Ubuntu Multimedia :: Realtime Streaming Of Mic Input Over LAN?
Jul 21, 2010
I have investigated loads and loads of options and haven't really yet come across what I need.
I wish to stream the microphone input from a PC using Lucid to another PC also using Lucid on the same network. I don't care about the quality, however, latency is really important. I hope to use it to monitor the cries of my baby daughter, so the lower the latency the better.
I have tired various options:
- FFserver and FFmpeg - latency of over 30 seconds
- VLC - couldn't get it to work with my mic and maxes out the CPU
- ssh server 'cat /dev/dsp > /dev/dsp' - latency of around 5 seconds by audio keeps breaking up with huge delays
- icecast2 and darkice - latency of around 7 seconds but no audio breakups
I've been reading on maybe using PulseAudio to stream the input, but I am not sure if it will work or not...
how to get near real-time streaming audio? As I said, it is the realtime, not the quality that is important...
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Jan 10, 2010
Just got Studio 9.10 running and the RT kernel installed. I have a Prescott P4 3.2ghz (hyperthreading) and i encountered what looks like a common freeze problem. I am guessing my cpu will not be supported in the RT kernel since it is pretty old now.I added nosmp acpi=off during boot at the Grub2 menu and it booted fine and I was able to capture some video great.
My questions is, if I remove the smp support by using the nosmp option, do I still benefit from the RT kernel or would I do just as well with the generic kernel I have installed?Eventually I will upgrade do a new system board and processor but for now I just got some life back in this one by switching to Linux
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Nov 1, 2010
I am not able to start JACK in realtime mode. This is a bummer. here is the error message I get:
p, li { white-space: pre-wrap; } 11:58:20.745 Patchbay deactivated.
11:58:20.746 Statistics reset.
11:58:20.812 ALSA connection graph change.
[code]...
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Jun 28, 2011
is there a realtime or low-latency kernel in a repository somewhere for OpenSUSE 11.4? I know I can just compile a rt kernel, but that's a bit tedious and I'd like to avoid it if possible.
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Jul 25, 2011
As the title says, I'm looking for a command to resize on the fly as I capture. My desktop's 1680x1050, but I want to shrink down to say 1280x720.. or other.
So far my command is code...
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Apr 30, 2011
I cannot start jackd in X with realtime scheduling:
[Code]...
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Nov 30, 2008
I can be granted permission, and I'm in the proper groups, but pulseaudio tells me I can't get permission.. I wanted to see if anybody else had this problem / knew of a solution / isolate whether it is a pulseaudio, policykit, whatever problem, before I post a bug upstream.
Code:
[Sun 07:25 AM] ~ $ rpm -qi pulseaudio | awk '/Version|Release/ {print $1$2$3}'
Version:0.9.13
Release:3.4
[Sun 07:25 AM] ~ $ groups
[Code].....
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Nov 4, 2010
I recently got a real fancy unidirectional microphone, but when I go and use it, something strange happens. The mic is a mono mic, but when I record something, it appears to think it's stereo. Instead of having the same thing on both channels, it puts it all in the left channel, and silence on the right channel.
I tried fiddling with alsamixer. In capture (F4), adjusting the "Capture" device has an effect. However, it doesn't do anything useful. Lowering the right channel to zero does nothing, lowering the left channel to zero creates silence, and disabling the right channel creates silence.
In my System>Preferences>Sound (or pavucontrol, or what-have-you), there are "Analog Stereo Input" and "Analog Stereo Duplex" options there, but no "Analog Mono Input" or "Analog Stereo Output + Analog Mono Input" options (the latter being ideal).
Something interesting, though, if I do this:
Code:
arecord -r 96000 -D pulse -c 1 -vv -V mono /dev/null
it works correctly and outputs on both channels. But if I do
Code:
arecord -r 96000 -D pulse -c 2 -vv -V stereo /dev/null
then it's back to the same behavior. The VU meter on the second command shows the left channel going up and down as I make noise, but the right one always at zero.
The machine does have a crap internal mic built in to the screen bezel. If I do either of the above commands, they both work correctly. The stereo VU shows the same activity for both channels.
The machine is a Eee 1015PED, which has Intel integrated sound. Something probably insignificant is that the mic has a 1/4 inch mono plug, and to get it to plug into the Eee, I needed to get a 1/4 female to 1/8 male adapter. The mic's 1/4 plug is mono (duh) and therefore two-conductor, but the adapter I got is stereo, or three conductor (L, R, GND). I don't know if this is tripping something in hardware to tell it it's stereo or something.
I tried the mic on my desktop, which has a SB Audigy 4 (the non-pro flavor) and that has the "Analog Mono Input" function, so that works fine. Is there some way to turn this stereo input into mono input?
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May 1, 2010
I installed Lucid. I used to have Ubuntu 9.10 and to connect my iPod to my laptop's speakers. There was an option in 9.10 in the Sound Options to change the Mic Input into a Line Input. But now unfortunately I can't find it in Lucid have only 2 audio ports in the laptop: Headphone port, Mic port.
