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Autres articles (62)
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L’agrémenter visuellement
10 avril 2011MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté. -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)
Sur d’autres sites (12566)
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Android video unplayable at iOS
21 février 2017, par Atif ImranI’ve found that videos with codec
H.264, MPEG-4 HE AAC V2have no problem with my code here. But when I use a video of codecH.264, AAC(Sent from Android device) the videos are again black. Now my question is how do I convert a video to iOS playable codec. -
WebM live streaming via DASH
23 février 2017, par ewackI am following the instructions here to try to make WebM live streaming via DASH. My input is from an Axis camera and it is streaming as h264 encoding. I am using node to spin up the ffmpeg processes. I am able to create the .hdr file and the .chk files. The .mpd file is even created but it’s empty and I get an error saying :
Could not write header for output file #0 (incorrect codec parameters ?): Operation not permittedStream mapping: Stream #0:0 -> #0:0 (copy)Here’s all of my code :
var express = require('express');
spawn = require('child_process').spawn;
var app = express();
app.use(express.static(__dirname + '/public'));
app.listen(8080);
console.log("Running on Port 8080");
var ffmpeg1 = spawn('ffmpeg', [
'-y',
//video
'-i', 'rtsp://admin:password@192.168.1.54:554/axis-media/media.amp?videocodec=h264&resolution=1280x720',
'-map', '0:0',
'-pix_fmt', 'yuv420p',
'-color_range', '2',
'-c:v', 'libvpx-vp9',
'-s', '1280x720',
'-keyint_min', '25',
'-g', '25',
// //VP9_LIVE_PARAMS
'-speed', '6',
'-tile-columns', '4',
'-frame-parallel', '1',
'-threads', '8',
'-static-thresh', '0',
'-max-intra-rate', '300',
'-deadline', 'realtime',
'-lag-in-frames', '0',
'-error-resilient', '1',
'-f', 'webm_chunk',
'-header', 'public/glass_360.hdr',
'-chunk_start_index', '1',
'public/glass_360_%d.chk',
]);
setTimeout(()=> {
var ffmpeg2 = spawn('ffmpeg', [
'-y',
'-f', 'webm_dash_manifest',
'-live', '1',
'-i', 'public/glass_360.hdr',
'-c', 'copy',
'-map', '0',
'-r', '25',
'-framerate', '25',
'-f', 'webm_dash_manifest',
'-live', '1',
'-adaptation_sets', '"id=0,streams=0"',
'-chunk_start_index', '1',
'-chunk_duration_ms', '2000',
'-time_shift_buffer_depth', '7200',
'-minimum_update_period', '7200',
'public/glass_live_manifest.mpd'
]);
ffmpeg2.stdout.on('data',
function (data) {
console.log('ff2std: ' + data);
}
);
ffmpeg2.stderr.on('data',
function (data) {
console.log('ff2err: ' + data);
}
);
}, 5000);
ffmpeg1.stdout.on('data',
function (data) {
console.log('ff1std: ' + data);
}
);
ffmpeg1.stderr.on('data',
function (data) {
console.log('ff1err: ' + data);
}
);Here is all of my output :
Running on Port 8080
ff1err: ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
ff1err: 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
ff1err: Input #0, rtsp, from 'rtsp://admin:password@192.168.1.54:554/axis-media/media.amp?videocodec=h264&resolution=1280x720':
Metadata:
title : Session streamed with GStreamer
comment : rtsp-server
Duration: N/A, start: 0.033344
ff1err: , bitrate: N/A
Stream #0:0: Video: h264 (Main), yuvj420p(pc, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 180k tbc
ff1err: [swscaler @ 0x7f8df281bc00] deprecated pixel format used, make sure you did set range correctly
ff1err: [libvpx-vp9 @ 0x7f8df2800600] v1.6.1
ff1err: Output #0, webm_chunk, to 'public/glass_360_%d.chk':
Metadata:
