FON as bridge (讓FON跑橋接模式)

Mon, 02 Apr 2007 14:04:21 GMT

Login with a SSH client.
Save the following (modified from this script) as /etc/init.d/N15bridge. Modify the "# Set IP for the bridge" section to meet your needs.
#!/bin/ash
echo "Setting up LAN bridge"

# Kill DHCP server+ client
/usr/bin/killall dnsmasq
/usr/bin/killall -9 udhcpc

# create bridge interface
/usr/sbin/brctl addbr br0
/usr/sbin/brctl stp br0 off
/usr/sbin/brctl setfd br0 0

# shutdown/remove IPs from the old interfaces
/sbin/ifconfig eth0:1 down
/sbin/ifconfig eth0 0.0.0.0
/sbin/ifconfig ath1 0.0.0.0

# bring up the bridge interface
/sbin/ifconfig br0 up

# add the old interfaces to the bridge
/usr/sbin/brctl addif br0 ath1
/usr/sbin/brctl addif br0 eth0

# set IP of the bridge for FON remote admin
/sbin/udhcpc -i br0 -R # get new IP via dhcp
#/sbin/ifconfig br0 192.168.0.4 # remove the leading # to specify a static IP
#/sbin/route add default gw 192.168.0.254 # remove the leading # to specify the default gateway

# set firewall rules
iptables -I INPUT -i br0 -j ACCEPT
iptables -I OUTPUT -o br0 -j ACCEPT

# add bridge to hostapd.conf and restart hostapd (allows to use WPA)
echo bridge=br0 >> /tmp/hostapd.conf
/usr/bin/killall hostapd
/usr/sbin/hostapd -B /tmp/hostapd.conf

# restarting dnsmasq but without dhcp
dnsmasq
chmod +x /etc/init.d/N15bridge
vi /sbin/ifup, replace "wan_ifname=${wan_ifname:-eth0}" with "wan_ifname=${wan_ifname:-br0}", save the file.
Go to www.fon.com, log in and update shared bandwidth.
reboot

If /sbin/ifup has been updated in future updates, you must modify it again after the update and reboot.

Nero AAC Codec - A Free MPEG-4 Audio Encoder

Thu, 14 Dec 2006 09:49:29 GMT

Download: http://www.nero.com/eng/nero-aac-codec.html

Command to encode all *.wav files from a specific folder:

for /r "D:\WAV Files\" %F in (*.wav) do neroAacEnc.exe -q 0.4 -lc -if "%F" -of "%~dpnF.mp4"

The encoder will automatically choose which is the appropriate AAC profile to use based on the bit rate level chosen (or what bit rate the -q value you've chosen relates to), as follows (this may change over time):

AAC Profile	Full name of profile	Bit Rate Range kbps
LC-AAC	Low Complexity (normal AAC)	>= 85 kbps
HE-AAC	High Efficiency AAC	< 85 kbps
HE-AAC v2	High Efficiency AAC version 2	< 40 kbps

根據 MainConcept AAC-HE SDK 介紹網頁

HE AAC itself can not achieve transparency, so it is not a replacement for LC AAC but rather its extension and should be the audio codec of choice for internet, mobile, and broadcasting arenas.

所以看來要保存還是用LC-AAC好了

Eric Tsai: 電腦和網際網路

FON as bridge (讓FON跑橋接模式)

Nero AAC Codec - A Free MPEG-4 Audio Encoder