The good old ffmpeg, along with being able to capture sound and video from your Linux Desktop or a certain Window and Skype whatever WebCamera input is also able to record sound from both camera or embedded laptop microphone. Here is how:
This as you can see from arguments, uses GNOME's pulseaudio (audio service) and ALSA. Sound is first streamed through alsa and then the sound inflow is passed to be processed and multipled in a separate sound channel by pulseaudio. This method though said to be working fine on Ubuntu Linux is not working well on some other Linux distributions like Debian if one is using ALSA configured to use a software sound multiplexor via the so called – alsa dsnoop interface(previously I write how to use it in order to make Skype and other programs use SoundBlaster proper – article is here)
Below is the output warning I got whether trying ffmpeg with -f alsa and -i pulse arguments:
where concrete programs, are run which take use of OSS (Open Sound System) – an already obsolete sound architecture. By the way on current Debian / Fedora etc. Linux-es OSS is managed and played only, whether few kernel modules are already pre-loaded, below are the ones as pasted from my Debian Squeeze:
The oss processed sound recording from ffmpeg is not working, well on my Linux, cause I have my custom (non-Debian) native binary Firefox downloaded and installed from Firefox's website.The browser is compiled to open automatically /dev/dsp which in practice uses the above-mentioned OSS listed modules, which on their behalf when used break out the sound processed by alsa and respectively pulseaudio (those who use Linux for longer time should remember in the times of OSS only one certain sound stream was possible to be processed / played on Linux historically before ALSA come to scene to be "defacto" standard kernel sound processor. Well ofcourse firefox developers who compiled the Firefox for Linux probably was using Slackware or some other Linux distro which probably used to play sound still via OSS or maybe they compiled it so thinking OSS because of its historical importance is still supported by more Linux distributions than alsa is. I like the custom compiled Firefox to run on my Debian instead of default Debian Squeeze (IceWeasel) cause firefox.org ,Firefox version is much newer and supports better latest HTML5 as well as it includes ability to download and apply automatic updates to the latest version provided by Firefox team. However I fou
Thus for Linux users like me using latest firefox binary from firefox.org (in parallel) with opened Firefox browser to record sound from Webcam or Embedded notebook mic the obsolete OSS has to be used, here is how:
Today it is considered the modern laptop (portable computers) are turning 30 years old. The notebook grandparent is a COMPAQ – GRiD Compass 1011 – a “mobile computer” with a electroluminescent display (ELD) screen supporting resolution of 320×240 pixels. The screen allowed the user to use the computer console in a text resolution of 80×24 chars. This portable high-tech gadget was equipped with magnesium alloy case, an Inten 8086 CPU (XT processor) at 8Mhz (like my old desktop pravetz pc 😉 ), 340 kilobyte (internal non-removable magnetic bubble memory and even a 1,200 bit/s modem!
The machine was uniquely compatible for its time as one could easily attach devices such as floppy 5.25 inch drives and external (10 Meg) hard disk via IEEE-488 I/O compatible protocol called GPiB (General Purpose instrumental Bus).
The laptop had also unique small weight of only 5 kg and a rechargable batteries with a power unit (like modern laptops) connectable to a normal (110/220 V) room plug.
,br /> The machine was bundled with an own specificly written OS GRiD-OS. GRID-OS could only run a specialized software so this made the application available a bit limited. Shortly after market introduction because of the incompitablity of GRID-OS, grid was shipped with MS-DOS v. 2.0. This primitive laptop computer was developed for serve mainly the needs of business users and military purposes (NASA, U.S. military) etc.
GRID was even used on Space Shuttles during 1980 – 1990s. The price of the machine in April 1982 when GriD Compass was introduced was the shockingly high – $8150 dollars.
The machine hardware design is quite elegant as you can see on below pic:
As a computer history geek, I’ve researched further on GRID Compass and found a nice 1:30 hour video telling in detailed presentation retelling the history.
Shortly after COMPAQ’s Grid Compass 1011’s introduction, many other companies started producing similar sized computers; one example for this was the Epson HX-20 notebook. 30 years later, probably around 70% of citizens on the globe owns a laptop or some kind of portable computer device (smartphone, tablet, ultra-book etc.).
