I'm looking for configuring a Ubuntu box, we need to capture alsa output into ffmpeg with jack or OSS but not pulseaudio, as that tends to glitch badly. We have things working, but we are sort of hacking around in the dark, we play music, but as we aren't linux audio experts ourselves.
View 1 RepliesI've got an Acer Aspire 5101 with Natty on it and everything works so far, but I can't start Muse. It says: "Muse failed to find a jack audio server". At the bottom it also says: "...if Jack was started check if it was started as the same user as Muse". This might be the issue. But how can I check this? BTW: Jackd has been installed and I am a Member of the Audio Group.
I am new to Ubuntu and don't know how to fix this. I got this Notebook for free, because my Brother wanted to dispose it as it didn't worked properly after he reinstalled xp. Only the dvd-drive is broken, the rest is in really good condition for such an old thing. After a lot of trial and error I could finally install Natty from USB.
Anybody had any success in getting ffmpeg to work as advertised with video capture from a webcam? I really want to convert the webcam output to VP8 or H264, but apparently ffmpeg can't even capture the webcam with a video4linux device.
Code:
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...
How I would capture on-screen audio AND my webcam audio at the same time.(My webcam seems to rely on pulse).
View 1 Replies View Relatedi installed an nvidia graphics card recently and this
Code:
ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 30 -s 1024x768 -i :0.0 -acodec pcm_s16le -vcodec libx264 -vpre lossless_ultrafast -threads 0 ./Desktop/mydesktop.mkv
[code]....
Here's the problem: My notebook's right speaker makes an awful sound when playing music. I want to configure the sound so as to get MONO and balanced to the left when I use the built-in speakers, and STEREO w/o balance when and plug a jack, ie: earplugs.
View 1 Replies View RelatedDoes anyone have any experience of forwarding audio from Ubuntu to Windows 7 x64 via JACK? I'm struggling to find any useful documentation. I've tried to accomplish the same using a Pulseaudio server, which is better documented but the windows binaries are years old and as far as I can tell can't be made to work without disabling IPv6. Any other ways to forward audio would also be welcome. Bandwidth isn't really an issue as it's VM to VM on the same machine.
View 1 Replies View RelatedI try it for the first time. Befor I changed to linux I used MS Windows 7. There I worked much with SonyVegas for video and Adobe Auditon for music. Yesterday I searched for alternatives under Linux for Audition. And I found much. The screen shots says, that they look similar to Auditon. I downloaded them and installed them. But they doesn't work. One of them say they can't connect to Jack. Some of them say nothing, and so they don't record my line in/microphone input. After a few seconds I of search, I knew that all of these programs uses jack for Audio. I installed it, but the situation wasn't better. Then I found a wiki, and try that: first start jack, than start the program. So I do. But there i get a few error messages: At first I should copy to lines to the file lines.conf. I do it. Then I should be member of the audio group. I do that.
[Code]...
I have had no problems whatsoever with audio in ubuntu 10.10. Both input and output have worked great, but alas now there's a problem.
I recently installed ardour2 with jack (using apt-get) but for some reason, anytime I start ardour2 (which starts jack implicitly) all audio stops on the whole computer. That is my computer goes silent. As soon as I exit ardour2 audio resumes.
Also, although this will probably resolve itself when I resolve the other problem, when exporting a project to audio file from ardour2 it exports silence for the entire duration, even when ardour2 is exited and audio has resumed.
I'm no linux novice, so I'm not afraid of command line solutions (I prefer them actually) however I know nothing about jack or audio editing in linux whatsoever, so if you could be very specific about jack terminology that would be great.
I have had success with operating JACK, but I am still learning... I can get audio through my microphone into ubuntu and can record into audacity without a problem, however, I do not know how to get JACK to recognize the audio from the microphone (through the normal mic jack)... any ideas how I may accomplish this so I don't need to do all kinds of file conversions and imports to set down a vocal track with the tracks I record (via USB) through JACK?
View 3 Replies View RelatedI upgraded to Ubuntu 9.10 recently to find that my computer will not play mp3 files in Rythmbox, Amarok, or Kaffeine media players. All of the FLAC files I have ripped from CDs work, but no mp3 files work. I have downloaded and installed the ubuntu restricted codecs from Synaptic as well as the codecs prompted by Rythmbox rebooted, and still no result.Like I said, the .FLACs play fine.On another note, no sound is being transmitted to my earbuds. The only sound will come from the laptop speakers.
View 4 Replies View RelatedIm a composer and I loaded up on some excellent applications for music creation and notation- so excited..
I start with Rosegarden. Failed to connect to JACK audio server. Try my other applications, same problem.
