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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (77)
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...) -
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. -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...)
Sur d’autres sites (9153)
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Anomalie #3862 : .spip_logo
22 novembre 2016, par J. Alberto ZAMBRANObonjour,
"est-ce un problème sur un squelettes-dist de SPIP ou bien un squelettes
déjà modifié ? "
Les deux mon capitaine :-)
Je fais un site pour une amie, je prends spip et je fait quelques
modifications (j’allège) à partir des squelettes-dist. L’entête de la dist
me vas parfait, mais...
Je fais une page "catalogue" (rubrique) pour afficher les articles, et je
me lance dans une flexbox grids
<http://codepen.io/raphaelgoetter/pen/mzKrh?editors=110> qui m’afficherait
le titre et le logo de l’article. Juste modifier la classe dans le
squelette de la rubrique et le tour est joué : -
Adding A New System To The Game Music Website
1er août 2012, par Multimedia Mike — GeneralAt first, I was planning to just make a little website where users could install a Chrome browser extension and play music from old 8-bit NES games. But, like many software projects, the goal sort of ballooned. I created a website where users can easily play old video game music. It doesn’t cover too many systems yet, but I have had individual requests to add just about every system you can think of.
The craziest part is that I know it’s possible to represent most of the systems. Eventually, it would be great to reach Chipamp parity (a combination plugin for Winamp that packages together plugins for many of these chiptunes). But there is a process to all of this. I have taken to defining a number of phases that are required to get a new system covered.
Phase 0 informally involves marveling at the obscurity of some of the console systems for which chiptune collections have evolved. WonderSwan ? Sharp X68000 ? PC-88 ? I may be viewing this through a terribly Ameri-centric lens. I’ve at least heard of the ZX Spectrum and the Amstrad CPC even if I’ve never seen either.
No matter. The goal is to get all their chiptunes cataloged and playable.
Phase 1 : Finding A Player
The first step is to find a bit of open source code that can play a particular format. If it’s a library that can handle many formats, like Game Music Emu or Audio Overload SDK, even better (probably). The specific open source license isn’t a big concern for me. I’m almost certain that some of the libraries that SaltyGME currently mixes are somehow incompatible, license-wise. I’ll worry about it when I encounter someone who A) cares, and B) is in a position to do something about it. Historical preservation comes first, and these software libraries aren’t getting any younger (I’m finding some that haven’t been touched in a decade).Phase 2 : Test Program
The next phase is to create a basic test bench program that sends a music file into the library, generates a buffer of audio, and shoves it out to the speakers via PulseAudio’s simple API (people like to rip on PulseAudio, but its simple API really lives up to its name and requires pages less boilerplate code to play a few samples than ALSA).Phase 3 : Plug Into Web Player
After successfully creating the test bench and understanding exactly which source files need to be built, the next phase is to hook it up to the main SaltyGME program via the ad-hoc plugin API I developed. This API requires that a player backend can, at the very least, initialize itself based on a buffer of bytes and generate audio samples into an array of 16-bit numbers. The API also provides functions for managing files with multiple tracks and toggling individual voices/channels if the library supports such a feature. Having the test bench application written beforehand usually smooths out this step.But really, I’m just getting started.
Phase 4 : Collecting A Song Corpus
Then there is the matter of staging a collection of songs for a given system. It seems like it would just be a matter of finding a large collection of songs for a given format, downloading them in bulk, and mirroring them. Honestly, that’s the easy part. People who are interested in this stuff have been lovingly curating massive collections of these songs for years (see SNESmusic.org for one of the best examples, and they also host a torrent of all their music for really quick and easy hoarding).
In my drive to make this game music website more useful for normal people, the goal is to extract as much metadata as possible to make searching better, and to package the data so that it’s as convenient as possible for users. Whenever I seek to add a new format to the collection, this is the phase where I invariably find that I have to fundamentally modify some of the assumptions I originally made in the player.First, there were the NES Sound Format (NSF) files, the original format I wanted to play. These are files that have any number of songs packed into a single file. Playback libraries expose APIs to jump to individual tracks. So the player was designed around that. Game Boy GBS files also fall into this category but present a different challenge vis-à-vis metadata, addressed in the next phase.