Most of computer users owning a desktop nowdays, owns a laptop too for mobility reasons. Interestengly even 30 years later the laptop as we know it is still in a shape (form) very similar to its original predecessor. Today the notebook sales are starting to be overshadowed by tablets and ultra-books (for second quarter laptop sales raised 5% but if compared with 2011, the sales rise is lesser 1.8% – according to data provided by Digital Research agency). There are estimations done by (Forrester Research) pointing until the end of year 2015, sales of notebook substitute portable devices will exceed the overall sales of notebooks. It is manifested today the market dynamics are changing in favour of tabets and the so called next generation laptops – ULTRA-BOOKS. It is a mass hype and a marketing lie that Ultra-Books are somehow different from laptops. The difference between a classical laptop and Ultra-Books is the thinner size, less weight and often longer battery use time. Actually Ultra-Books are copying the design concept of Mac MacBook Air trying to resell under a lound name. Even if in future Ipads, Android tablets, Ultra-Books or whatever kind of mambo-jambo portable devices flood the market, laptops will still be heavily used in future by programmers, office workers, company employees and any person who is in need to do a lot of regular text editting, email use and work with corporative apps. Hence we will see a COMPAC Grid Compass 1011 notebook likes to be dominant until end of the decade.
On Tuesday Zlati (A friend of mine introduced to me by Father Veliko), came to Arnhem. The plan was that he came on Tuesday here and afterwards in Wednesday morning the Trip to Amsterdam was going to happen. First we had settled that he will be in Arnhem in 12:00 o’clock. So Around 10:50 I walked down the way to the trainstation. I was on my way when Zlati ringed and told that he still, haven’t catched the train and he is not going to make it for 12:00, though he will be on Arnhem Central Station in 04:35 in the afternoon. I came back to home and on my way bought some apples as well as a oily sweet thing from the Turkish shop “Sultan” 🙂
Around 3 I took my way to the city center again, on my way I had toleave Sali’s laptop in his home. I had taken his laptop to re-install Windows and setup his Windows in Bulgarian as well as configure it to be able to watch Bulgarian TV channels online. In order to achieve that I used a proxy donated to me by Amridikon. Thanks Amri!
To make Windows Vista Home Premium to Bulgarian I had to use a small proggie “Vista Change Language 1.0”. I had to burn the program to a CD and boot into it and then use the downloaded language pack to change the vista text language to Bulgarian. I did so all went well, unfortunately after an upgrade the text in the menus did screw up. So I have to boot again in the Vista Change Language 1.0 boot CD and revert it back to Bulgarian. Then I had to disable Windows Vista updates in order to prevent the same language mess up to occur again. This was a little out of the topic, but I decided it’s nice to have it on paper.
So back to where I was with my TTA .. I took Zlati from the train station,we went to Sali and he treated us with some kind of traditional turkish soup meal. The soup was quite nice btw. He was extremely happy that he could watch Bulgarian TV’s online through the bg.gledai.tv website. I was glad to that God helped me and blessed me in succeeding in all the things I mentioned above. Afterwards we went with Zlati and Koko to Albertheijn picked up a beer and a couple of other things. Then I and Zlati went to my place where we used my notebook to research about places of Interest, we would like to attend in Amsterdam. We went to bed around 2 o’clock at night.
At the morning we went to the train station. I suggested that we go a little earlier because I thought, well it might be better to be earlier in the city for to have more time to walk and take a look at its significant things in it. We were on the train station 8:10 and had the intention to take the first train at 8:29, however God had other plans for that.It seemed that we have to wait and buy a ticket for after 9:00, otherwise Zlati couldn’t use his train card for my discount.He was quite irritated by the fact that I suggested that we went to the train station so early since he was quite sleepy in the morning because we went to bed so late.
Anyways I got a coffee from the trainstation waiting-room coffee machine.And, eh the coffee there is expensive, be careful if you travel in the Netherlands by train.
