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• VLC Ubuntu : Problems converting rstp streaming into http streaming

  16 janvier 2019, par Gorka Sanz Monllor

  I am trying to convert in a Linux Ubuntu Machine a rstp stream into a http stream, so I execute the following comand :

  vlc -vvv -Idummy rtsp://**************************************transportmode=unicast --sout #transcode{vcodec=MJPG,venc=ffmpeg{strict=1}}:standard{access=http{mime=multipart/x-mixed-replace;boundary=--7b3cc56e5f51db803f790dad720ed50a},mux=mpjpeg,dst=:8080/} --run-time= 300 

  vlc ://quit

  and it doesn’t work. The output is the following :

  root@f139da580fd9:/# vlc -vvv -Idummy rtsp://*********Streaming/Channels/101?transportmode=unicast --sout #transcode{vcodec=MJPG,venc=ffmpeg{strict=1}}:standard{access=ht                  tp{mime=multipart/x-mixed-replace;boundary=--7b3cc56e5f51db803f790dad720ed50a},mux=mpjpeg,dst=:8080/} --run-time= 300 vlc://quit
  
  
  
  VLC media player 2.2.2 Weatherwax (revision 2.2.2-0-g6259d80)
  
  [0000000000a9c178] core libvlc debug: VLC media player - 2.2.2 Weatherwax
  
  [0000000000a9c178] core libvlc debug: Copyright © 1996-2016 the VideoLAN team
  
  [0000000000a9c178] core libvlc debug: revision 2.2.2-0-g6259d80
  
  [0000000000a9c178] core libvlc debug: configured with ./configure  '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${pr                  efix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--disable-silent-rules' '--libdir=${prefix}/lib/x86_64-linux-gnu' '--libexecdir=${prefix}/lib/x86_64-linux-gnu' '--disable-main                  tainer-mode' '--disable-dependency-tracking' '--config-cache' '--disable-update-check' '--enable-fast-install' '--docdir=/usr/share/doc/vlc-data' '--libdir=/usr/lib' '--with-binary-version=                  2.2.2-5ubuntu0.16.04.4' '--enable-a52' '--enable-aa' '--enable-bluray' '--enable-bonjour' '--enable-caca' '--enable-chromaprint' '--enable-dbus' '--enable-dca' '--enable-directfb' '--enable                  -dvbpsi' '--enable-dvdnav' '--enable-faad' '--enable-flac' '--enable-fluidsynth' '--enable-freerdp' '--enable-freetype' '--enable-fribidi' '--disable-gles1' '--enable-gles2' '--enable-gnutl                  s' '--enable-jack' '--enable-kate' '--enable-libass' '--enable-libmpeg2' '--enable-libxml2' '--enable-lirc' '--enable-live555' '--enable-mad' '--enable-mkv' '--enable-mod' '--enable-mpc' '-                  -enable-mtp' '--enable-mux_ogg' '--enable-ncurses' '--enable-notify' '--enable-ogg' '--enable-opus' '--enable-pulse' '--enable-qt' '--enable-realrtsp' '--enable-samplerate' '--enable-schroe                  dinger' '--enable-sdl' '--enable-sdl-image' '--enable-sftp' '--enable-shine' '--enable-shout' '--enable-skins2' '--enable-speex' '--enable-svg' '--enable-svgdec' '--enable-taglib' '--enable                  -theora' '--enable-twolame' '--enable-upnp' '--enable-vcdx' '--enable-vdpau' '--enable-vnc' '--enable-vorbis' '--enable-x264' '--enable-x265' '--enable-zvbi' '--with-kde-solid=/usr/share/kd                  e4/apps/solid/actions/' '--disable-decklink' '--disable-dxva2' '--disable-fdkaac' '--disable-gnomevfs' '--disable-goom' '--disable-libtar' '--disable-mfx' '--disable-opencv' '--disable-proj                  ectm' '--disable-sndio' '--disable-telx' '--disable-vpx' '--disable-vsxu' '--disable-wasapi' '--enable-alsa' '--enable-atmo' '--enable-dc1394' '--enable-dv1394' '--enable-linsys' '--enable-                  omxil' '--enable-udev' '--enable-v4l2' '--enable-libva' '--enable-vcd' '--enable-smbclient' '--disable-oss' '--enable-crystalhd' '--enable-mmx' '--enable-sse' '--disable-neon' '--disable-al                  tivec' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,--as-needed' 'CPPFLAGS=-W                  date-time -D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' 'OBJCFLAGS=-g -O2 -fstack-protector-strong -Wformat -Werror=format-security'
  
  [0000000000a9c178] core libvlc debug: searching plug-in modules
  
  [0000000000a9c178] core libvlc debug: loading plugins cache file /usr/lib/vlc/plugins/plugins.dat
  
  [0000000000a9c178] core libvlc debug: recursively browsing `/usr/lib/vlc/plugins'
  
  [0000000000a9c178] core libvlc debug: saving plugins cache /usr/lib/vlc/plugins/plugins.dat
  
  [0000000000a9c178] core libvlc debug: plug-ins loaded: 459 modules
  
  [0000000000a9c178] core libvlc debug: opening config file (/root/.config/vlc/vlcrc)

  I am trying to connect to it from an external browser as

  http://********:8080/

  I have checked in the Linux Server that there is not any server running. Any idea on why it does not work ?

• Ghosting in colour channels

  24 mai 2024, par Blikpils

  This seems like a very specific question so i hope there is someone who can help me out.
Within FFMPEG i am trying to add (channel pack) 3 different grayscale videos in RGB within a webm or mp4 video. I got it to work to a degree via Merge planes.
This is what i tried :

  


  ffmpeg -y -i video1.webm -i video2.webm -i video3.webm -filter_complex "[0:v]format=gray[r]; [1:v]format=gray[g]; [2:v]format=gray[b]; [g][b][r]mergeplanes=0x001020:format=gbrp" -pix_fmt yuv420p -t 00:00:03 output.webm


  


  This is the result :


  


  As you see the 9 is visible in the red and blue channel and so are each of the other channels

  


  I have tried just extracting a single channel in a video, change the compression change the format change the color space, make sure that its all linear but each seem to have the limitation of some smearing/artifacts between the other channels.

  


  Is it at all possible to add different grayscale streams in the color channels without any artifacts and if so in which direction should i look ?

  


  Any help would be greatly appreciated !

  


• Identify local (LAN) vs live URL FFmpeg

  11 juin 2014, par Tarun Seera

  Hi I am using FFmpeg in my iOS app for stream local and live URL.
  Is there any way to identify the URL which I am opening is local or live.
  Actually I want to specify the rtsp_transport in avformat_open_input accordingly.
  If I do not specify the transport its by default taking UDP.
  In UPD I am losing packets in live stream.So i want to specify the transport TCP for live and default for local url.