Then, there were the SPC files. Each SPC file is its own song and multiple SPC files are commonly bundled as RAR files. Not wanting to deal with RAR, or any format where I interacted with a general compression API to pull a few files out, I created a custom resource format (inspired by so many I have studied and documented) and compressed it with a simpler compression API. I also had to modify some of the player’s assumptions to deal with this archive format. Genesis VGMs, bundled either in .zip or .7z, followed the same model as SPC in RAR.
Then it was suggested that I attempt to bring SaltyGME closer to feature parity with Chipamp, rather than just being a Chrome browser frontend for Game Music Emu. When I studied the Portable Sound Format (PSF), I realized it didn’t fit into the player model I already had. PSF uses a sort of shared library model for code execution and I developed another resource archive format to cope with it. So that covers quite a few formats.
One more architecture challenge arose when I started to study one of the prevailing metadata formats, explained in the next phase.
Phase 5 : Metadata
Finally, for the collections to really be useful, I need to harvest that juicy metadata for search and presentation.I have created a series of programs and scripts to scrape metadata out of these music files and store it all in a database that drives the website and search engine. I recognize that it’s no good to have a large corpus of songs with minimal metadata and while importing bulk quantities of music, the scripts harshly reject songs that have too little metadata.
Again, challenges abound. One of the biggest challenges I’m facing is the peculiar quasi-freeform metadata format that emerged as .m3u that takes a form similar to :
################################################################# # # GRADIUS2 # (c) KONAMI by Furukawa Motoaki, IKACHAN # #################################################################
nemesis2.kss::KSS,62,[Nemesis2] (Opening),2:23,,0
nemesis2.kss::KSS,61,[Nemesis2] (Start),7,,0
nemesis2.kss::KSS,43,[Nemesis2] (Air Battle),34,0-
nemesis2.kss::KSS,44,[Nemesis2] (1st. BGM),51,0-
[...]A lot of file formats (including Game Boy GBS mentioned earlier) store their metadata separately using this format. I have some ideas about tools I can use to help me process this data but I’m pretty sure each one will require some manual intervention.
As alluded to in phase 4, .m3u presents another architectural challenge : Notice the second field in the CSV .m3u data. That’s a track number. A player can’t expect every track in a bundled chiptune file to be valid, nor to be in any particular order. Thus, I needed to alter the architecture once more to take this into account. However, instead of modifying the SaltyGME player, I simply extended the metadata database to include a playback order which, by default, is the same as the track order but can also accommodate this new issue. This also has the bonus of providing a facility to exclude playback of certain tracks. This comes in handy for many PSF archives which tend to include files that only provide support for other files and aren’t meant to be played on their own.
Bright Side
The reward for all of this effort is that the data lands in a proper database in the end. None of it goes back into the chiptune files themselves. This makes further modification easier as all of the data that is indexed and presented on the site comes from the database. Somewhere down the road, I should probably create an API for accessing this metadata. -
Cannot play local RTP stream
24 janvier 2020, par gdogg371I have been struggling along with this issue now for a while, but am making good progress. I now have a 4k transport stream running using the below command line arguments for VLC :
vlc --ffmpeg-hw --avcodec-hw=any dshow:// :dshow-vdev="Video (00 Pro Capture HDMI 4K+)" :dshow-adev="Audio (2- 00 Pro Capture HDMI 4K+)" :dshow-threads=8 :dshow-aspect-ratio=16\:9 :dshow-size="3840x2160" :dshow-pixel_format=yuv444p16le :dshow-tune=film :dshow-preset=lossless :dshow-profile=main10 show-vcodec=hevc_nvenc :dshow-fps=50 :dshow-crf=0 :dshow-acodec=mp4a :dshow-stereo-mode=5 :dshow-force-surround-sound=0 :dshow-ab=128 :dshow-samplerate=44100 :no-dshow-config :live-caching=3000 --sout "#transcode{venc=ffmpeg,vcodec=mpgv,threads=8,aspect=16:9,width=3840,height=2160,fps=50,acodec=a52,ab=1500,channels=6,samplerate=48000,soverlay}:rtp{dst=239.255.0.1,port=5004,mux=ts}"I can access the rtp stream on the same PC as I am running the stream from with the below :
vlc -vvv rtp://@239.255.0.1:5004However, if I try the same commands on a different computer, connected via Ethernet to the same network, the client VLC session just hangs. I have included the log below with the verbosity set to debug. Can anyone spot anything in here suggesting why the stream won’t play ?