The coffee costed 1.50 per cappuchino, huh … We catched a train in 9:29 and we were in the capital of Amsterdam in 10:40. I was so excited! Yes the trip worthed the price of 16.30 EUR (with the 40% discount). Amsterdam is a really nice city, especially considering it’s architecture. And I saw such a big shops and so many things to choose from … The whole city is full of canals and boats are traveling through it. We went to music store, wow there was so much music in it. We entered a lot of Catholic Churches in one of the Catholic Churches there was an orthodox icon of St. Nickolas! So I made the sign of the cross and prayed the Saint to pray God for me the sinner. With our arrival right after we went out of the central station I saw a bookstore,so I proposed Zlati to enter. It seemed that was a protestant Christian bookstore. Even though a protestant one the people there at least were believing in our Lord and Saviour Jesus Christ.
I had a small chat with one of the guys asking if they have Orthodox Bible, It seemed they haven’t so I started telling him about the advantages of being Orthodox Christian. I explained him how I became orthodox after God gave me the faith and transformed my life. The bookstore had a free/coffee and tea.So each me and Zlati took a cappuchino. It was so nice God gave me a hot drink in the Early morning in Amsterdam. A lot of people are insane in that place, I saw a lot of pod smokers on the street.
On a lot of places the air had that typical pod stell. We saw a lot of Museums, we tried to use a citymap although in a lot of cases un-succesful. We saw so many Churches, Madam Tusad’s museum,as well as Anne Frank museum, the tulip museum. There was also sex, museums we saw on our way and even this freaks had gay museum. We saw some road building in progress where a couple of people were building a road on top of pillars, right above the water! 🙂 The city is full of old buildings most of which originating from 16th century. The Architecture is really amazing. The parks and everything and the terraces had that typical European style which I’ve seen in movies showing people from the 18thor 19th century drinking coffees on the balconies. We took a lot of pictures. Unfortunately I still haven’t taken the pictures from Zlati. We entered into a shop which was selling buddhist, hindu and indian statues and souvenirs to warm a bit as the weather outside was coldy. There we had a nice chat with the storekeeper, about religion and about my Orthodox faith in Our Lord Jesus! He mentioned that near around there is an Syrian Orthodox Church. So went to seek for it. After some rambling we found it but unfortunately it was already closed the time was quite late over 18:00, so it was quite normal to be closed.The style of the Church didn’t really much differentiated from the rest of the Catholic Churches.
Earlier we went into a Church, whether they had that modern exposition, again we went their to warm ourselves (it was such a cold day).
The Church inside was nice but the pictures,they was selling on the expo was really terrible, a lot of sado-mazo and perverted motives in the pictures …
I was saddened to see that they have de-sacrated a holy place like that. Well it’s true that the Roman catholics stepped aside from the orthodox faith some time ago but still they are believing Christians and therefore there temples are holy to some degree too … therefore such an abomination really shouldn’t happen.
The good thing was that in the Church they even had made toilets inside the church we could use 🙂 The Church wall paintings were displaying the way our Lord Jesus has walked on it’s way to final execution by the jews, carrying his cross on the way to Golgotha.
Around 18:30 we went to the street where the so famous prostites and drug addicts street was the “RED LIGHTS” – so famous all around the world ….
I couldn’t believed my eyes, prostites staying behind windows half naked waiting for a customer to hire them for sex …I have heard about that place but I really couldn’t imagine it could legally exist in the center of a metropolitan city like Amsterdam.
We walked in that “wicked” part of the city for around hour. There were all kind of junkies people who looked really criminal, the prostitutes on the windows. Sex shops, sex video rooms, you name it .. all the disgusting stuff you could imagine. After this walk we went to the train station around 8:00 and took the train back to Arnhem. The whole day went quite flawless,God has heard our prayer to keep us from evil and give us safe journey.The whole trip was really relaxing for me! Praise the Lord for his great mercy towards me the sinner for giving my eyes to see all this things!
A friend of mine has Fujitsu Siemens Amilo laptop and is full time using his computer with Slackware Linux.
He is quite happy with Slackware Linux 13.37 on the laptop, but unfortunately sometimes his screen brightness lowers. One example when the screen gets darkened is when he switch the computer on without being plugged in the electricity grid. This lowered brightness makes the screen un-user friendly and is quite tiring for the eye …
By default the laptop has the usual function keys and in theory pressing Function (fn) + F8 / F7 – should increase / decrease the brightness with no problems, however on Slackware Linux (and probably on other Linuxes too?), the function keys are not properly recognized and not responding whilst pressed. I used to have brigtness issues on my Lenovo notebook too and remember how irritating this was. After a bit of recalling memories on how I solved this brightness issues I remembered the screen brigthness on Linux is tunable through /proc virtual (memory) filesystem.
