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Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (9876)
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Error : spawn process ffmpeg ChildProcessError
10 juin 2019, par KarnonI wanted to make a program like OBS simply.
My ideal code behavior is to create a child process in Node.js and execute FFMPEG commands to send a webcam stream to yourtube live RTMP server. However, the actual behavior is caused by an error in the child-process-promise module used in node.js.
I’ve checked several questions, but I don’t have enough experience to understand them, and I hope there’s a clear solution.
I guess it was because I couldn’t find the command address of FFMPEG in the Node environment. Or is calling from the socket environment a problem ?
I checked that the FFMPEG command works in a Windows prompt environment.
※ Note : FFMPEG environment variables are registered.
Environment :
Window10,node.js,ffmpegThe code took advantage of a simple WebSocket example.
When I first investigated, I thought that the only way to do this was to use "fluent-effmpeg."
I tried "fluent-ffmpeg" but I couldn’t get my laptop webcam up and running in Windows environments as a parameter for the "fluent-ffmppeg" command.
I’ve also thought about using WebRTC, but I think it’s not for personal use because it’s a P2P connection. (I also saw how to connect a peer connection to a WebRTC server like Janus, but I didn’t have enough references to understand it.)
Below is the code of the problem.
const SocketIO = require("socket.io");
const ffmpeg = require("fluent-ffmpeg");
const spawn = require("child-process-promise").spawn;
module.exports = server => {
const io = SocketIO(server, { path: "/socket.io" });
io.on("connection", socket => {
const req = socket.request;
const ip = req.headers["x-forwarded-for"] || req.connection.remoteAddress;
console.log("새로운 클라이언트 접속!", ip, socket.id, req.ip);
socket.on("disconnect", () => {
console.log("클라이언트 접속해제", ip, socket.id);
clearInterval(socket.interval);
});
socket.on("error", error => {
console.error(error);
});
socket.on("reply", data => {
console.log(data);
ffmpeg_command();
});
});
function ffmpeg_command() {
let arg = [
"-f",
"lavfi",
"-i",
"anullsrc=r=16000:cl=mono",
"-f",
"dshow",
"-ac",
"2",
"-i",
"video='HP Truevision HD'",
"-s",
"1280x720",
"-r",
"10",
"-vcodec",
"libx264",
"-pix_fmt",
"yuv420p",
"-preset",
"ultrafast",
"-r",
"25",
"-g",
"20",
"-b:v",
"2500k",
"-codec:a",
"libmp3lame",
"-ar",
"44100",
"-threads",
"6",
"-b:a",
"11025",
"-bufsize",
"512k",
"-f",
"flv",
"rtmp://a.rtmp.youtube.com/live2/8dfu-69k0-dxyw-896q"
];
spawn("ffmpeg", arg).catch(e => {
console.log(e);
});
}
};Here’s the error : The expected result is that your webcam is working and YouTube live streaming is successful.
