#recordmydesktop

[SOLVED]

file rmd_parseargc.c

tested with

sudo ./configure --prefix=/usr --enable-jack=yes LIBS=-ljack CFLAGS=-DHAVE_LIBJACK

jack_lsp  (command usefull)

193 { "use-jack", '\0', 194 POPT_ARG_STRING | RMD_USE_JACK_EXTRA_FLAG, &arg_return->x, RMD_ARG_USE_JACK,

replacing &arg_return->x with 0 fix this issue

193 { "use-jack", '\0', 194 POPT_ARG_STRING | RMD_USE_JACK_EXTRA_FLAG, 0, RMD_ARG_USE_JACK,

Today I had toiled my entire day to find a good screencast tool for my Debian wheezy. This statement clearly shows there are not too many good tools out there.

The tools which I tried are

Recordmydestop: Easy to install but it doesn't have a pause button and output format is ogv which is quite huge

Screenkast: Tried to install and got stuck with the following error "checking for Qt... configure: error: Qt (>= Qt 3.2) (headers and libraries) not found. Please check your installation!" I did my level best to find the exact reason for it as I had already installed dev version of the package.

I also came across the commands like

apt-cache search qt |grep --color header to identify the exact package needed to install, this was something new to me.

But actually I was trying to install something that will work in KDE on a GNOME. Yes you are right screenkast works in KDE and not in Gnome.

xvidcap: This is pretty old one and its still trying to use oss dev/dsp device for input source of audio but in order to Pulse audio to process this you should use a wrapper called padsp to communicate it with pulse audio

#padsp xvidcap to remove the error and padsp is wrapper which will pass the old oss device and transparently bypasses it to pulse audio.

Some concepts learned

ALSA provides an API for sound card device drivers. It is part of the Linux kernel

OSS is the first sound system used in Linux but now it has been deprecated

Pulse Audio is a sound server

Kazam: I have tried to install using its ppa but unfortunately it didn't work. Then tried to install from source, it required python3.2 but again faced so many errors in python modules. The next option was to search to install from a thirdparty repo crunchbag

Followed these steps.

wget http://packages.crunchbang.org/statler-dev/crunchbang.key apt-key add crunchbang.key

Add these two source lines to your /etc/apt/sources.list deb http://packages.crunchbang.org/waldorf waldorf main deb-src http://packages.crunchbang.org/waldorf waldorf main

aptitude update aptitude install kazam

To get your mic working I chose Audio Source

Built in Audio Analog Stereo

When you want to record a screencast or a webinar you usually find some issues related with sound.

As my search on Google didn't gave any results on that I'm gonna write it down.

Steps:

Install recordMyDesktop and pavucontrol from repos

run pavucontrol

Go to the "Input devices" tab and change the "Show:" to "All input devices".

Choose "Monitor of built-in" and mark the green ball of "Set as fallback"

Mute the microphone if you do not want to record yourself. (Useful for webinars)

Start recordMyDesktop, activate the sound checkbox and start recording.

Do a test and play the results before recording all the full piece as sometimes you misconfigure something and could lose the chance to record it.

Tips (or don't fail on the same as me)

Block any notification or app that can grab the focus during recording:

Google Gmail web and Google calendar webs. Close all the browsers except the one you want to record.

Stop the automatic updates as explained here: http://www.garron.me/en/linux/turn-off-stop-ubuntu-automatic-update.html but remember to set it back after.

Spotify grabs focus on some events that are not really clear.

Chats that make sounds or can open the window on the top.

Screen recordings from recordmydesktop are blurred and have mismatched colors because of sub sampling. Use 4:4:4 for sharp videos instead.

screencasts : XVidCap and RecordMyDesktop : audio device setting