-- logger module started --
main debug: VLC media player - 3.0.8 Vetinari
main debug: Copyright © 1996-2019 the VideoLAN team
main debug: revision 3.0.8-0-gf350b6b5a7
main debug: configured with ../extras/package/win32/../../../configure '--enable-update-check' '--enable-lua' '--enable-faad' '--enable-flac' '--enable-theora' '--enable-avcodec' '--enable-merge-ffmpeg' '--enable-dca' '--enable-mpc' '--enable-libass' '--enable-schroedinger' '--enable-realrtsp' '--enable-live555' '--enable-dvdread' '--enable-shout' '--enable-goom' '--enable-caca' '--enable-qt' '--enable-skins2' '--enable-sse' '--enable-mmx' '--enable-libcddb' '--enable-zvbi' '--disable-telx' '--enable-nls' '--host=x86_64-w64-mingw32' '--with-breakpad=https://win.crashes.videolan.org' 'host_alias=x86_64-w64-mingw32' 'PKG_CONFIG_LIBDIR=/home/jenkins/workspace/vlc-release/windows/vlc-release-win32-x64/contrib/x86_64-w64-mingw32/lib/pkgconfig'
main debug: using multimedia timers as clock source
main debug: min period: 1 ms, max period: 1000000 ms
main debug: searching plug-in modules
main debug: loading plugins cache file D:\VLC\plugins\plugins.dat
main debug: recursively browsing `D:\VLC\plugins'
main error: stale plugins cache: modified D:\VLC\plugins\access\libaccess_concat_plugin.dll
main error: stale plugins cache: modified D:\VLC\plugins\access\libaccess_imem_plugin.dll
....
....
....
main error: stale plugins cache: modified D:\VLC\plugins\visualization\libgoom_plugin.dll
main error: stale plugins cache: modified D:\VLC\plugins\visualization\libprojectm_plugin.dll
main error: stale plugins cache: modified D:\VLC\plugins\visualization\libvisual_plugin.dll
main debug: plug-ins loaded: 494 modules
main debug: opening config file (C:\Users\cg371\AppData\Roaming\vlc\vlcrc)
main debug: looking for logger module matching "any": 2 candidates
file debug: opening logfile `D:\VLC\Log.txt'
main debug: using logger module "file"
main debug: translation test: code is "en_GB"
main debug: looking for keystore module matching "memory": 3 candidates
main debug: using keystore module "memory"
main debug: CPU has capabilities MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 FPU
main debug: Creating an input for 'Media Library'
main debug: Input is a meta file: disabling unneeded options
main debug: using timeshift granularity of 50 MiB
main debug: using timeshift path: C:\Users\cg371\AppData\Local\Temp
main debug: `file/directory:///C:/Users/cg371/AppData/Roaming/vlc/ml.xspf' gives access `file' demux `directory' path `/C:/Users/cg371/AppData/Roaming/vlc/ml.xspf'
main debug: creating demux: access='file' demux='directory' location='/C:/Users/cg371/AppData/Roaming/vlc/ml.xspf' file='C:\Users\cg371\AppData\Roaming\vlc\ml.xspf'
main debug: looking for access_demux module matching "file": 15 candidates
main debug: no access_demux modules matched
main debug: creating access: file:///C:/Users/cg371/AppData/Roaming/vlc/ml.xspf
main debug: (path: C:\Users\cg371\AppData\Roaming\vlc\ml.xspf)
main debug: looking for access module matching "file": 26 candidates
main debug: using access module "filesystem"
main debug: looking for stream_filter module matching "prefetch,cache_read": 24 candidates
cache_read debug: Using stream method for AStream*
cache_read debug: starting pre-buffering
cache_read debug: received first data after 1 ms
cache_read debug: pre-buffering done 304 bytes in 0s - 296 KiB/s
main debug: using stream_filter module "cache_read"
main debug: looking for stream_filter module matching "any": 24 candidates
playlist debug: using XSPF playlist reader
main debug: using stream_filter module "playlist"