{ ChildProcessError: `ffmpeg -f lavfi -i anullsrc=r=16000:cl=mono -f dshow -ac 2 -i video='HP Truevision HD' -s 1280x720 -r 10 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/8dfu-69k0-dxyw-896q` failed with code 1
at ChildProcess.<anonymous> (C:\Users\Tricky\Desktop\Work\ESC\ESC_temp\node_modules\child-process-promise\lib\index.js:132:23)
at ChildProcess.emit (events.js:182:13)
at ChildProcess.cp.emit (C:\Users\Tricky\Desktop\Work\ESC\ESC_temp\node_modules\child-process-promise\node_modules\cross-spawn\lib\enoent.js:40:29)
at maybeClose (internal/child_process.js:962:16)
at Socket.stream.socket.on (internal/child_process.js:381:11)
at Socket.emit (events.js:182:13)
at Pipe._handle.close (net.js:606:12)
name: 'ChildProcessError',
code: 1,
childProcess:
ChildProcess {
_events: { error: [Function], close: [Function] },
_eventsCount: 2,
_maxListeners: undefined,
_closesNeeded: 3,
_closesGot: 3,
connected: false,
signalCode: null,
exitCode: 1,
killed: false,
spawnfile: 'ffmpeg',
_handle: null,
spawnargs:
[ 'ffmpeg',
'-f',
'lavfi',
'-i',
'anullsrc=r=16000:cl=mono',
'-f',
'dshow',
'-ac',
'2',
'-i',
'video=\'HP Truevision HD\'',
'-s',
'1280x720',
'-r',
'10',
'-vcodec',
'libx264',
'-pix_fmt',
'yuv420p',
'-preset',
'ultrafast',
'-r',
'25',
'-g',
'20',
'-b:v',
'2500k',
'-codec:a',
'libmp3lame',
'-ar',
'44100',
'-threads',
'6',
'-b:a',
'11025',
'-bufsize',
'512k',
'-f',
'flv',
'rtmp://a.rtmp.youtube.com/live2/8dfu-69k0-dxyw-896q' ],
pid: 18928,
stdin:
Socket {
connecting: false,
_hadError: false,
_handle: null,
_parent: null,
_host: null,
_readableState: [ReadableState],
readable: false,
_events: [Object],
_eventsCount: 1,
_maxListeners: undefined,
_writableState: [WritableState],
writable: false,
allowHalfOpen: false,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
server: null,
_server: null,
[Symbol(asyncId)]: 132,
[Symbol(lastWriteQueueSize)]: 0,
[Symbol(timeout)]: null,
[Symbol(kBytesRead)]: 0,
[Symbol(kBytesWritten)]: 0 },
stdout:
Socket {
connecting: false,
_hadError: false,
_handle: null,
_parent: null,
_host: null,
_readableState: [ReadableState],
readable: false,
_events: [Object],
_eventsCount: 2,
_maxListeners: undefined,
_writableState: [WritableState],
writable: false,
allowHalfOpen: false,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
server: null,
_server: null,
write: [Function: writeAfterFIN],
[Symbol(asyncId)]: 133,
[Symbol(lastWriteQueueSize)]: 0,
[Symbol(timeout)]: null,
[Symbol(kBytesRead)]: 0,
[Symbol(kBytesWritten)]: 0 },
stderr:
Socket {
connecting: false,
_hadError: false,
_handle: null,
_parent: null,
_host: null,
_readableState: [ReadableState],
readable: false,
_events: [Object],
_eventsCount: 2,
_maxListeners: undefined,
_writableState: [WritableState],
writable: false,
allowHalfOpen: false,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
server: null,
_server: null,
write: [Function: writeAfterFIN],
[Symbol(asyncId)]: 134,
[Symbol(lastWriteQueueSize)]: 0,
[Symbol(timeout)]: null,
[Symbol(kBytesRead)]: 1615,
[Symbol(kBytesWritten)]: 0 },
stdio: [ [Socket], [Socket], [Socket] ],
emit: [Function] },
stdout: undefined,
stderr: undefined }
</anonymous> -
Node.js Error : spawn process ffmpeg ChildProcessError
12 juin 2019, par KarnonI wanted to make a program like OBS simply.
My ideal code behavior is to create a child process in Node.js and execute FFMPEG commands to send a webcam stream to yourtube live RTMP server. However, the actual behavior is caused by an error in the child-process-promise module used in node.js.
I’ve checked several questions, but I don’t have enough experience to understand them, and I hope there’s a clear solution.
I guess it was because I couldn’t find the command address of FFMPEG in the Node environment. Or is calling from the socket environment a problem ?
I checked that the FFMPEG command works in a Windows prompt environment.
※ Note : FFMPEG environment variables are registered.
Environment :
Window10,node.js,ffmpegThe code took advantage of a simple WebSocket example.
When I first investigated, I thought that the only way to do this was to use "fluent-effmpeg."
