p[v0];[1:v]scale=614:360:force_original_aspect_ratio=decrease,pad=614:360:-1:-1,setsar=1,fps=30,format=yuv420p[v1];[v0][v1]xfade=transition=pixelize:duration=1:offset=8,format=yuv420p;[0:a][1:a]acrossfade=d=0 matches no streams.


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