main debug: stream filter added to 00000266f6927700
main debug: looking for stream_filter module matching "any": 24 candidates
main debug: no stream_filter modules matched
main debug: looking for stream_directory module matching "any": 1 candidates
main debug: no stream_directory modules matched
main debug: attachment of directory-extractor failed for file:///C:/Users/cg371/AppData/Roaming/vlc/ml.xspf
main debug: looking for stream_filter module matching "record": 24 candidates
main debug: using stream_filter module "record"
main debug: creating demux: access='file' demux='directory' location='/C:/Users/cg371/AppData/Roaming/vlc/ml.xspf' file='C:\Users\cg371\AppData\Roaming\vlc\ml.xspf'
main debug: looking for demux module matching "directory": 55 candidates
main debug: using demux module "directory"
main debug: looking for meta reader module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\cg371\AppData\Roaming\vlc\lua\meta\reader
lua debug: Trying Lua scripts in D:\VLC\lua\meta\reader
lua debug: Trying Lua playlist script D:\VLC\lua\meta\reader\filename.luac
main debug: no meta reader modules matched
main debug: `file/directory:///C:/Users/cg371/AppData/Roaming/vlc/ml.xspf' successfully opened
main debug: looking for xml reader module matching "any": 1 candidates
main debug: using xml reader module "xml"
main debug: EOF reached
main debug: removing module "directory"
main debug: removing module "record"
main debug: removing module "playlist"
main debug: removing module "cache_read"
main debug: removing module "filesystem"
main debug: creating audio output
main debug: looking for audio output module matching "any": 6 candidates
mmdevice debug: using default device
mmdevice debug: display name changed: VLC media player (LibVLC 3.0.8)
mmdevice debug: version 2 session control unavailable
mmdevice debug: volume from -65.250000 dB to +0.000000 dB with 0.031250 dB increments
main debug: using audio output module "mmdevice"
main debug: keeping audio output
main debug: looking for interface module matching "hotkeys,none": 16 candidates
main debug: using interface module "hotkeys"
main debug: looking for interface module matching "globalhotkeys,none": 16 candidates
main debug: using interface module "win32"
main: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
main debug: looking for interface module matching "any": 16 candidates
main debug: looking for extension module matching "any": 1 candidates
lua debug: Opening Lua Extension module
lua debug: Trying Lua scripts in C:\Users\cg371\AppData\Roaming\vlc\lua\extensions
lua debug: Trying Lua scripts in D:\VLC\lua\extensions
lua debug: Trying Lua playlist script D:\VLC\lua\extensions\VLSub.luac
lua debug: Scanning Lua script D:\VLC\lua\extensions\VLSub.luac
lua debug: Script D:\VLC\lua\extensions\VLSub.luac has the following capability flags: 0x5
main debug: using extension module "lua"
main debug: using interface module "qt"
main debug: processing request item: null, node: Playlist, skip: 0
main debug: rebuilding array of current - root Playlist
main debug: rebuild done - 1 items, index -1
main debug: starting playback of new item
main debug: resyncing on rtp://239.255.0.1:5004
main debug: rtp://239.255.0.1:5004 is at 0
main debug: creating new input thread
main debug: Creating an input for 'rtp://239.255.0.1:5004'
main debug: requesting art for new input thread
main debug: using timeshift granularity of 50 MiB
main debug: using timeshift path: C:\Users\cg371\AppData\Local\Temp
main debug: `rtp://@239.255.0.1:5004' gives access `rtp' demux `any' path `@239.255.0.1:5004'
