Thursday, July 31, 2014

Playing Audio on RPi


If omxplayer's auto-detection of the correct audio output device fails, you can force output over hdmi with:

$ omxplayer -o hdmi example.mp3

or you can force output over the headphone jack with:

$ omxplayer -o local example.mp3


To troubleshoot the sound module::
$ lsmod | grep snd_bcm2835
$ sudo modprobe snd_bcm2835

To load the sound module automatic:
cd /etc
sudo vi modules

# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be
# loaded at boot time, one per line. Lines beginning with "#" are
# ignored. Parameters can be specified after the module name.

snd-bcm2835


By default the output is set to automatically select the default audio interface (HDMI if available otherwise analog). You can force it to use a specific interface using :
$ amixer cset numid=3 n

Where <n> is the required interface : 0=auto, 1=analog, 2=hdmi. To force the Raspberry Pi to use the analog output :
$ amixer cset numid=3 1


To play a WAV file using aplay:
$ aplay police_s.wav


To play an MP3 file using mpg123:
$ sudo apt-get -y install mpg321
$ mpg321 bubbling_water_1.mp3
$ mpg321 -g 50 bubbling_water_1.mp3     # [ volume 50% ]


To play a MP3 file using Imxplayer:
$ sudo apt-get -y install omxplayer
$ omxplayer bubbling_water_1.mp3

The plus (+) and minus (-) keys can be used to adjust the volume of the playback.

Friday, July 25, 2014

rundll32 + javascript + calc

Got this from a friend.

rundll32.exe javascript:"\..\mshtml,RunHTMLApplication ";document.write("\74script language=jscript.encode>"+(new%20ActiveXObject("WScript.Shell")).Run("calc.exe")+"\74/script>")

start calc.exe

Google Chrome Silent Installer at TechNet

Just found a Google Chrome silent installer (36.0.1985.125) today. Yes, it is at Microsoft TechNet.

http://gallery.technet.microsoft.com/Google-Chrome-version-f0619a1f

Google Chrome at TechNet

Wednesday, July 16, 2014

Shutdown, Restart, Logoff, and Hibernate Remote Windows PC

Shutdown Remote PC
Shutdown.exe -s

Restart Remote PC
Shutdown.exe -r

Logout Remote PC
Shutdown.exe -l

Hibernate Remote PC
Shutdown.exe  /h