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gentoo ~ # vlc -vvv -I http
VLC media player 1.1.0-pre4 The Luggage (revision exported)
[0x605408] main libvlc debug: VLC media player - 1.1.0-pre4 The Luggage
[0x605408] main libvlc debug: Copyright © 1996-2010 the VideoLAN team
[0x605408] main libvlc debug: revision exported
[0x605408] main libvlc debug: configured with ./configure '--prefix=/usr' '--host=x86_64-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--libdir=/usr/lib64' '--enable-a52' '--disable-aa' '--enable-faad' '--enable-alsa' '--disable-altivec' '--disable-asademux' '--disable-atmo' '--disable-bonjour' '--enable-fribidi' '--enable-vcd' '--disable-libcddb' '--enable-dbus' '--enable-dbus-control' '--disable-dirac' '--disable-directfb' '--disable-dc1394' '--disable-debug' '--enable-dca' '--disable-dvb' '--enable-dvdread' '--enable-dvdnav' '--disable-fb' '--enable-avformat' '--enable-swscale' '--enable-postproc' '--enable-flac' '--disable-fluidsynth' '--enable-fontconfig' '--disable-ggi' '--enable-gnomevfs' '--enable-gnutls' '--enable-httpd' '--disable-id3tag' '--disable-dv' '--disable-jack' '--disable-kate' '--without-kde-solid' '--disable-libass' '--disable-caca' '--enable-libgcrypt' '--enable-notify' '--enable-libproxy' '--disable-libtar' '--disable-tiger' '--disable-libv4l' '--enable-libv4l2' '--disable-lirc' '--enable-live555' '--disable-lua' '--enable-mkv' '--enable-mmx' '--disable-mod' '--enable-mad' '--enable-libmpeg2' '--enable-mtp' '--disable-mpc' '--enable-ncurses' '--enable-mozilla' '--with-mozilla-pkg=libxul' '--enable-ogg' '--enable-glx' '--enable-opengl' '--disable-optimize-memory' '--disable-oss' '--enable-png' '--disable-portaudio' '--disable-projectm' '--disable-pulse' '--disable-pvr' '--enable-qt4' '--disable-remoteosd' '--enable-realrtsp' '--enable-run-as-root' '--enable-smb' '--disable-schroedinger' '--enable-sdl' '--disable-sdl-image' '--disable-shine' '--disable-shout' '--disable-skins2' '--enable-speex' '--enable-sqlite' '--enable-sse' '--enable-svg' '--disable-svgalib' '--enable-taglib' '--enable-theora' '--enable-freetype' '--disable-twolame' '--enable-udev' '--disable-upnp' '--disable-v4l' '--enable-v4l2' '--enable-vcdx' '--enable-libva' '--enable-vlm' '--enable-vorbis' '--disable-loader' '--disable-wma-fixed' '--enable-x264' '--enable-xcb' '--enable-libxml2' '--enable-xosd' '--enable-xvideo' '--disable-zvbi' '--enable-telx' '--disable-snapshot' '--disable-growl' '--disable-optimizations' '--enable-fast-install' '--enable-sout' '--enable-avcodec' '--build=x86_64-pc-linux-gnu' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-pc-linux-gnu' 'CFLAGS=-mtune=core2 -march=core2 -O2 -msse4.1 -fomit-frame-pointer -pipe -ftracer' 'LDFLAGS=-Wl,-O1' 'CXXFLAGS=-mtune=core2 -march=core2 -O2 -msse4.1 -fomit-frame-pointer -pipe -ftracer'
[0x605408] main libvlc debug: translation test: code is "C"
[0x605408] main libvlc debug: checking plugin modules
[0x605408] main libvlc debug: loading plugins cache file /usr/lib64/vlc/plugins/plugins-04081e-7e8.dat
[0x605408] main libvlc debug: recursively browsing `/usr/lib64/vlc/plugins'
[0x605408] main libvlc debug: saving plugins cache /usr/lib64/vlc/plugins/plugins-04081e-7e8.dat
[0x605408] main libvlc debug: module bank initialized (360 modules)