main debug: creating demux: access='rtp' demux='any' location='@239.255.0.1:5004' file='\\@239.255.0.1:5004'
main debug: looking for access_demux module matching "rtp": 15 candidates
main debug: net: opening 239.255.0.1 datagram port 5004
qt debug: IM: Setting an input
main debug: looking for meta fetcher module matching "any": 1 candidates
lua debug: Trying Lua scripts in C:\Users\cg371\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in D:\VLC\lua\meta\fetcher
main debug: no meta fetcher modules matched
main debug: looking for art finder module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\cg371\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in D:\VLC\lua\meta\art
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: skipping script (unmatched scope) D:\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\01_googleimage.luac
lua debug: skipping script (unmatched scope) D:\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\02_frenchtv.luac
lua debug: skipping script (unmatched scope) D:\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\03_lastfm.luac
main debug: using access_demux module "rtp"
main debug: looking for meta reader module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\cg371\AppData\Roaming\vlc\lua\meta\reader
lua debug: Trying Lua scripts in D:\VLC\lua\meta\reader
lua debug: Trying Lua playlist script D:\VLC\lua\meta\reader\filename.luac
lua debug: skipping script (unmatched scope) D:\VLC\lua\meta\art\03_lastfm.luac
main debug: no art finder modules matched
main debug: no meta reader modules matched
main debug: `rtp://@239.255.0.1:5004' successfully opened
main debug: looking for meta fetcher module matching "any": 1 candidates
lua debug: Trying Lua scripts in C:\Users\cg371\AppData\Roaming\vlc\lua\meta\fetcher
lua debug: Trying Lua scripts in D:\VLC\lua\meta\fetcher
main debug: no meta fetcher modules matched
main debug: looking for art finder module matching "any": 2 candidates
lua debug: Trying Lua scripts in C:\Users\cg371\AppData\Roaming\vlc\lua\meta\art
lua debug: Trying Lua scripts in D:\VLC\lua\meta\art
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\00_musicbrainz.luac
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\01_googleimage.luac
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\02_frenchtv.luac
lua debug: Trying Lua playlist script D:\VLC\lua\meta\art\03_lastfm.luac
main debug: no art finder modules matched
main debug: exiting
main debug: exiting
main debug: no exit handler
main debug: removing all interfaces
main debug: removing module "qt"
main debug: deactivating the playlist
main debug: incoming request - stopping current input
main debug: removing module "rtp"
main debug: dead input
main debug: nothing to play
main debug: removing module "mmdevice"
qt debug: requesting exit...
qt debug: waiting for UI thread...
qt debug: IM: Deleting the input
qt debug: QApp exec() finished
qt debug: Video is not needed anymore
qt debug: Killing extension dialog provider
qt debug: ExtensionsDialogProvider is quitting...
main debug: removing module "lua"
main debug: removing module "win32"
main debug: removing module "hotkeys"
main debug: destroying
main debug: saving media library to file C:\Users\cg371\AppData\Roaming\vlc\ml.xspf.tmp14968
main debug: looking for playlist export module matching "export-xspf": 4 candidates
main debug: using playlist export module "export"
main debug: removing module "export"
main debug: deleting item `Media Library'
main debug: deleting item `rtp://239.255.0.1:5004'
main debug: deleting item `Playlist'
main debug: removing module "memory"
-- logger module stopped --
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