Ubuntu Multimedia :: VLC Won't Downmix To Stereo
Feb 1, 2010
I have some AVI files that are encoded as AVI files with ac52 audio, which I think is surround 5.1 or something channelized, because I am only using my headphone output to some powered speakers and I can't hear the dialog.I thought there would be an easy way to downmix to stereo, did some searching, and tried under audio menu, to get to audio devices and select stereo.But the option is greyed out whether or not a file is loaded.
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May 19, 2011
I'm using a CAD u37 usb condenser microphone for some semi-pro voiceover work. My clients insist on stereo audio. On my windows machine, my mic works just fine, but it's not in very very good place for recording (a bit too echoey). So I thought I'd use my netbook running ubuntu.I can plug my mic in, and it does record sound, but there is no available sound profile that allows me to just have two-channels of input. Can I install a driver or edit a file somewhere that lets me have stereo input?
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Mar 30, 2011
I can't find the option for 3d sound, such as "Speaker Fill" in Realtek Control Panel for windows. I searched in sound preferences, alsamixer and pavucontrol with no result. 5.1 surround sound for movies is working good, so there is no problem with hardware or compability with ubuntu, I think. What should I do? "Speaker Fill" is very useful option.
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Mar 18, 2011
Bought a new yamaha receiver and have it hooked up to my pc via a y connector on headphone out.
problem: computer speakers work fine when connected to the same audio output described above. when connecting the audio out to my stereo receiver, there is no sound.
the receiver indicates that it is not receiving a signal.
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Jul 26, 2011
Ubuntu 11.04, with Myth 0.24 and XBMC 10.1. Hardware is an Asus P8H67-M Pro mobo which I bought specifically because it boasts an optical output, which I need to send 5.1 sound to my receiver.
My plan is to set up MythTV for watching TV, and have it send stereo sound directly to the TV via HDMI. This part is working fine.
And then set up XBMC to play my collection of ripped and recorded video, with the sound always going via optical spdif to the receiver. I did have this working on a prototype (different mobo) but now I have my "final" hardware I can't get this bit to go.
The issue seems to be that the OS is only seeing the Optical output as a stereo device - for example if I go System Settings - Sound I can see two hardware devices - "Digital Stereo HDMI" and "Digital Stereo Duplex (IEC95"
I'm new to this area of Linux, so would really appreciate some pointers - I've spent the last couple of hours reading immensely long threads and not getting any wiser! code...
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Feb 14, 2010
Until recently, when connected my laptop to the stereo via audio out, i had sound coming only from the stereo. I don't know why and when exactly this happened, but now when the stereo is connected, i get sound from the laptop speakers and stereo speakers simultaneously.Is this a bug? I'd like to mute only my laptop speakers but haven't figured out how. I've tried every setting in "sound" or "audio" or whatever it's called in english, but to no avail.Any ideas how to turn off the laptop speakers?
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Jun 10, 2010
Alright, the lifehacker article about this Acer machine got me interested in revisiting XBMC as a media center. I bought the AR1600-U910H from Newegg and have been struggling for a couple of weeks to get it working correctly. I opted to install a full Ubuntu desktop to utilize the hardware fully with a standalone version of XBMC. I am currently running Lucid with NVIDIA 256.25 (was running 195 series) driver. Switched to 256 because I heard it fixes the no multi-channel output problem. However, sadly I can't get multi-channel out to work. I have the HDMI output going through my Onkyo TX-SR608 receiver for both audio and video. My problem is I can only get stereo sound out while running XBMC (or any application for that matter).
I've upgraded Alsa to 1.0.23. I've installed new Beta 256.25 NVIDIA driver. I've configured Alsa about 28 different times. I'm at my wits end. So, my question is - does anybody having a similar setup with the ION chip (or the Acer Aspire Revo in particular) where they can succesfully get HDMI digital audio pass through to a receiver (or at least digital multi channel out)? The best I've gotten is 2 channel audio, which doesn't do a lot of good on a 5.1 setup. If I would have known getting multichannel audio would be so difficult I would have rethought starting this endeavor. I don't care if I have to do a fresh reinstall of everything - if that means a different version Ubuntu so be it.
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Nov 13, 2010
I just got a 5.1 Surround sound system and set it up. I found that it was only working as stereo, though (That is, only the two frontal speakers were producing any sound). I made sure everything was not muted in alsamixer and checked that the hardware was set to 5.1 in the Sound Preferences Hardware tab.
I'm using Ubuntu 10.10 64bit and my sound card is an onboard Intel DG41TY, Realtek ALC888VC codec.
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Jan 22, 2011
I have an issue with the voice channel on certain MKV fikles being really low compared to the music and sound effects. I've found an explanation and solution for Windows for this, but nothing for linux.
[URL]
how to get the same kind of result in smplayer or xine or VLC? For info, playback is fine through headphones - no channel imbalance.