[0x605408] main libvlc debug: opening config file (/root/.config/vlc/vlcrc)
[0x605408] main libvlc debug: CPU has capabilities MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4.1 FPU
[0x605408] main libvlc debug: looking for memcpy module: 3 candidates
[0x605408] main libvlc debug: using memcpy module "memcpymmxext"
[0x6dcd98] main input debug: Creating an input for '媒体库'
[0x6dcd98] main input debug: Input is a meta file: disabling unneeded options
[0x6dcd98] main input debug: using timeshift granularity of 50 MiB
[0x6dcd98] main input debug: using timeshift path '/tmp'
[0x6dcd98] main input debug: `file/xspf-open:///root/.local/share/vlc/ml.xspf' gives access `file' demux `xspf-open' path `/root/.local/share/vlc/ml.xspf'
[0x6dcd98] main input debug: creating demux: access='file' demux='xspf-open' path='/root/.local/share/vlc/ml.xspf'
[0x6e37e8] main demux debug: looking for access_demux module: 2 candidates
[0x6e37e8] main demux debug: no access_demux module matching "file" could be loaded
[0x6e37e8] main demux debug: TIMER module_need() : 0.509 ms - Total 0.509 ms / 1 intvls (Avg 0.509 ms)
[0x6dcd98] main input debug: creating access 'file' path='/root/.local/share/vlc/ml.xspf'
[0x6e7818] main access debug: looking for access module: 2 candidates
[0x6e7818] filesystem access debug: opening file `/root/.local/share/vlc/ml.xspf'
[0x6e7818] main access debug: using access module "filesystem"
[0x6e7818] main access debug: TIMER module_need() : 0.236 ms - Total 0.236 ms / 1 intvls (Avg 0.236 ms)
[0x6e7328] main stream debug: Using AStream*Stream
[0x6e7328] main stream debug: pre buffering
[0x6e7328] main stream debug: received first data after 0 ms
[0x6e7328] main stream debug: pre-buffering done 292 bytes in 0s - 20368 KiB/s
[0x6e7468] main stream debug: looking for stream_filter module: 5 candidates
[0x6e7468] main stream debug: no stream_filter module matching "any" could be loaded
[0x6e7468] main stream debug: TIMER module_need() : 0.379 ms - Total 0.379 ms / 1 intvls (Avg 0.379 ms)
[0x6e4e68] main stream debug: looking for stream_filter module: 1 candidate
[0x6e4e68] main stream debug: using stream_filter module "stream_filter_record"
[0x6e4e68] main stream debug: TIMER module_need() : 0.114 ms - Total 0.114 ms / 1 intvls (Avg 0.114 ms)
[0x6dcd98] main input debug: creating demux: access='file' demux='xspf-open' path='/root/.local/share/vlc/ml.xspf'
[0x6e4bd8] main demux debug: looking for demux module: 1 candidate
[0x6e4bd8] playlist demux debug: using XSPF playlist reader
[0x6e4bd8] main demux debug: using demux module "playlist"
[0x6e4bd8] main demux debug: TIMER module_need() : 0.196 ms - Total 0.196 ms / 1 intvls (Avg 0.196 ms)
[0x6f7cf8] main demux meta debug: looking for meta reader module: 1 candidate
[0x6f7cf8] main demux meta debug: no meta reader module matching "any" could be loaded
[0x6f7cf8] main demux meta debug: TIMER module_need() : 2.772 ms - Total 2.772 ms / 1 intvls (Avg 2.772 ms)
[0x6dcd98] main input debug: `file/xspf-open:///root/.local/share/vlc/ml.xspf' successfully opened
[0x6f5de8] main xml debug: looking for xml module: 2 candidates
[0x6f5de8] main xml debug: using xml module "xml"
[0x6f5de8] main xml debug: TIMER module_need() : 7.488 ms - Total 7.488 ms / 1 intvls (Avg 7.488 ms)