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Apr 13, 2010
I want to stream .avi *divx/xvid* (because of the nice compression and quality) online and have all streams accessible through a web based library type thing. Something like Jinzora ( http://en.jinzora.com/ ) is what I am looking for, but it's buggy. I would even be satisfied with a web based library of streams that you click and open with an external program. I have searched a lot for this and the only thing I found that can do this how I want (if it worked right) was jinzora. I don't want to convert to mpeg4 or flv because of size and quality issues.
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May 26, 2009
I successfully installed darwin streaming server .. I stream Audio through internet well but videos I can stream locally in my network only .. when I am connected to internet outside my network .. it doesn't stream I think their must be ports opened for that .. or any 1 have any ideas .. the audio is streamed on port 8000 .. video is streamed on port 7070 but locally only .. I opened those 2 ports in my router only the audio is working .. also I opened ports 554,7170 disabled the firewall of the router .. is it a problem of ports or something else .
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Jan 19, 2010
I'm looking for better tweak my current streaming setup to my analog TV. I'm running everything from the S-Video out on my graphics card to the s-video input on my TV so in essence my computer is occupied if i'm watching something streaming from it.I have an digital converter box hooked up to my tv via coax and a upscaling dvd player to it via component video.Is there a way I could run the streaming in the background or get it so it sends a full true signal and converts it much like the digital video?
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Jul 21, 2010
I'm trying to record a show from the following website [URL]. Is there some way to figure out what the streaming url is? I have a script that I am using for another station, but I need the url from this station. Here is the url in my current script: [URL] What is it for the station I've listed above?
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Mar 3, 2011
I'm dual-booting Win7 and Ubuntu Maverick on both a laptop and a desktop, of course using Ubuntu for as much as I can. Now, I've also got a new Sony Bravia TV that is connected to my home network. I've found it so incredibly easy to stream media from my computers to the TV under Win7 and it really bites me because I want it to be like that in Ubuntu too. But it isn't. sources for streaming media from Ubuntu to a network-connected TV?
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Jun 20, 2011
About a year ago I installed Ubuntu Server 9.10 Karmic on a machine at my work to act as a file/print server and ftp host. I managed this with a lot of googling and reading of forums and it's still all working exactly as it did on day 1!
Now I would like to use the server to stream a local radio station through speakers into the workshop. I have again googled but have not managed to come up with a solution for a server sytem with no GUI...
The radio station streams in a m3u format.
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Feb 2, 2010
I would like to record the audio from a streaming audio swf file. The site is:[URL]I found how to record audio from flash files (ie. .....) but not streaming from swf. Would anyone know how to do this?
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Feb 4, 2010
I have a ubuntu desktop running 9.04 and a Acer Netbook running UNR 9.04.Using NFS I have shared my videos from the desktop and have it automounted at start up on the netbook. I can navigate to the files but once I click play, the netbook locks up.Is this a limitation on my hardware or is there a better way to "stream" these vids?
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Mar 3, 2010
I would like to stream my HD Movie collection over a wireless network to my PS3 and/or Xbox 360.
All my movie files are MP4s and I wondering if it is possible to do this. If possible, I'd like to use the VLC player to do this but its not too important. I really really really do not want to sacrifice any video or sound quality while streaming.
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Mar 19, 2010
If I try playing ..... or other streaming video I have no sound. It used to work and then my dumbA$$ tinkered with it and now I have restored Flash, which was working flawlessly, don't know where my head was at but it was dark and smelly.
EDIT: I have Ubuntu 9.10 and my sound card is an nVidia Corporation MCP61 High Definition Audio (rev a2). I tried to follow along with the instructions in the sticky regarding the
Quote:
Comprehensive Sound Problem Solutions Guide
but when it gave me the instruction to select my sound card manufacturer from the drop down menu, I never found it.
FWIW, my speaker are on and they play music, system sounds etc, just no sound for streaming video. Pandora works fine etc. Also, this is isolated to Firefox, as it works fine in Opera.
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Apr 6, 2010
My local priest has asked me if I can use my computer skills to stream church services live for people who can't make it to church.I said, sure thing! I thought it would be simple, but the deeper I look into it, the more lost I have become!Here's the tech requirements:
- A camera with good optical zoom and focused on the altar (the camera will be stationed at an unobtrusive point at the back of the church on the choir balcony)
- Everything must be wireless (power is available on choir balcony to power the camera).
- Sound should be synchronised perfectly with the video (have access to the church PA system - located behind altar)
- the internet connection should be able to upload the stream to a virtual server (i.e. with root access) that's accessible to the web with ease. What upload speed would I need? Would 256k be enough? HD video is not required - ..... quality would be great. We can upgrade to HD at a later point in time!
- What bandwidth requirement would my server need if say 1000 users were connected? Seeing as they would most likely be locals, would just one stream be sent to the local exchange and that exchange would send out the stream to the 1,000 users, or would each user have to have a dedicated connection to the server?