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May 6, 2010
I have updated my Ubuntu to Lucid 10.04 from 9.10.
Although my sound disappeared in 9.10 only, I thought maybe upgrading might help, but there is no change.
I guess everything is installed fine.
But still aplay -l command shows "NO sound cards.. "
Moreover the sound preferences shows no hardware, no input and a dummy stereo output.
I have banged my head a lot trying various things written in forums and all but no success.
One more thing : When I test "osstest" , I get sound in both the earphones , but altogether there is no sound. I am very much confused.
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Nov 10, 2010
What it says on the tin really. Whenever i set my sound preferences to 5.1 analog surround i get a sort of high-pitched whine/buzz coming through the speakers along with the regular sound, however if i switch to stereo duplex, it vanishes.
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Jan 20, 2011
I need to know how to setup Ubuntu 10.10 64-bit to record what's called the "stereo" and "mono" mix popular in Windows where it records anything playing out of the speakers. The goal is to play the microphone through the speakers at the same time background music is playing and thus record both. I also need to know how to play the microphone through the speakers.
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Apr 26, 2015
I have a home media server that usually is running headless, as its only display is our TV. For the last year or so, I've used it as a component in our stereo, running Banshee via tunneling x to a server on either my phone or another computer via ssh. Please note I know that X doesn't handle sound, the idea is that the remote computer controls the media center which is hard-wired into our speakers.
This has worked great with Wheezy for about a year, and for several months with Jessie (up to like the end of February) when I started to have general sound issues with my install. I spent a few months running Ubuntu and now that Jessie's released I re-installed it last night.
Banshee runs great on the local X server- no issues. It also runs acceptably under XServer XSDL on my phone (it won't continue playing songs after the current song ends, unless I re open the X server app and then it sort of wakes up.) But when I try and log in from a remote computer (either another Jessie computer or Ubuntu 14.04.2) it says it's playing but no sound.
Here's what it's saying in the terminal on the Ubuntu computer while it's trying to start playing on the media computer
Code: Select all[Warn 09:39:01.506] DBus support could not be started. Disabling for this session. -
System.NullReferenceException: Object reference not set to an instance of an object (in `dbus-sharp-glib')
at DBus.BusG.Init (DBus.Connection conn, DBus.GLib.IOFunc dispatchHandler) [0x00000] in <filename unknown>:0
at DBus.BusG.Init (DBus.Connection conn) [0x00000] in <filename unknown>:0
at DBus.BusG.Init () [0x00000] in <filename unknown>:0
at Banshee.ServiceStack.DBusConnection.Connect (System.String serviceName, Boolean init) [0x00000] in <filename unknown>:0
[Code] ......
This install is running the released Debian 8.0.0 and has the MATE desktop. I really don't have a choice other than Banshee because the majority of my library is encoded as .ogg files and all the metadata is saved in banshee.db as opposed to in the files.
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Jul 27, 2010
I've done a search on google and on here regarding my issue and I couldn't see anything.
I have the following audio device;
Code:
00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)
At the moment I have it playing through Analog Stereo Output. (See attached image)
The sound is mostly flawless and I haven't been having troubles with it.
But, because I play audio through my logitech speakers (2 speakers, 1 subwoofer) I should be able to get digital stereo sound shouldn't I?
From the drop down box of the attached image there are two options for Digital Stereo;
Digital Stereo Duplex IEC958
Digital Stereo IEC958 Output + Analog Stereo Input
None of them work for me. Even if I do a restart, I get no sound from Rhythmbox or Firefox.
I use the pulseaudio sound server and I have the PulseAudio device chooser installed. When I had the Digital Stereo Duplex IEC958 selected I used the Volume Meter playback to see if there was any sound coming through. Both left and right showed activity but nothing came through the speakers.
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Sep 9, 2010
I bought this Radeon 4670 [URL] to improve my video. Although the description on ATI-AMD webpage [URL] specifies that this card can output up to 7.1 audio through HDMI, Sound Controls only shows the stereo and off option. ATI Catalyst does not have any controls for audio. Is there a way to get 5.1 audio enabled? Using 10.04.
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Oct 25, 2010
When I use my ubuntu computer to watch some movies that are encoded into 5.1 sound I can't hear the voices of the people in the movie. I guess that is because the voices are put on the front speaker and I have connected the computer to an stereo-amplifier.
I mainly use XBMC and have noticed the problem there but I have also tried VLC and noticed the same problem there. In xbmc I checked the box "Downmix multichannel audio to stereo" but it doesn't work.
I use a standard ubuntu 10.04 64-bit install that was upgraded from a 9.10 install.
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Jun 7, 2011
I am at the end of my tether in trying to get sound setup on my Ubuntu installation. I have tried many different 'fixes' that people have suggested, but none seem to work!
My setup is as follows:
> HP Proliant Microserver
> Ubuntu 10.10
> Zotac GT210 card
> HDMI from GFX card to AV amp
> 5GB Ram
What I want to be able to do is:
> Play music from FLAC files I have ripped in either stereo or sudo 5.1
> Play DVD iso files that I have ripped in the audio format found on the original discs (DTS etc)
I have managed to get sound working before, but only in stereo and I couldn't get it working in XBMC (not the sound from the main movie I chose anyway). I have since completely broken the sound after trying various things found on the interweb and cannot get it back.
[Code]....
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Jun 22, 2010
For personal reasons (I'm hearing impaired) I need my linux machine to produce mono downmixed sound. Downmixed, not just single channel.
Is there any possibility to force such behavior in ALSA / PulseAudio server? Hardware mixing (short-circuiting L and R channels with some resistors) is not possible at the moment. I'm looking for a software solution to mix two channels into one.
I know that some media players have this functionality, but I'd like the whole system (ie games, flash applications, etc) to produce downmixed audio.
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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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Jan 30, 2011
So, I've got an Acer 5742G, and the silly thing is only built with one internal speaker. Ubuntu thinks it's my left channel, however Windows 7 'gets it' and plays both channels to that speaker.When I plug in external speakers or headphones, everything works fine.
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May 19, 2011
I have a MacBook Pro 8,3 w/ Natty installed on it and noticed on the wiki [URL]... it says sound only comes out of the right speaker. I just want to share that I got stereo sound on my machine by adding `options snd-hda-intel model=mbp55' to the end of `/etc/modprobe.d/alsa-base.conf' and rebooting. I didn't see a solution anywhere else. I haven't done extensive testing, I just know that now I have sound coming out both speakers (and headphone speakers) at balanced volume levels.
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May 19, 2011
Kinda like sleep timers, this technology has been around longer than dirt as a basic option on TVs, radios and other electronics, and yet why is it so hard to find these options in the modern OS? So far on Google I've seen this question asked repeatedly as far as 4 years ago. Haven't come across an answer...How to enable mono sound instead of stereo?
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Feb 3, 2010
I'd like to capture streaming audio. Installed Audacity but the mixer toolbar doesn't show a mix or stereo mix dropdown option. So, there's no capture possible. It's not a hardware issue because I do get the stereo mix option in Windows Vista (this is a dual-boot PC). I've spent hours reading about this and there's lots of folks talking, but no solution that I can find. It must have something to do with how ALSA manipulates this particular hardware. I had Fedora 10 installed and had the same problem with it. At this point, it's the only reason I have left for keeping Vista. Note: I have an ancient IBM T23 with Fedora and Audacity. Stereo mix IS an option in the mixer dropdown menu; I can record ok. I'm not going to take the patch cord route (line out to mic in etc) because then I can't hear what's being recorded. And there's got to be an impedance problem that would impair the quality. Maybe someone who's solved this will read my post and comment. No going to hold my breath.
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Apr 22, 2010
Keep trying to set the tv card to stereo, using tvtime and mplayer and v4lctl but it stays at mono. Put speakers up to me shell like goblets and it sounds like mono to me. I am completely at a loss so would like *anything* no matter how half-witted.
[Code]....
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Jul 14, 2010
I need to convert stereo to mono and for that purpose I am unable to find the plugin stereo2mono.
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Mar 20, 2011
So I've got an flv video with horrible stereo sound (sound is good, but the stereo is very bad), which I listen to with my headphones. I need to make it mono in GNU/Linux since I have no Windows. Or with any Web-service, I don't know. Any tool to do so.
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Jun 1, 2010
I tried soundkonverter, but it doesn't work. I don't know why, it just doesn't make MP3s mono. Linux Mint 9.
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Sep 17, 2010
I have a USB sound unit. It is detected and auto-configured in my 11.3 system as a Xitel HiFi-Link and is using the snd-usb-audio driver.
However, in the YaST | Hardware | Sound <0 HiFi-Link> | Edit, there is only one volume slider bar. I can not alter the left/right balance!
Is this a driver issue? Any thoughts on how to get two volume sliders?
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Dec 29, 2009
I just bought a ClearChat Stereo and trying to use it on Skype but no luck. Sound is working fine but not the microphone. I just can't get the microphone to work even without the headset. Everything in Kmix is turned up to max and nothing is muted.
I deleted Pulse Audia and am using ALSA because I thought that that was the problem but that still doesn't help. I have an ASUS Notebook but my brother is having the same problem with with an older Thinkpad. Using KDE 4.3 on openSuse 11.2. I have tried all the devices within Skype (microphone) but none of them works.
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Oct 12, 2010
Ubuntu insists on using movie player as the default for audio files. I would like to use VLC. VLC doesn't show up on the list as preferred applications for multimedia. I tried using custom with vlc %u but it doesn't work.
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