title : Session streamed with GStreamer
comment : rtsp-server
encoder : Lavf57.56.101
ff1err: Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p(pc), 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 200 kb/s, 25 fps, 1k tbn, 25 tbc
Metadata:
encoder : Lavc57.64.101 libvpx-vp9
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> vp9 (libvpx-vp9))
Press [q] to stop, [?] for help
ff1err: frame= 10 fps=0.0 q=0.0 size=N/A time=00:00:00.36 bitrate=N/A speed=0.71x
ff1err: frame= 25 fps= 25 q=0.0 size=N/A time=00:00:00.96 bitrate=N/A speed=0.946x
ff1err: frame= 40 fps= 26 q=0.0 size=N/A time=00:00:01.56 bitrate=N/A speed=1.03x
ff1err: frame= 55 fps= 27 q=0.0 size=N/A time=00:00:02.16 bitrate=N/A speed=1.07x
ff1err: frame= 70 fps= 28 q=0.0 size=N/A time=00:00:02.76 bitrate=N/A speed=1.09x
ff1err: frame= 85 fps= 28 q=0.0 size=N/A time=00:00:03.36 bitrate=N/A speed=1.11x
ff2err: ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
ff2err: 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
ff2err: [webm_dash_manifest @ 0x7fbc5b80b400] Could not find codec parameters for stream 0 (Video: vp9, none, 1280x720): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
ff2err: Input #0, webm_dash_manifest, from 'public/glass_360.hdr':
Metadata:
title : Session streamed with GStreamer
encoder : Lavf57.56.101
Duration: N/A, bitrate: N/A
Stream #0:0: Video: vp9, none, 1280x720
ff2err: , SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
Metadata:
webm_dash_manifest_file_name: glass_360.hdr
webm_dash_manifest_track_number: 1
ff2err: Could not write header for output file #0 (incorrect codec parameters ?): Operation not permittedStream mapping:
Stream #0:0 -> #0:0 (copy)
ff2err: Last message repeated 1 times
ff1err: frame= 101 fps= 29 q=0.0 size=N/A time=00:00:04.00 bitrate=N/A speed=1.13x
ff1err: frame= 116 fps= 29 q=0.0 size=N/A time=00:00:04.60 bitrate=N/A speed=1.14x
ff1err: frame= 131 fps= 29 q=0.0 size=N/A time=00:00:05.20 bitrate=N/A speed=1.15x
ff1err: frame= 146 fps= 29 q=0.0 size=N/A time=00:00:05.80 bitrate=N/A speed=1.15x
ff1err: frame= 161 fps= 29 q=0.0 size=N/A time=00:00:06.40 bitrate=N/A speed=1.15x
ff1err: frame= 177 fps= 29 q=0.0 size=N/A time=00:00:07.04 bitrate=N/A speed=1.16x
ff1err: frame= 192 fps= 29 q=0.0 size=N/A time=00:00:07.64 bitrate=N/A speed=1.16x
ff1err: frame= 207 fps= 29 q=0.0 size=N/A time=00:00:08.24 bitrate=N/A speed=1.16x
ff1err: frame= 222 fps= 29 q=0.0 size=N/A time=00:00:08.84 bitrate=N/A speed=1.17x
ff1err: frame= 237 fps= 29 q=0.0 size=N/A time=00:00:09.44 bitrate=N/A speed=1.17x
ff1err: frame= 252 fps= 29 q=0.0 size=N/A time=00:00:10.04 bitrate=N/A speed=1.17xWhy is ffmpeg creating an empty .mpd file ?
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Add multiple audio over a background audio using ffmpeg
26 février 2017, par Vivek BhattI am trying to create an audio file which will have a base audio and multiple other audios over it.
And also when the overlayed audio plays, the background audio should be mute or in lower volume.For eg :
There is a song A.mp3. Over this song, i want to add multiple other audios (1.mp3, 2.mp3, 3.mp3 ......) at a particular time period. Let say, 1.mp3 plays at 5th sec to 8th sec, 2 .mp3 plays at 10th sec to 12th sec and so on.
Also this should be added as an overlay such that, background sound will always be playing and when the overlayed audio plays, the background audio should be muted or slowed in volume.I tried with ffmeg library but haven’t found any solution yet.
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