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#7 Ambience
16 octobre 2011, par
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Autres articles (93)
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MediaSPIP v0.2
21 juin 2013, parMediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
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Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
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MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)
Sur d’autres sites (15967)
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Do I need multiple video files in different resolutions to use MPEG DASH ?
2 février 2023, par Gentil AlysonI'm trying to use Django REST Framework to serve .mpd files. When the user uploads a video, the server creates the MPD and the chunk files. However, I can't seem to able to make it work. I've tried using python-ffmpeg-video-streaming, but the client which is using dash.js to play the video will get only one bitrate (480p). I've also tried running this command
'ffmpeg -i {self.file.path} -map 0 -map 0 -c:a aac -c:v libx264 -b:v:0 800k -b:v:1 300k -var_stream_map "v:0,name:800k v:1,name:300k" -f dash -dash_segment_type mp4 -single_file 1 {file_dir}/dash.mpd'usingos.systemfrom Python, but then the player gets stuck at buffering.



<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT2M30.5S" maxsegmentduration="PT5.0S" minbuffertime="PT16.6S">
 <programinformation>
 </programinformation>
 <servicedescription>
 </servicedescription>
 <period start="PT0.0S">
 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" framerate="30000/1001" maxwidth="1280" maxheight="720" par="16:9" lang="und">
 <representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="800000" width="1280" height="720" sar="1:1">
 <baseurl>dash-stream0.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
 <initialization range="0-854"></initialization>
 <segmenturl mediarange="855-190364" indexrange="855-906"></segmenturl>
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 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
 <baseurl>dash-stream1.mp4</baseurl>
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 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" framerate="30000/1001" maxwidth="1280" maxheight="720" par="16:9" lang="und">
 <representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="300000" width="1280" height="720" sar="1:1">
 <baseurl>dash-stream2.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
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 </representation>
 </adaptationset>
 <adaptationset contenttype="audio" startwithsap="1" segmentalignment="true" bitstreamswitching="true" lang="eng">
 <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audiosamplingrate="44100">
 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
 <baseurl>dash-stream3.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
 <initialization range="0-764"></initialization>
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 <segmenturl mediarange="2443752-2446358" indexrange="2443752-2443803"></segmenturl>
 </segmentlist>
 </representation>
 </adaptationset>
 </period>
</mpd>




<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT5M24.4S" maxsegmentduration="PT5.0S" minbuffertime="PT10.8S">
 <programinformation>
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 <servicedescription>
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Do I really need multiple video files in different resolutions ? If not, then how would I go about making the necessary files ? Thanks in advance !


-
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 ?
-
How to merge mp4 audio dash fragment with another audio
18 mars 2019, par mosvovI have 1 audio file from dash stream
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file_191282-377206_header.mp4': Metadata:
major_brand : iso6
minor_version : 1
compatible_brands: mp42dashmsdhmsixiso6avc1isom
creation_time : 2016-04-29T11:04:26.000000Z Duration: 00:00:30.02, start: 14.997333, bitrate: 49 kb/s
Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 48 kb/s (default)Also in exiftool output :
Movie Data Size : 180193
Movie Data Offset : 6388I try to merge with another audio and save metadata info like Movie Data Size/Offset and start/duration time.
I try with ffmpeg/MP4Box commands like :MP4Box -new -add file_191282-377206_header.mp4 -add out000.mp4
ffmpeg -i file_191282-377206_header.mp4 -i out000.mp4 -codec copy -shortest output.mp4
ffmpeg -i file_191282-377206_header.mp4 -i out000.mp4 -filter_complex amerge -ac 2 -c:a aac output.mp4All the time information erased or changed.
So question is how to merge 2 audio files inside mp4 and not change Movie Size/Offset and start/duration time ?
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