I took a quick look in /proc and found few files called brightness:
/proc/acpi/video/GFX0/DD01/brightness
/proc/acpi/video/GFX0/DD02/brightness
/proc/acpi/video/GFX0/DD03/brightness
/proc/acpi/video/GFX0/DD04/brightness
/proc/acpi/video/GFX0/DD05/brightness
cat-ting /proc/acpi/video/GFX0/DD01/brightness, /proc/acpi/video/GFX0/DD03/brightness, /proc/acpi/video/GFX0/DD04/brightness all shows not supported and therefore, they cannot be used to modify brightness:
bash-4.1# for i in $(/proc/acpi/video/GFX0/DD0{1,3,4,5}/brightness); do \
cat $i;
done
<not supported>
<not supported>
<not supported>
<not supported>
After a bit of testing I finally succeeded in increasing the brightness. Increasing the brightness on the notebook Intel GM965 video card model is done, through file:
/proc/acpi/video/GFX0/DD02/brightness
To see all the brightness levels the Fujitsu LCD display supports:
As you can see the dark screen was caused cause the current: brightness is set to a low value of 25. To light up the LCD screen and make the screen display fine again, I increased the brightness to the maximum level 100, e.g.:
Here is also a tiny program that reduces and increases the notebook laptop brightness written in C. My friend Dido, coded it in just few minutes just for the fun 🙂 To permanently solve the issues with darkened screen on boot time it is a good idea to include echo '100' > /proc/acpi/video/GFX0/DD02/brigthness in /etc/rc.local:
I've also written another Universal Linux Increase laptop screen brightness Shell script which should be presumable also working for all Laptop models running Linux 🙂
Got the 2 mark on Marketing Exam. Again I’m a looser. I dont’ have nor time nor desire to learn again for this exam.I think I’m not suitable for student. Today we was on a coffee with Mitko, Toto and Dido. Nothing special ordinary day.Yesterday we stayed in Mitko and was installing Gentoo Linux to his laptop. Gentoo’s grub was buggy or something,we didn’t succeeded running the kernel with GRUB, so we decided to switch to LILO. We were able to makethe maching bootable using LILO. Then there was an annying error with REAL_ROOT option. After a lot of wanderingediting of /linuxrc we found the mistake it was a mismatch in lilo a mistake we made writing in it we wrote therereal_boot instead of real_root. In the end everything worked okay. And I went home sleeping.I’m not sure where my life is going to again … I’m completely Lost in the Dark.END—–
Today I helped my cousing to fix his internet connection on a laptop. The laptop was running Vista. A real nightmare, this OS is really heavy and even messier than Windows XP. What else I’m trying to cope with life. Life is tough. What I can say….
Also I started a vsftp server on a FreeBSD box it took me some time because of configuration issues.
Right now I’mtrying to run a snort server still unsuccessfully for some reason the snort daemon does not start.
In the college everything is going in the old manner, except we have started studying Marketing II and another subject I forgot the name it is supposed to be something like statistics. The day was quiet with a bit of work.
There two main reasons which cause incorrect clock settings on Slackware Linux. One common reason for incorrectly set time is improper clock and timezone settings during Slackware install.
On install, one of the ncruses install menus asks an ambigious dialog question reading
HARDWARE CLOCK SET TO UTC? Is the hardware clock set to Coordinated Universal Time (UTC/GMT)?
Some newbie Slackware users make the mistake to choose YES here, resulting in incorrectly set clock.
Second possibility for improper time is incorrect time on BIOS level. This is not so common among laptop and modern desktop PCs. However in the past impoper system BIOS hardware clock was usual. In any case it is a good practice to check the system PC BIOS clock settings.
