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Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (49)
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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 -
ANNEXE : Les plugins utilisés spécifiquement pour la ferme
5 mars 2010, parLe site central/maître de la ferme a besoin d’utiliser plusieurs plugins supplémentaires vis à vis des canaux pour son bon fonctionnement. le plugin Gestion de la mutualisation ; le plugin inscription3 pour gérer les inscriptions et les demandes de création d’instance de mutualisation dès l’inscription des utilisateurs ; le plugin verifier qui fournit une API de vérification des champs (utilisé par inscription3) ; le plugin champs extras v2 nécessité par inscription3 (...)
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Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)
Sur d’autres sites (8770)
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ffmpeg : simple RTMP streaming
2 avril 2013, par sajadI am trying to launch up a rtmp transcoder server using ffmpeg ; that receives udp MPEG-TS streams as input, transcodes it ; and generates an rtmp output to a URL, that can be accessed by users to receive and play the rtmp stream. All these are expected to be performed in a LAN and the output be accessed by all users.
1) First I don't know where the URL should point to. Is it enought to specify the IP of the system and some optional port ? Is it neccessary that a program should be listening on that port ?
2) How I can play the stream on the URL ?
I use a linux ubuntu machine whith IP=10.1.1.229 and I want to transcode multicast stream on this URL :
udp://@224.10.1.1:2001.here is the command used to transcode input stream and generate rtmp url "rtmp ://10.1.1.229:2020".
ffmpeg -y -f mpegts -i "udp://@224.10.1.1:2001" -re -vcodec libx264 -maxrate 700k -r 25 -s 640x360 -deinterlace -acodec libfaac -ab 64k -ac 1 -ar 44100 -f flv "rtmp://10.1.1.229:2020"and here is the command by which I am trying to play rtmp stream :
ffplay rtmp://10.1.1.229:2020Any guidance would be helpfull. Thank you.
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Problems video playing in some android devices (version 4+) but not in others
5 juin 2014, par anquegifollowing the settings for video in android developers, http://developer.android.com/guide/appendix/media-formats.html I encoded a video using ffmpeg like this :
ffmpeg -i gravityTrailer.mp4 -y -f mp4 -vcodec libx264 -profile:v baseline -acodec aac -strict -2 -profile:a aac_low -b:v 500k -ar 44100 -b:a 128k -ac 2 -r 30 -s 480x360 output_hq.mp4which corresponds on sd highquality in table 2 from android developers (link above).
Then i put this video in a server and use the class android.media.MediaPlayer to reproduce it from that URL like this
https://cloudapp.somedomain.com/bmftvideos/output_hq.mp4
The problem is that the video is played on android version 4+
you can see the video on :
LG G2,
Sony xperia Syou cannot see the video on :
Samsung galaxy S4,
BQ (spanish) aquaris 4.5And I don not know why
this is the ffmpeg output :
ffmpeg version 1.2.6 Copyright (c) 2000-2014 the FFmpeg developers
built on Mar 5 2014 08:21:01 with gcc 4.8.2 (GCC) 20131212 (Red Hat 4.8.2-7)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --enable-bzlib --disable-crystalhd --enable-frei0r --enable-gnutls --enable-libass --enable-libcelt --enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x14e5ba0] stream 0, timescale not set
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x14e5ba0] max_analyze_duration 5000000 reached at 5013333 microseconds
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'gravityTrailer.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2013-12-01 03:59:56
genre : Trailer
artist : Warner Bros.
title : Gravity - 2K Trailer
encoder : HandBrake 0.9.9 2013051800
date : 2013
Duration: 00:02:27.07, start: 0.000000, bitrate: 20296 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 2048x858, 20149 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
Metadata:
creation_time : 2013-12-01 03:59:56
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 153 kb/s
Metadata:
creation_time : 2013-12-01 03:59:56
Stream #0:2: Video: mjpeg, yuvj420p, 102x150 [SAR 72:72 DAR 17:25], 90k tbr, 90k tbn, 90k tbc
[libx264 @ 0x1667680] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x1667680] profile Constrained Baseline, level 3.0
[libx264 @ 0x1667680] 264 - core 130 r2282 1db4621 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'output_hq.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
date : 2013
genre : Trailer
artist : Warner Bros.
title : Gravity - 2K Trailer
encoder : Lavf54.63.104
Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 480x360, q=-1--1, 500 kb/s, 15360 tbn, 30 tbc
Metadata:
creation_time : 2013-12-01 03:59:56
Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
Metadata:
creation_time : 2013-12-01 03:59:56
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Stream #0:1 -> #0:1 (aac -> aac)
Press [q] to stop, [?] for help
frame= 4410 fps= 65 q=-1.0 Lsize= 11154kB time=00:02:27.07 bitrate= 621.3kbits/s dup=885 drop=0
video:9062kB audio:1969kB subtitle:0 global headers:0kB muxing overhead 1.115392%
[libx264 @ 0x1667680] frame I:186 Avg QP:28.41 size: 4446
[libx264 @ 0x1667680] frame P:4224 Avg QP:29.20 size: 2001
[libx264 @ 0x1667680] mb I I16..4: 75.5% 0.0% 24.5%
[libx264 @ 0x1667680] mb P I16..4: 7.5% 0.0% 3.6% P16..4: 23.1% 6.2% 1.8% 0.0% 0.0% skip:57.7%
[libx264 @ 0x1667680] final ratefactor: 27.96
[libx264 @ 0x1667680] coded y,uvDC,uvAC intra: 24.0% 31.9% 8.6% inter: 7.4% 7.6% 0.6%
[libx264 @ 0x1667680] i16 v,h,dc,p: 58% 15% 13% 14%
[libx264 @ 0x1667680] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 9% 27% 7% 6% 8% 5% 7% 3%
[libx264 @ 0x1667680] i8c dc,h,v,p: 80% 7% 12% 2%
[libx264 @ 0x1667680] ref P L0: 84.7% 9.4% 5.9%
[libx264 @ 0x1667680] kb/s:504.98 -
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>
 <segmenturl mediarange="190365-448322" indexrange="190365-190416"></segmenturl>
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 <segmenturl mediarange="4905001-5046627" indexrange="4905001-4905052"></segmenturl>
 </segmentlist>
 </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-stream1.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
 <initialization range="0-764"></initialization>
 <segmenturl mediarange="765-82409" indexrange="765-816"></segmenturl>
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 <segmenturl mediarange="2443752-2446358" indexrange="2443752-2443803"></segmenturl>
 </segmentlist>
 </representation>
 </adaptationset>
 <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">
 <initialization range="0-854"></initialization>
 <segmenturl mediarange="855-117134" indexrange="855-906"></segmenturl>
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 </segmentlist>
 </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>
 <segmenturl mediarange="765-82409" indexrange="765-816"></segmenturl>
 <segmenturl mediarange="82410-163592" indexrange="82410-82461"></segmenturl>
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 <segmenturl mediarange="2362062-2443751" indexrange="2362062-2362113"></segmenturl>
 <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>
 </programinformation>
 <servicedescription>
 </servicedescription>
 <period start="PT0.0S">
 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" framerate="30/1" maxwidth="854" maxheight="480" par="16:9" lang="und">
 <representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="750000" width="854" height="480" sar="1280:1281">
 <segmenttemplate timescale="15360" initialization="dash_init_$RepresentationID$.m4s" media="dash_chunk_$RepresentationID$_$Number%05d$.m4s" startnumber="1">
 <segmenttimeline>
 <s t="0" d="95744"></s>
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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 !


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