Talk:Mythbuntu
PlaybackBuiltinAudioAnalogStereoPulseAudioMixer
ALSA:dmix:CARD=PCH,DEV=3
sudo bash gnome-control-center sound pavucontrol aplay /usr/share/sounds/alsa/Front_Center.wav
Playing WAVE '/fc.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
speaker-test -c 2 -r 48000 -D hw:0,3 aplay -D plughw:0,3 /fc.wav alsamixer
Contents
sound config files
- /etc/modprobe.d/alsa-base.conf
- /etc/pulse/default.pa
- Start PulseAudio: start-pulseaudio-x11
- Stop PulseAudio: killall pulseaudio
ubuntu version
# lsb_release -a Ubuntu 12.04.3 LTS precise
HDMI Audio with Intel PCH
To verify your HDMI is on #3 do:
sources:
VLC VideoLAN Player for MythTV playback
vlc as default video player for mkv files
screen blanking
> (screensaver and DPMS). > > Please type "xset q" ... and these two sections are interesting: > > [...] > Screen Saver: > prefer blanking: yes allow exposures: yes > timeout: 600 cycle: 600 > [...] > DPMS (Energy Star): > Standby: 240 Suspend: 240 Off: 240 > DPMS is Enabled > Monitor is On > [...] > > To completely disable screen-saver and DPMS: > > xset dpms force on > xset -dpms > xset s off > > "xset q" should print now: > [...] > Screen Saver: > prefer blanking: yes allow exposures: yes > timeout: 0 cycle: 600 > [...] > DPMS (Energy Star): > Standby: 240 Suspend: 240 Off: 240 > DPMS is Disabled > [...] > > > This works for some boxes running several days. >
xset and reboot
for your current session, copy/paste these commands one at a time in a terminal... Code:
xset -dpms xset s noblank xset s off
If that works and you want it to persist on reboot, you'll need to create/modify the file /etc/X11/xorg.conf. If you don't have the file create it and add the following, if you do have that file add the following under Section "Monitor", leaving out the Section "Monitor" and EndSection lines... Code:
Section "Monitor" Option "NODPMS" EndSection
Reboot and see if it works. If not, try these lines, again leaving out the Section/EndSection lines if you already have those sections and rebooting afterwards... Code:
Section "Monitor" Option "DPMS" EndSection Section "ServerLayout" Option "BlankTime" "0" Option "StandbyTime" "0" Option "SuspendTime" "0" Option "OffTime" "0" EndSection
transcoding, re-encoding, compressing, and archiving
Transcoding is when you decode video compressed in one format, and re-encode it in another. Usually, it's done for 2 reasons:
Removing Commercials - decompressing a compressed video, removing the parts marked to be removed (the commercials) and re-encoding the video stream, to the original or to a different video encoder using a codec.
To free up hard disk space; by reducing the quality or changing the encoding of the video to a more efficient codec (or a combination of these) space can be saved.
references;
discussion on transcoding to H.264