To check BIOS battery hardware clock from command line use:
bash-4.1# hwclock --show
Fri 24 Feb 2012 01:24:18 AM EET -0.469279 seconds
The system clock on Slackware is set via a script called timeconfig. To fix slack's incorrect host time run:
bash-4.1# timeconfig
Running timeconfig once should configure a proper timezone to be set on next system reboot, however the system time will probably still be not ok. To manually set time to right time, use date command. To set manually the system wide time to 12:00:00 with date:
bash-4.1# date -s "12:00:00"
Anyways for time accuracy the ntpdate should be used to feth time from NTP internet time server:
bash-4.1# ntpdate time.nist.gov
...
Finally to make the new set right time permanent also for the BIOS battery clock issue:
bash-4.1# hwclock --systohc
By the way its curious fact Slackware Linux is the oldest still existent GNU / Linux based distribution. Its up and running since the very day GNU and Linux came to merge at one Free OS 😉
Does your camera show video correctly in cheese but shows captured video upside-down (inverted) in skype ? This is an issue a friend of mine experienced on his Asus K51AC-SX037D laptop on both Ubuntu and Debian Linux. As you can see in the picture above it is funny as with this bug the person looks like a batman 😉 As the webcam upside-down issue was present on both latest Ubuntu 11.10 and latest stable Debian Squeeze 6.02, my guess was other GNU / Linux rpm based distro like Fedora might have applied a fix to this weird Skype inverted video (bat human like) issue. Unfortunately testing the webcam with Skype on latest both Fedora 16 and Linux Mint 12 appeared to produce the same webcam bug.
A bit of research for the issue online and try outs of a number of suggested methods to resolve the issue led finally to a work around, thanks to this post Here is few steps to follow to make the webcam show video like it should:
1. Install libv4l-0 package
root@linux:~# apt-get --yes install libv4-0
...
Onwards to start skype directly from terminal and test the camera type:
This is the work around for 32 bit Linux install, most people however will probably have installed 64 bit Linux, for 64bit Linux installs the above command should be little different:
3. Edit the Skype gnome menu to substitute /usr/bin/skype Skype Launcher with /usr/local/bin/skype
Gnome 2 has a handy menu launcher, allowing to edit and add new menus and submenus (menus and items) to the Application menu, to launch the editor one has to click over Applications with last mouse button (right button) and choose Edit Menus
The menu editor like the one in the below screenshot will appear:
In the preceeding Launcher properties window, Command: skype has to be substituted with:
Command: /usr/local/bin/skype
For console freaks who doesn't want to bother in editting Skype Launcher via GUI /usr/share/applications/skype.desktop file can be editted in terminal. Inside skype.desktop substitute:
Exec=skype
with
Exec=/usr/local/bin/skype
As one can imagine the upside-down video image in Skype is not a problem because of Linux, but rather another bug in Skype (non-free) software program. By the way everyone, who is using his computer with Free Software operating system FreeBSD, Linux etc. knows pretty well by experience, that Skype is a very problematic software; It is often a cause for system unexpected increased system loads, problems with (microphone not capturing), camera issues, issues with pulseaudio, problem with audio playbacks … Besides the long list of bugs there are unexpected display bugs in skype tray icon, bugs in skype messanger windows and at some rare occasions the program completely hangs and had to be killed with kill command and re-launched again.
Another worrying fact is Skype's versions available for GNU / Linux and BSD is completely out of date with its "competitor" operating systems MS Windows, MacOS X etc. For people like me and my friend who want to use free operating system the latest available skype version is not even stable … current version fod download from skype's website is (Skype 2.2Beta)!
On FreeBSD the skype situation is even worser, freebsd have only option to run Skype ver 1.3 or v. 2.0 at best, as far as I know skype 2.2 and 2.2beta is not there.
Just as matter of comparison the latest Skype version on Windows is 5.x. Windows release is ages ahead its Linux and BSD ver. From a functional point of view the difference between Linux's 2.x and Windows 5.x is not that much different, what makes difference is is the amount of bugs which Linux and BSD skype versions contain… Skype was about 6 months ago bought by Microsoft, therefore the prognosis for Skype Linux support in future is probably even darker. Microsoft will not probably bother to release new version of Skype for their competitor free as in freedom OSes.
I would like to thank my friend and brother in Christ Stelian for supplying me with the Skype screenshots, as well as for being kind to share how he fixed his camera with me.
Since I've blogged about my recent skype issues. I've played a lot with pulseaudio, alsa, alsa-oss to experimented a lot until I figured out why Skype was failing to properly delivery sound and record via my embedded laptop mic.