I tried "fluent-ffmpeg" but I couldn’t get my laptop webcam up and running in Windows environments as a parameter for the "fluent-ffmppeg" command.
I’ve also thought about using WebRTC, but I think it’s not for personal use because it’s a P2P connection. (I also saw how to connect a peer connection to a WebRTC server like Janus, but I didn’t have enough references to understand it.)
Below is the code of the problem.
const SocketIO = require("socket.io");
const ffmpeg = require("fluent-ffmpeg");
const spawn = require("child-process-promise").spawn;
module.exports = server => {
const io = SocketIO(server, { path: "/socket.io" });
io.on("connection", socket => {
const req = socket.request;
const ip = req.headers["x-forwarded-for"] || req.connection.remoteAddress;
console.log("새로운 클라이언트 접속!", ip, socket.id, req.ip);
socket.on("disconnect", () => {
console.log("클라이언트 접속해제", ip, socket.id);
clearInterval(socket.interval);
});
socket.on("error", error => {
console.error(error);
});
socket.on("reply", data => {
console.log(data);
ffmpeg_command();
});
});
function ffmpeg_command() {
let arg = [
"-f",
"lavfi",
"-i",
"anullsrc=r=16000:cl=mono",
"-f",
"dshow",
"-ac",
"2",
"-i",
"video='HP Truevision HD'",
"-s",
"1280x720",
"-r",
"10",
"-vcodec",
"libx264",
"-pix_fmt",
"yuv420p",
"-preset",
"ultrafast",
"-r",
"25",
"-g",
"20",
"-b:v",
"2500k",
"-codec:a",
"libmp3lame",
"-ar",
"44100",
"-threads",
"6",
"-b:a",
"11025",
"-bufsize",
"512k",
"-f",
"flv",
"rtmp://a.rtmp.youtube.com/live2/8dfu-69k0-dxyw-896q"
];
spawn("ffmpeg", arg).catch(e => {
console.log(e);
});
}
};Here’s the error : The expected result is that your webcam is working and YouTube live streaming is successful.
{ ChildProcessError: `ffmpeg -f lavfi -i anullsrc=r=16000:cl=mono -f dshow -ac 2 -i video='HP Truevision HD' -s 1280x720 -r 10 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://a.rtmp.youtube.com/live2/8dfu-69k0-dxyw-896q` failed with code 1
at ChildProcess.<anonymous> (C:\Users\Tricky\Desktop\Work\ESC\ESC_temp\node_modules\child-process-promise\lib\index.js:132:23)
at ChildProcess.emit (events.js:182:13)
at ChildProcess.cp.emit (C:\Users\Tricky\Desktop\Work\ESC\ESC_temp\node_modules\child-process-promise\node_modules\cross-spawn\lib\enoent.js:40:29)
at maybeClose (internal/child_process.js:962:16)
at Socket.stream.socket.on (internal/child_process.js:381:11)
at Socket.emit (events.js:182:13)
at Pipe._handle.close (net.js:606:12)
name: 'ChildProcessError',
code: 1,
childProcess:
ChildProcess {
_events: { error: [Function], close: [Function] },
_eventsCount: 2,
_maxListeners: undefined,
_closesNeeded: 3,
_closesGot: 3,
connected: false,
signalCode: null,
exitCode: 1,
killed: false,
spawnfile: 'ffmpeg',
_handle: null,
spawnargs:
[ 'ffmpeg',
'-f',
'lavfi',
'-i',
'anullsrc=r=16000:cl=mono',
'-f',
'dshow',
'-ac',
'2',
'-i',
'video=\'HP Truevision HD\'',
'-s',
'1280x720',
'-r',
'10',
'-vcodec',
'libx264',
'-pix_fmt',
'yuv420p',
'-preset',
'ultrafast',
'-r',
'25',
'-g',
'20',
'-b:v',
'2500k',
'-codec:a',
'libmp3lame',
'-ar',
'44100',
'-threads',
'6',
'-b:a',
'11025',
'-bufsize',
'512k',
'-f',
'flv',
