whats happening in graphics world

1.ATI vs NVIDIA
2.h264,hardware codec
3.http://labs.divx.com/DivX-H264-Decoder-DXVA

Note:
All OS's provide a graphics framework
A thirdparty provider can add their codec support in the framework
A thirdparty provider can add their hardware support in the framework

oem A can add their card with hardware codec-B support
oem B can add support for converting their proprietery format-C to codec-B again using the framework

similarly for A1,A2...
codec-B1,codec-B2 etc

frameworkB component and frameworkA component (frameworkB can be dll,frameworkA maybe .sys)

there will be a general OS framework(opencore),then for video and sound there can be other separate frameworks (video v4l,audio alsa)

opencore,gstreamer are os framework

wireless bridge repeat

1.bridge -- routers comm with each other over wifi,no clients can connect,use ethernet ports to transfer data from one AP to next
2.repeater --- aps can connect among themselves and connect from a laptop with client

1.wg 602 - g -- 1 lan
2.wn 802 - N --
3.wpn 802 -- g --

ADSL pci card ubuntu
1.conexant adsl pci modem
pppoe

voice modem ubuntu asterisk
2.Digium x100p
Linksys SPA3102
D500

setup voip phone to pstn switch
1.http://asteriskathome.sourceforge.net/handbook/#Section_3.2

using vlc,darwin to stream to mobile

1.http://lists.apple.com/archives/streaming-server-users/2005/Jul/msg00097.html
2.http://wiki.videolan.org/Documentation:Streaming_HowTo/Streaming_a_live_video_feed_to_Darwin_Streaming_Server_for_Mobile_Phones

firewire as a v4l device

1.https://bbs.archlinux.org/viewtopic.php?id=43204

big picture
1.vloopback is a converter for firewire type to v4l type device,install it
2.install firewire device
3.vloopback detects it
4.v4l detects it
5.firewire is used like a v4l node by any v4l application

1.vlc is an interface
2.v4l is the engine used by vlc

linux v4l big picture

backend
1.v4l server is a in/out switch,dashboard
2.every capture device is a node on v4l, /dev/video0,/dev/dsp2
3.video is that nodes video details struct referred by symbolic name (details of type,channel table ,freq )
4.inputs ---- links a video details to capture device

frontend
1.input device --- stream encoding
2.output device ---- encoding audio/video

firewire streaming from dvcam

1.http://rdfintrospector2.blogspot.com/2009/04/firewire-vlc-streaming.html

ubuntu firewire panasonic pvgs29

1.modprobe ohci1394
modprobe raw1394
chmod 777 /dev/raw1394
testlibraw
-->should show 1 node with cam not connected/switched off
-->will show 2 nodes with cam connected/on

remove other cards on pci slot
try all firewire ports one by one

2.
chmod 777 /etc/modules; echo "raw1394" >> /etc/modules; echo "dv1394" >> /etc/modules; echo "video1394" >> /etc/modules; chmod 644 /etc/modules;

3.
gedit /lib/udev/rules.d/50-udev-defa­ult.rules

in the #firewire section add the following line at the end:
KERNEL=="raw1394", GROUP="video"

4.
usermod -G video -a YourNameGoesHere;

5.
Then Reboot and your camcorder should be recognised by kdenlive or Kino and ready for capture

6.
apt-get install libiec61883-dev
apt-get install libavc1394-dev

aplay -L

apt-get install mplay