- Say I bought a camcorder with HDMI output, what kind of processing power would I need to convert this to compressed video? (I've got an old Pentium 4 and an AMD64 2.0GHz lying idle in my bedroom and it would be great to make use of 'em instead of chucking 'em on the skip)
- I'd like all this to be done so that HTML5 browsers can access the video, resorting to flash if necessary
- I'd also like to be able to power down all the hardware with ease: i.e. set a timer. I'm sure ubuntu can do this with ease? What about configuring the camera to zoom in every time it is powered on? Can linux control the zoom on a camcorder?
- Am I totally nuts?
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May 19, 2010
So I'm sitting on some components from my old pc build and am looking to stream over my tv once again. My decision rests on do I build the box, run Boxee and/or Windows Media Platform to keep the box with my TV or do I buy the 35ft RCA video cable and dvi composite out adapter for my video card and go that route? All my music and media is stored on a external backup drive so the box I build would not have access to the media unless I could create a wireless network but I do not know how to do this with Ubuntu. Anyone willing to hold my hand and help me walk through this to get a decision made?
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Jun 4, 2010
I am trying to stream a live dvb feed to windows media player on a number of desktops. I have VLC and all the codecs etc installed.
I am starting my stream with the following command:
Code:
After vlc loads, I get the following error:
Code:
It seems your FFMPEG (libavcodec) installation lacks the following encoder: MPEG Audio layer 1/2/3.
If you don't know how to fix this, ask for support from your distribution.
This is not an error inside VLC media player. Do not contact the VideoLAN project about this issue. After some searching around, I found a guide on setting up ffmpeg at [url] which I have followed. I am still getting the error.
Do I need to add any other codecs to make this work?
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Jun 16, 2010
I've got a NAS mounted on a linux machine, and here at another location, I have my Ubuntu laptop. I'm able to remotely, securely mount the directory my NAS is mounted on in the linux machine onto my laptop via sshfs, giving me remote access to my NAS via my laptop.The problem I'm having is.. even though I have a high downstream at the laptop end, and a hefty 1mb upstream at my home, I still can't quite stream the movies I have stored on it. I can stream them, but there is a lot of stuttering.I've tried messing around w/ various options w/ mplayer, but I can only improve it slightly at best. Am I missing something? Is it a size issue that it comes down to? The files are roughly 700mb for a 1 1/2 - 2 hr avi file.
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Aug 8, 2010
When I play streaming video on hulu or other sites it is choppy. However, the sound is fine. Video files play fine when I download them.I experience this problem in both Firefox and Chrome. I have a 10MB connection on other Linux desktops the streaming video is fine.I imagine it is a flash issue, but I have the latest flash v10.1.The other solution would be a video downloader for streaming video. I have not found one that works on Linux.
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Sep 5, 2010
Use Freecorder in Win7 to record streaming audio and save it as an mp3. Anyone know of a similar program for Ubuntu 10.04? Tried Sound Recorder but I guess that's just for a microphone. Streamripper only seems to work on ShoutCast.
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Oct 16, 2010
the Windows 7 have implemented or just like some third parties programs for Win again, that can wireless stream video or music files to the TV or the PS3? Anything similar for Linux? Ubuntu 10.04 is my environment.
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Nov 1, 2010
I am elevating this thread up a level from [url] . Ubuntu 9.10 no longer streams without the screen pausing and going black every 2 minutes! Our product was just going into production and now we need to hopefully find a version of Ubuntu that streams video! We couldn't go with Unbuntu 10.04 because the video streaming was 30% slower than 9.10.
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Nov 14, 2010
Has anyone managed to stream sound from there computer using pulseaudio and rygel ?
I have rygel installed and that works when i run rygel it appears on the ps3.
I also have pulseaudio with dlna enabled and can select it as an output in the sound preferences.
However pulseaudio does not seem to register its stream with rygel, and i am unsure why my only thought is that the versions are wrong as i noticed rygel has recently change its dbus path.
If anyone else wishs to attempt this installing rygel will make the dlna option tickable in pulse audio device chooser applet then you just need to figure out the part i cannot.
I would love to get this working as my ps3 is plugged into an amp it would mean i can send the music i am playing on my laptop to the amp with out plugging the laptop in with a cable.
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Nov 15, 2010
I have access to a video stream that is only available in certain areas. I would like to re-broadcast this stream to other users. What method would you suggest? I tried using WebCamStudio but that method basically records my desktop and the video quality degrades to the point of being unable to view it clearly. I've seen some pretty clear re-broadcast streams on justin.tv or ustream, but typically when I ask the operator they're using some type of Windows software. Does anyone have a suggestion for doing this on Ubuntu? Does anyone here do any live streams or re-broadcasts using Ubuntu, or any Linux-based distro?
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Jan 6, 2011
I haven't gotten an answer from Second Life fora so I thought I'd ask here. I'm using Ubuntu (lucid) x86_64. Totem, Rhythmbox etc all work correctly but I fail to get any streaming audio from any of the Second Life clients I've tried. In some cases I can copy the media url into rhythmbox and run the sound from there but in most cases the url is "hidden".
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