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Autres articles (97)
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Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
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 (...)
Sur d’autres sites (7174)
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How to get rtp(javacv ffmpeg) stream from VLC as client
15 avril 2015, par SezerttI am trying to play rtp stream from vlc player which I created using javacv. Here is the code :
FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber("rtsp://10.6.0.147:554/ufirststream");
frameGrabber.start(); // First I take another stream
FFmpegFrameRecorder frameRecorder = new FFmpegFrameRecorder("rtp://239.31.31.69:4433", frameGrabber.getImageWidth(), frameGrabber.getImageHeight());
frameRecorder.setFormat("rtp");
frameRecorder.setPixelFormat(AV_PIX_FMT_YUV420P);
frameRecorder.setVideoCodec(AV_CODEC_ID_MPEG2VIDEO); <-- AV_CODEC_ID_H264
frameRecorder.setFrameRate(25);
frameRecorder.setVideoBitrate(1024); <--1024*1024*2
frameRecorder.start();
while (true) {
frameRecorder.record(frameGrabber.grab()); //grab from stream, stream with rtp
}If I choose my codec as AV_CODEC_ID_MPEG2VIDEO I can play the stream from VLC using rtp ://239.31.31.69:4433 with open network.
If I increase the quality using setVideoBitrate(1024*1024*2) the stream lags too much and if I decrease the quality is so bad.
I want to use AV_CODEC_ID_H264 as my codec to fasten things with better quality but i can’t play the stream from VLC getting error :
SDP required A description in SDP format is required to receive the RTP stream. Note that rtp :// URIs cannot work with dynamic RTP payload format (96).
I tried to get sdp using wireshark and then I realized rtp stream doesn’t have sdp :) so I tried to create my own sdp like this
c=IN IP4 239.31.31.69
m=video 4433 RTP/AVP 96
a=rtpmap:96 H264/90000and this
v=0
c=IN IP4 239.31.31.69
a=recvonly
t=0 0
m=video 4433 RTP/AVP 99
a=rtpmap:99 H264/90000
a=fmtp:99 packetization-mode=1;profile-level-id=42c01e;sprop-parameter sets=Z0LAHukBQHsg,aM4G4g==;but both seems to fail similar to this
> core debug: adding item `asf.sdp' ( file:///C:/Users/Sezer/Desktop/asf.sdp )
core debug: processing request item: asf.sdp, node: null, skip: 0
core debug: rebuilding array of current - root Playlist
core debug: rebuild done - 7 items, index 6
core debug: starting playback of the new playlist item
core debug: resyncing on asf.sdp
core debug: asf.sdp is at 6
core debug: creating new input thread
core debug: Creating an input for 'asf.sdp'
core debug: Creating an input for 'asf.sdp'
core debug: requesting art for asf.sdp
core debug: using timeshift granularity of 50 MiB, in path 'C:\Users\Sezer\AppData\Local\Temp'
core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' gives access `file' demux `' path `/C:/Users/Sezer/Desktop/asf.sdp'
core debug: specified demux `any'
core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'
core debug: looking for access_demux module matching "file": 12 candidates
core debug: looking for meta fetcher module matching "any": 1 candidates
core debug: no access_demux modules matched
core debug: creating access 'file' location='/C:/Users/Sezer/Desktop/asf.sdp', path='C:\Users\Sezer\Desktop\asf.sdp'
core debug: looking for access module matching "file": 21 candidates
filesystem debug: opening file `C:\Users\Sezer\Desktop\asf.sdp'
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
core debug: using access module "filesystem"
core debug: Using stream method for AStream*
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
core debug: starting pre-buffering
core debug: received first data after 0 ms
core debug: pre-buffering done 193 bytes in 0s - 188476 KiB/s
core debug: looking for stream_filter module matching "any": 6 candidates
core debug: no stream_filter modules matched
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
core debug: looking for stream_filter module matching "record": 6 candidates
core debug: using stream_filter module "record"
core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'
core debug: looking for demux module matching "any": 65 candidates
live555 debug: version 2014.07.25
live555 debug: RTP subsession 'video/H264'
core debug: selecting program id=0
core debug: adding item `file.sdp' ( file:///C:/Users/Sezer/Desktop/file.sdp )
live555 debug: setup start: 0.000000 stop:0.000000
live555 debug: play start: 0.000000 stop:0.000000
core debug: using demux module "live555"
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
core debug: no meta fetcher modules matched
core debug: looking for a subtitle file in C:\Users\Sezer\Desktop\
core debug: searching art for asf.sdp
core debug: looking for art finder module matching "any": 2 candidates
core debug: looking for decoder module matching "any": 43 candidates
avcodec debug: CPU flags: 0x010053db
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
avcodec debug: trying to use direct rendering
avcodec debug: allowing 4 thread(s) for decoding
avcodec warning: threaded frame decoding is not compatible with DXVA2, disabled
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
core debug: meta ok for (null), need to fetch art
core debug: Creating an input for 'file.sdp'
avcodec debug: avcodec codec (H264 - MPEG-4 AVC (part 10)) started
avcodec debug: using slice thread mode with 4 threads
core debug: using decoder module "avcodec"
core debug: looking for meta fetcher module matching "any": 1 candidates
core debug: looking for packetizer module matching "any": 23 candidates
core debug: using packetizer module "packetizer_h264"
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
core debug: looking for meta reader module matching "any": 2 candidates
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\reader
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader\filename.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
core debug: no meta fetcher modules matched
core debug: searching art for asf.sdp
core debug: looking for art finder module matching "any": 2 candidates
core debug: no meta reader modules matched
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' successfully opened
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
core debug: meta ok for (null), need to fetch art
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
core debug: no art finder modules matched
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
core debug: looking for meta fetcher module matching "any": 1 candidates
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
core debug: using meta fetcher module "lua"
core debug: removing module "lua"
core debug: searching art for asf.sdp
core debug: looking for art finder module matching "any": 2 candidates
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
qt4 debug: IM: Setting an input
core debug: no art finder modules matched
core debug: looking for meta fetcher module matching "any": 1 candidates
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
core debug: no meta fetcher modules matched
core debug: searching art for file.sdp
core debug: looking for art finder module matching "any": 2 candidates
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
core debug: no art finder modules matched
core debug: art not found for asf.sdp
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
core debug: no art finder modules matched
core debug: looking for meta fetcher module matching "any": 1 candidates
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
core debug: using meta fetcher module "lua"
core debug: removing module "lua"
core debug: searching art for asf.sdp
core debug: looking for art finder module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
core debug: no art finder modules matched
core debug: art not found for asf.sdp
core debug: looking for meta fetcher module matching "any": 1 candidates
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
core debug: using meta fetcher module "lua"
core debug: removing module "lua"
core debug: searching art for file.sdp
core debug: looking for art finder module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
core debug: no art finder modules matched
core debug: art not found for file.sdpCan you lead me to the right direction ? What should I do to get fair quality and no lag using rtp ?
