Desktop/Screen capture/streaming including audio on Linux

[cly]

Hey there,

i'm using VLC on Linux to capture/stream my desktop screen usilng

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vlc screen:// ..

But there is no audio.
How do i add Audio from ALSA or Pulseaudio (or?) into the video stream?

While google tells me many ways to get Audio and Video at the same time with

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dshow

there is nothing usable for linux machines.

Recording and muxing after is not an option; i need a live-Stream.

Thank all!

[Jean-Baptiste Kempf]

You can try input-slave and alsa:// or pulse://

[Rémi Denis-Courmont]

Something like

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screen:// --input-slave pulse://alsa_output.pci-0000_00_1b.0.hdmi-stereo.monitor

The exact name of the PulseAudio monitor source depends on your system.

Note that desktop audio recording (i.e. loopback) is not possible with ALSA by design. You need PulseAudio for that.

[calanor]

For years the screen and audio capture has worked well in ubuntu 14.04 LTS and vlc 2.0.10 Twoflower (compiled by myself) using --input-slave pulse://alsa_output.pci.......

A few days ago, I changed the hardware and I had to upgrade the kernel to 4.4.0 to support Intel Skylake HD Graphics 530 maintaining the same compiled version of vlc. Now, the audio/video streaming does not work well.

Without audio capturing the screen streaming works fine for hours and hours, but with adding audio capture a few minutes begin to appear drops of video and audio and after hours the stream fails completely. Many times the audio begins to be heard slowed, as in slow-motion.

The commandline:

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cvlc screen:// --screen-fps=25--input-slave pulse://alsa_output.pci-0000_00_1f.3.hdmi-stereo-extra1.monitor --sout-transcode-high-priority :sout='#transcode{vcodec=mp2v,vb=8000,acodec=mpga,ab=128,fps=25,width=1280,height=720}:standard{access=udp{ttl=64},mux=ts,dst=239.192.x.x:xxxx,sap,name=TEST_STREAM}'

Any idea what can happen?

Thanks!