'rtmp://a.rtmp.youtube.com/live2/8dfu-69k0-dxyw-896q' ],
pid: 18928,
stdin:
Socket {
connecting: false,
_hadError: false,
_handle: null,
_parent: null,
_host: null,
_readableState: [ReadableState],
readable: false,
_events: [Object],
_eventsCount: 1,
_maxListeners: undefined,
_writableState: [WritableState],
writable: false,
allowHalfOpen: false,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
server: null,
_server: null,
[Symbol(asyncId)]: 132,
[Symbol(lastWriteQueueSize)]: 0,
[Symbol(timeout)]: null,
[Symbol(kBytesRead)]: 0,
[Symbol(kBytesWritten)]: 0 },
stdout:
Socket {
connecting: false,
_hadError: false,
_handle: null,
_parent: null,
_host: null,
_readableState: [ReadableState],
readable: false,
_events: [Object],
_eventsCount: 2,
_maxListeners: undefined,
_writableState: [WritableState],
writable: false,
allowHalfOpen: false,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
server: null,
_server: null,
write: [Function: writeAfterFIN],
[Symbol(asyncId)]: 133,
[Symbol(lastWriteQueueSize)]: 0,
[Symbol(timeout)]: null,
[Symbol(kBytesRead)]: 0,
[Symbol(kBytesWritten)]: 0 },
stderr:
Socket {
connecting: false,
_hadError: false,
_handle: null,
_parent: null,
_host: null,
_readableState: [ReadableState],
readable: false,
_events: [Object],
_eventsCount: 2,
_maxListeners: undefined,
_writableState: [WritableState],
writable: false,
allowHalfOpen: false,
_sockname: null,
_pendingData: null,
_pendingEncoding: '',
server: null,
_server: null,
write: [Function: writeAfterFIN],
[Symbol(asyncId)]: 134,
[Symbol(lastWriteQueueSize)]: 0,
[Symbol(timeout)]: null,
[Symbol(kBytesRead)]: 1615,
[Symbol(kBytesWritten)]: 0 },
stdio: [ [Socket], [Socket], [Socket] ],
emit: [Function] },
stdout: undefined,
stderr: undefined }
</anonymous> -
FFMpeg and max bitrate
26 septembre 2019, par Aurelien StrideFor a personal project, using AV1 codec, I have a bitrate constraint for a video to 88kbps, with choosen video bitrate at 66kbps and mono audio bitrate at 22kbps.
I currently use this command :
ffmpeg -i input.mp4 -c:v libaom-av1 -strict -2 -b:v 66150 -c:a libfdk_aac -ar 22050 -b:a 22050 -ac 1 -maxrate 66150 -bufsize 66150 -vf scale=720:-1 -movflags +faststart output.mp4However, my final video has a 95kbps bitrate :
Duration : 00:01:09.73, start : 0.000000, bitrate : 95 kb/s
Stream #0:0(und) : Video : av1 (Main) (av01 / 0x31307661), yuv420p(tv, progressive), 720x302, 69 kb/s, 24 fps, 24 tbr, 12288 tbn, 12288 tbc (default)
Stream #0:1(und) : Audio : aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 22 kb/s (default)
Is there a method to validate my need ? Is it normal that 66+22>88kbps ?
Regards,
EDIT 1 : as @Gyan suggested, I’ve tried to reduce -bufsize parameter, but I still have a too high bitrate. The most working way is to set video bitrate -b:v to 50kbps, but it gives poorer image...
ffmpeg -i input.mp4 -c:v libaom-av1 -strict -2 -b:v 50k -c:a libfdk_aac -ar 22050 -b:a 22050 -ac 1 -minrate 33075 -maxrate 66150 -bufsize 44100 -vf scale=-1:360 -movflags +faststart -threads 1 output.mp4Any idea to limit overhead, if overhead is in cause ?
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