Anyways, while researching on the cause of my Thinkpad r61 mic issues, I've red a bunch of blog posts by people experiencing microphone oddities with Lenovo Thinkpads
Throughout the search I come across one very good article, which explained that in many cases the Thinkpad sound problems are caused by the snd-hda-intel alsa kernel module. snd-hda-intel fails to automatically set proper sb model type argument during Linux install when the soundcard is initialized with some argument like options snd-hda-intel model=auto
Hence, the suggested fix which should resolve this on many Thinkpad notebooks is up to passing the right module argument:
To fix its neceessery to edit /etc/modprobe.d/alsa-base.conf .
debian:~# vim /etc/modprobe.d/alsa-base.conf
Find the line in the file starting with: options snd-hda-intel model=
and substitute with:
options snd-hda-intel model=thinkpad
Finally a restart of Advaned Linux Sound Architecture (alsa) is required:
debian:~# /etc/init.d/alsa restart
...
At most cases just restarting the alsa via its init script is not enough, since the ssnd-hda-intel kernel module is already in use by some program or something, so its best to do a reboot to make sure the module is loaded with the new model=thinkpad argument.
Yesterday, one (girl)friend of mine brought me one Packard Bell notebook, which had a 2 years old Windows installed on it. As one can imagine Windows XP on it is full of Spyware and Viruses. Besides the software problems the notebook had some hardware problems with the CD / DVD which is not reading CD / DVDs at all.
Initially I thought, the CD unable to read problems are caused by the infected Windows, however even restarting the PC with a bootable Hirens BootCD and a Whoppix liveCD and trying to boot from it failed this convinced me its a CD / DVD combo drive hardware failure.
By the way, I’ve just recently found out about Nixory – Is a nice Free Software Open Source AntiSpyware tool for Firefox, IE and Chrome.
I hope it will get a sharp development and soon, when some friend asks me to fix his stupid non free-Windows PC, I would not have to use a trial version of Malware Bytes but directly use only Nixory
Anyways after using Nixory, MalwareBytes and Avira and thoroughfully scanned the system in Safe Mode and found and deleted some 15 Spyware / Viruses and tampered a bit with the Wireless Driver settings all the notebook devices started working fine again.
The wireless had also one really odd problem on this Packard Bell – Hera GL, even though the notebook wireless antenna was capable of detecting all the wireless networks it couldn’t properly connect to any of it but failed to get proper IP addresses. Partially the unable to grab an IP via wireless router dhcp server got fixed by using the Wireless restart Button (located on the Notebook corpus). However even after cleaning up the Virus and Spyware the Wireless Networks connectivity problems on this Packard Bell continued, until I changed also few settings in the Control PanelI never thought Viruses / Spyware infected can have some bad impact on Wireless Card and CD drive make them unsusable though they showed like working correctly in Windows Control Panel -> System ??
In the meantime I reinstalled the Wireless Driver for the notebook, the Wireless card on the notebook was showing up itself under the name of Ralink 802.11n Wireless Lan Card in Windows Device Manager
After re-installing the wireless driver I had to also change few settings for the Wireless Network Connection using the menus Properties -> Configure -> Extended; therein everywhere for each Value I make it be Enable and for Power Saving Mode , I’ve choose the Value option of CAM
After a system reboot, everything started working finally fine. One last thing to add is that before I fixed the Ralink wireless to work under Windows, I tried to use a Bootable Linux LiveCD but even there the wireless was failing to connect to the wireless networks (maybe this shit wireless device has some issues with its Linux drivers).
,br />
On Tuesday Zlati (A friend of mine introduced to me by Father Veliko), came to Arnhem. The plan was that he came on Tuesday here and afterwards in Wednesday morning the Trip to Amsterdam was going to happen. First we had settled that he will be in Arnhem in 12:00 o’clock. So Around 10:50 I walked down the way to the trainstation. I was on my way when Zlati ringed and told that he still, haven’t catched the train and he is not going to make it for 12:00, though he will be on Arnhem Central Station in 04:35 in the afternoon. I came back to home and on my way bought some apples as well as a oily sweet thing from the Turkish shop “Sultan” 🙂