[0x6e4bd8] playlist demux debug: parsed 0 tracks successfully
[0x6f5de8] main xml debug: removing module "xml"
[0x6dcd98] main input debug: EOF reached
[0x6e4bd8] main demux debug: removing module "playlist"
[0x6e4e68] main stream debug: removing module "stream_filter_record"
[0x6e7818] main access debug: removing module "filesystem"
[0x6dcd98] main input debug: TIMER input launching for '媒体库' : 4.647 ms - Total 4.647 ms / 1 intvls (Avg 4.647 ms)
[0x6f5de8] main interface debug: looking for interface module: 1 candidate
[0x6f5de8] main interface debug: using interface module "hotkeys"
[0x6f5de8] main interface debug: TIMER module_need() : 0.208 ms - Total 0.208 ms / 1 intvls (Avg 0.208 ms)
[0x6e13e8] main interface debug: looking for interface module: 1 candidate
Blocked: call to unsetenv("DBUS_ACTIVATION_ADDRESS")
Blocked: call to unsetenv("DBUS_ACTIVATION_BUS_TYPE")
Warning: call to signal(13, 0x1)
[0x6f22c8] main playlist debug: Activated
[0x6e13e8] main interface debug: using interface module "inhibit"
[0x6e13e8] main interface debug: TIMER module_need() : 1.575 ms - Total 1.575 ms / 1 intvls (Avg 1.575 ms)
[0x6df278] main interface debug: looking for interface module: 1 candidate
[0x6df278] main interface debug: using interface module "signals"
[0x6df278] main interface debug: TIMER module_need() : 0.233 ms - Total 0.233 ms / 1 intvls (Avg 0.233 ms)
[0x6e2598] main interface debug: looking for interface module: 1 candidate
[0x6e2598] main interface debug: using interface module "globalhotkeys"
[0x6e2598] main interface debug: TIMER module_need() : 1.097 ms - Total 1.097 ms / 1 intvls (Avg 1.097 ms)
[0x703598] main interface debug: looking for interface module: 0 candidates
[0x703598] main interface debug: no interface module matched "http"
[0x703598] main interface debug: TIMER module_need() : 0.069 ms - Total 0.069 ms / 1 intvls (Avg 0.069 ms)
[0x703598] main interface error: no suitable interface module
[0x605408] main libvlc error: interface "default" initialization failed
[0x605408] main libvlc debug: deactivating the playlist
[0x6f22c8] main playlist debug: Deactivate
[0x703598] main playlist export debug: saving 媒体库 to file /root/.local/share/vlc/ml.xspf
[0x703598] main playlist export debug: looking for playlist export module: 1 candidate
[0x703598] main playlist export debug: using playlist export module "export"
[0x703598] main playlist export debug: TIMER module_need() : 0.162 ms - Total 0.162 ms / 1 intvls (Avg 0.162 ms)
[0x703598] main playlist export debug: removing module "export"
[0x6f22c8] main playlist debug: Deactivated
[0x605408] main libvlc debug: removing all services discovery tasks
[0x605408] main libvlc debug: removing all interfaces
[0x6e2598] main interface debug: removing module "globalhotkeys"
[0x6df278] main interface debug: removing module "signals"
[0x6e13e8] main interface debug: removing module "inhibit"
[0x6f5de8] main interface debug: removing module "hotkeys"
[0x6f22c8] main playlist debug: destroying
[0x605408] main libvlc debug: TIMER ML Load : Total 12.537 ms / 1 intvls (Avg 12.537 ms)
[0x605408] main libvlc debug: TIMER ML Dump : Total 0.265 ms / 1 intvls (Avg 0.265 ms)
[0x605408] main libvlc debug: removing stats
[0x605408] main libvlc debug: removing module "memcpymmxext"
gentoo ~ #

Do not run VLC as root.