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drawbox : error when evaluating the expression 'max'
11 mai 2017, par PHP DeveloperI try use the command :
/usr/bin/ffmpeg -i uploads/14940964561.mp4 -vf "drawbox=x=0:y=0:w=1000:h=1000:color=white@0.2:t=max" uploads/output.mp4
Output error
ffmpeg version 2.4.3-1ubuntu1~trusty6 Copyright (c) 2000-2014 the FFmpeg developers
built on Nov 22 2014 17:07:19 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: --prefix=/usr --extra-version='1ubuntu1~trusty6' --build-suffix=-ffmpeg --toolchain=hardened --extra-cflags= --extra-cxxflags= --libdir=/usr/lib/i386-l
inux-gnu --shlibdir=/usr/lib/i386-linux-gnu --incdir=/usr/include/i386-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth
--enable-fontconfig --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-lib
freetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-li
brtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-li
bwavpack --enable-libwebp --enable-opengl --enable-x11grab --enable-libxvid --enable-libx265 --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --
enable-frei0r --enable-libx264 --enable-libsoxr --enable-openal --enable-libopencv
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 1.100 / 56. 1.100
libavformat 56. 4.101 / 56. 4.101
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 1.100 / 5. 1.100
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 0.100 / 53. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '14942588091.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.4.101
Duration: 00:00:08.00, start: 0.000000, bitrate: 350 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 347 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
[Parsed_drawbox_0 @ 0x856b8e0] [Eval @ 0xbf9ae638] Undefined constant or missing '(' in 'max'
Last message repeated 5 times
[Parsed_drawbox_0 @ 0x856b8e0] Error when evaluating the expression 'max'
[Parsed_drawbox_0 @ 0x856b8e0] Failed to configure input pad on Parsed_drawbox_0
Error opening filters!This is message the error correct.
Previously, a message and code is wrong. I’m sorry !Message error :
I use the Ubuntu 32 bits, but the command in Windows 10 work.
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Collect decoded audio from libav as doubles
29 juillet 2015, par gapcI’m currently trying to gather decoded audio data (from multiple formats) to perform certain audio manipulations (using a *.wav file for testing).
I have a class that handles all the decoding via FFmpeg libav. If I extract the data as unit8_t into a vector, and
for (int i = 0; i < bytevector.size(); i++) {
fwrite(&bytevector[i], sizeof (uint8_t), 1, outfile2);
}to a raw file and play it via
play -t raw -r 44100 -b16 -c 1 -e signed sound.raw
it sounds perfectly fine.However, how is it possible to have all the correct information as doubles when the file for example is 2 bytes per sample and the
frame->data
information is given as uint8_t ? The wav files I’ve tested are 44100/16bits/1 channel. (I already have code that will change uint8_t* into a double)Opening the same files with Scilab will show half the size of the byte vector as doubles.
wav file in Scilab as an array of doubles shows :
-0.1, -0.099, -0.098, ..., 0.099, +0.1versus byte vector :
51, 243, 84, 243, 117, 243, ...Can 51 and 243 really form a double ? Any suggestions on how to get past this issue ?
Code below for reference :
while ((av_read_frame(formatContext, &readingPacket)) == 0) {
if (readingPacket.stream_index == audioStreamIdx) {
AVPacket decodingPacket = readingPacket;
while (decodingPacket.size > 0) {
int gotFrame = 0;
int result = avcodec_decode_audio4(context, frame, &gotFrame, &decodingPacket);
if (result < 0) {
break;
}
decoded = FFMIN(result, decodingPacket.size);
if (gotFrame) {
data_size = (av_get_bytes_per_sample(context->sample_fmt));
if (data_size < 0) {
}
// Only for 1 channel temporarily
for (int i = 0; i < frame->nb_samples; i++) {
for (int ch = 0; ch < context->channels; ch++) {
for (int j = 0; j < data_size; j++) {
bytevector.push_back(*(frame->data[ch] + data_size * i + j));
}
}
}
} else {
decodingPacket.size = 0;
decodingPacket.data = NULL;
}
decodingPacket.size -= result;
decodingPacket.data += result;
}
}
av_free_packet(&readingPacket);
}