Grab sound of a SDL game with ffmpeg/avconv

Posted by Peregring-lk on Ask Ubuntu See other posts from Ask Ubuntu or by Peregring-lk
Published on 2013-11-04T03:53:51Z Indexed on 2013/11/04 4:13 UTC
Read the original article Hit count: 302

Filed under:

alsa

|

ffmpeg

|

avconv

|

sdl

I'm trying to make a screencast of a SDL game which I developed some years ago, with the following command:

sleep 5 && avconv -f x11grab -s 1366x768 -r 25 -i :0.0 -same_quant screen_cast.mkv

(in this 5 seconds of sleep, I open the game).

But the generated video (screen_cast.mkv) doesn't capture audio.

I use for my game the SDL_Mixer library, with default configuration (22050 for frequency, AUDIO_S16SYS for format, and 2 channels).

What's the problem? (with options -f alsa -i pulse it doesn't work either).

© Ask Ubuntu or respective owner

Related posts about alsa

Opening Skype, Opera, OpenOffice logs me off

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Whats common among Skype, Opera, OpenOffice in Ubuntu ? Whenever I open these applications I get logged off and shows back me the login screen. This started happening since the 10.10 upgrade. Forgot to mention : Yes, its x64.Each time I open these applications, the UI shows and then crashes. I… >>> More
Pulseaudio is no longer working in Debian Squeeze: 'Failed to open module "module-combine-sink": file not found'

as seen on Super User - Search for 'Super User'
I'm having a problem with pulseaudio. My machine crashed, and when I rebooted and ran pavucontrol, I got a "Connection Failed: Connection refused" dialog. When I run pulseaudio --log-level=info --log-target=stderr from the command line, I get the following output: [...] I: alsa-util.c: Error opening… >>> More
Google Chrome freezes for seconds

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I do not know if this is the right place to write about google chrome or not so sorry if it is not after the update ,,Google Chrome 20.0.1132.47" google chrome started to lag ,,It gets stuck for couple of seconds and then it resumes" i think it starts lagging when i enter any flash site when i… >>> More
Errors from ALSA during Arch Linux boot

as seen on Super User - Search for 'Super User'
Everytime I boot my Linux system, I get these errors while ALSA boots. Despite these, the sound still works, so these are more of an annoyance than anything. How do I stop these occuring? Unknown hardware: "HDA-Intel" "IDT 92HD73C1X5" "HDA:111d7675,10280256,00100202" "0x1028" "0x0256" Hardware is… >>> More
Alsa devices under Wine

as seen on Super User - Search for 'Super User'
Hi all, I'm running OpenSuse 11.2 and Wine 1.1.28. Even if audio is perfectly working fine for me (Skype, Banshee, etc), when I try to configure audio for Wine (to use Spotify) I cannot hear anything from the audio test. In the winecfg audio tab, ALSA is checked, but no devices are available. I… >>> More

Related posts about ffmpeg

how to install ffmpeg in cpanel

as seen on Super User - Search for 'Super User'
i'm using dedicated server(linux) so i need to install ffmpeg in cpanel so here ffmpeg i found in Main Software Install a Perl Module but i writing script in php so how can i install ffmpeg phpperl when i'am trying to install ffmpeg in perl module i get this response Checking C compiler… >>> More
FFMpeg-PHP Installation Error

as seen on Server Fault - Search for 'Server Fault'
While installing FFmpeg-PHP, I got this interesting error: /usr/downloads/ffmpeg-php-0.6.0/ffmpeg_movie.c: In function 'zim_ffmpeg_movie_getAudioStreamId': /usr/downloads/ffmpeg-php-0.6.0/ffmpeg_movie.c:1051: error: 'CODEC_TYPE_AUDIO' undeclared (first use in this function) /usr/downloads/ffmpeg-php-0… >>> More
git problems installing stuff [closed]

as seen on Super User - Search for 'Super User'
root@Frenzen:~# cd root@Frenzen:~# git clone --depth 1 git://source.ffmpeg.org/ffmpeg Initialized empty Git repository in /root/ffmpeg/.git/ root@Frenzen:~# cd root@Frenzen:~# git clone --depth 1 git://source.ffmpeg.org/ffmpeg Initialized empty Git repository in /root/ffmpeg/.git/ root@Frenzen:~#… >>> More
Unable to install ffmpeg-php

as seen on Server Fault - Search for 'Server Fault'
I followed the instructions on http://www.mysql-apache-php.com/ffmpeg-install.htm but ffmpeg-php does not show up in my phpinfo() The commands I ran (in order) #yum install ffmpeg ffmpeg-devel ... Public key for faac-1.26-1.el5.rf.x86_64.rpm is not installed #rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0… >>> More
Unable to install ffmpeg-php

as seen on Server Fault - Search for 'Server Fault'
Hi, I followed the instructions on http://www.mysql-apache-php.com/ffmpeg-install.htm but ffmpeg-php does not show up in my phpinfo() The commands I ran (in order) #yum install ffmpeg ffmpeg-devel ... Public key for faac-1.26-1.el5.rf.x86_64.rpm is not installed #rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0… >>> More