Basically the JACK audio server just WILL NOT RUN (correctly). I can sudo it and press start, but still it wont "play with" the applications! Heres the error message from JACK (I also get related errors when I try to do ANYTHING involving music creation):
error JACK Audio Connection Kit
-overall operation failed
-unable to connect to server
Here is the "fatal error" from MusE
"Failed to Find Jack Audio Server"
This is the JACK output:
[Code]...
now half of the speakers plug is stuck in the back of my PC. cant get it out, because it's very deep. i decided to use the front jack for sound but it wont work.already tried alsa mixer and upgraded my kernel.i think the problem is that i need to somehow kill the jack in the back of PC because its still alive and sending signals to that half-dead jack
View 1 Replies View RelatedI creating a mini soft for screencast (audio + video) with ffmpeg.For the video,it's ok.For the sound, the capture of sound of my webcam (/dev/dsp1) it's ok.
Code:
ffmpeg -f oss -ar 44100 -i /dev/dsp1 -acodec mp2 -ab 128k test.mp3
But for my audio desktop :
[code]...
I want to convert all video file in folder a become audio file in folder b use ffmpeg, how to type it in terminal?
View 7 Replies View RelatedI'm a complete Linux newbie - only installed it yesterday, and have spent hours trying to get my M-Audio Firewire Solo sound card to work. I can hear nothing at all. I know nothing of Linux, but am willing to learn. While I learn though, it would be nice to listen to a little Hall & Oates. I've got to the stage where the error messages I'm receiving don't bring up any results on Google. Here's what things look like (watch out, big pic):
Those sample rate errors appear in the terminal when I start ffado-mixer. I'm running JACK with everything set as I think it's supposed to be, except that 'Realtime' is unchecked.If I start JACK running with 'Realtime' checked, it tries to launch and fails, saying "JACK is running in realtime mode, but you are not allowed to use realtime scheduling. After applying these changes, please re-login in order for them to take effect". I don't know what more it wants me to do - i've already added
@audio � rtprio 100
@audio - nice -10
@audio � memlock unlimited
to /etc/security/limits.conf, and selected the 2.6.31-11-rt kernel on GRUB bootup. I'm a member of 'audio' and 'disk' groups like'm supposed to be. Have I not got the connections right in JACK? Have I got some sample rate settings wrong somewhere?I'm not even bothered about low latency with the realtime kernel right now, I just want to hear some sound
I just upgraded some audio programs using a ppa and now there is no sound at all,i have been using hydrogen drum machine and ardour with jack audio and now there is no sound at all.
View 9 Replies View RelatedI want to record some streaming internet radio talk shows and music performances on NPR, and I'm wondering what my options are in Ubuntu. I'm looking for something that can output high quality lossless files in several formats, hopefully including mp3 and ogg.
View 6 Replies View RelatedI need to capture from my webcam. It has a mic too.I can specify video input device as /dev/video0.I specified input audio device as /dev/dsp2 ( OSS device, corresponding to USB Webcam), Now VLC throws an error, "VLC is unable to open the MRL 'alsa:///dev/dsp2'. Check the log for details".Thinking it wants an alsa device, I specify device as /dev/snd/pcmC2D0c. (got it from kinfocenter and dolphin). Now again an error, "VLC is unable to open the MRL 'alsa:///dev/snd/pcmC2D0c'. Check the log for details.".I try with any device, the same error. I have added myself to audio device so that I can read/write to the mentioned devices.I see no way of switching VLC to use OSS. And I see no information (documentation on net) on it's expected device listing for audio.
View 5 Replies View RelatedI recently installed openSUSE 11.4-64bit on my Gateway desktop, and I can't seem to get my mic work at all. The mic is built into my Microsoft LifeCam Cinema webcam and works fine when I boot into Windows. The mic will not record sound in krecord or lame and doesn't work during Skype sessions.
According to the literature for the device driver my the mic should be supported, and that is evidenced by the fact that the mic shows up as a capture device in in kmix. I have made this mic the master channel under capture devices and I have given it highest preference amongst my capture devices in both the Communications and Accessibility categories of kmix's Settings/Audio Setup.
There was a very similar case solved in January:
How I got my Sound Input working
I've done my best to implement these fixes, but half of it looks like gibberish to me. All I was really able to do was update my alsa software and generate this comprehensive alsa.conf (its long, so I'll wait to post it until asked).
I've had since updating to 11.4, and I gotta say: I've been really impressed so far.
I'm trying to write a bash script for gpodder to automatically convert video podcasts to play on my media player. I'm using ffmpeg for the conversions (compiled myself with all codecs enabled). I'd like to avoid resampling the video or audio whenever it's unnecessary but ffmpeg seems to want to resample my video even if I only give it audio parameters to change.For example I have a test video with the following parameters:
Code:
Stream #0.0(eng): Video: h264, yuv420p, 640x480, 1394 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 159 kb/s
[code]...
So I got myself a USB capture card (EasyCap) to use for capturing gaming, digitizing my kids' old VHS movies, etc. It works fine, I've been using VLC to view and record stuff from it, but I've noticed one issue. When recording streams via VLC, even with no other programs running to give VLC as much CPU time as it wants, the audio slowly falls out of sync. I've tried the MP4 (H264/MP3) container and the OGG (Vorbis/Theora) container.
Early on you can't hardly tell, but the further into a movie you get the more out of sync the audio gets, so that by the end of the movie the audio is a good 1-2 seconds off. It's not a set amount either so I can't just split the audio to a separate file then shift it one direction or the other to make up for the difference, because like I said, the offset starts out at nothing and gets progressively larger as the movie goes on. When I select "display locally", the video/audio that is displayed stays in sync, only the video/audio that gets committed to the output file falls out of sync, and it doesn't matter if I play the file with Totem or VLC.
I'm trying to capture my desktop screen and audio , before I used xvidcap but after upgrading my system I can not use it and also recordmydesktop anymore these APPs hanged when I try to use them.Now I try to use recorditnow via ffmpeg recorder interface , it work properly in recording the desktop but it does not record the sound , so I tried to add below options to its command -f alsa -ac 2 -i hw:0,0 but it just record sound at the beginning and just for 1 second. Also when I try to capture my desktop with ffmpeg directly from command line with below command I face with same problem!!! ffmpeg -f x11grab -s 1024X768 -r 30 -i :0.0 -f alsa -ac 2 -i hw:0,0 ~/out.mpg
View 9 Replies View RelatedThe Green jack for audio of the sound card is dead. The other jacks [Blue and Pink] are not working for audio. I have them working as audio outputs in windows xp-using the Realtek interface.How can I do the same in Ubuntu?
View 9 Replies View Relatedi am using Ubuntu 11.04 on my computer system. I urgently need a good video converter for converting videos.I have already installed FFmpeg and men-coder,Winff etc. The problem is each has its own drawback.For instance ffmpeg cannot convert a .avi to .3gp with audio working. My preferences are the converter should be user friendly, should support all popular video formats.
View 2 Replies View RelatedI'm using openSUSE 11.2 KDE on a Fujitsu-Siemens Amilo Pi 1536 laptop. My problem is that my microphone (I'm attempting to use a 3.5mm headset) doesn't work. Audio playback however does work through the built-in speakers and headphones.
I have gone through the SDB:AudioTroubleshooting - openSUSE as suggested by oldcpu on the Welcome to multimedia sub-area sticky.
I have tested audio recording with
Code:
arecord -vv -fdat foo.wav resulting in a silent recording. The vumeter showed 0% during the recording.
Here is my url produced by the alsa-info script:[URL]
rpm -qa '*alsa*'
Code:
alsa-plugins-1.0.21-3.3.i586
alsa-1.0.21-3.2.i586
alsa-oss-1.0.17-25.2.i586
alsa-devel-1.0.21-3.2.i586
[Code].....
I am fed up of listening to my (Windows XP) gaming computer through headphones so I want to get it hooked to the stereo.
Rather than use a heck of a lot of wire, I can sit my Ubuntu 9.10 netbook on top of the stereo and stream the audio across WiFi.
So, ideally what I am after is something to capture the outgoing audio on the Windows computer, stream it across the wifi to the Ubuntu netbook and finally play it through the speakers.
The sort of add on for Firefox 'download helper' now has a new screen capture thing, in case it won't download the video from a particular site. You click the red button and a purple boundary appears round the video frame. I assume this is the basic function of the thing; it then provides the geometry of the purple frame to the program you've given it to capture the video.
By default the program it uses is 'recordmydesktop'. I've tried using this but get sound from the laptop's internal microphone, not the video. Tried 'pavucontrol' to remedy this but it says (wrongly) that no program is recording, so can't put things right.
So tried using ffmpeg: [URL]
Assume the stuff in curly brackets is what download helper supplies. Sometimes works perfectly but with B.BC. i-player only get the top left hand corner of the video and it is stretched somewhat horizontally.
I am using ffmpeg for merge wav files to a mov video. My doing is below
1. First extract audio (wav file) from video
2. Create wav file from mp3 track 1
3. Create wav file from mp3 track 2
4 Merge extract audio from video with track 1 and track2.
Now finally create a new video with original video's video stream and merged audio stream.
Process is working. However final video is 3-4 times greater than original one. I want that final video should be near about size of original video. As I understand, all three wav files (created from ) make video larger.
Example commands i using is as below: