User`s manual

LOLA: Low Latency Audio Visual Streaming System
LOLA initial default audio setup is for 2 stereo channels, collecting audio input from the
first two channels of the RME audio card; e.g. setting the “AudioInputOffset” to 0. LOLA will also
remember these settings until you change them again.
If your activation code includes LOLA audio multichannel services, you will also have the
possibility to select the “N. of Audio Channels” from this menu, If you have audio multichannel
enabled, and want to use more than 2 channels, or you want to collect audio not from the first two
channels of the RME audio card, see section 4.1 for further setup details.
TX Audio Level let you choose between “1” (no audio pre-amplification) or “2” (6dB audio
pre-amplification). The default value “1” should be OK with most devices and setup, but in case
you need to boost the level, you can use “2” instead.
In the “Video” section, select the camera file appropriate for your device. You can also
configure a Toshiba or Hitachi color camera to run in b/w by selecting the appropriate ..._bw.anlg
files. Since version 1.2.1 LOLA supports all Frame Rates between 20fps up to 60fps. Of course the
more fps the more bandwidth you will use. Standard values of 30fps or 60fps are commonly used.
If your PC has more than one NIC (network Interface Card), you can also select which one
LOLA will use in the “Network Adapter” field.
Multiple NICs Note: Due to an internal software design, if you have more than one NIC
adapter, you have to physically disconnect the unused network cable and leave only the one
connected to the selected NIC.
Since version 1.3.0, LOLA can also compress video data. By default compression is
disabled (“NONE” selected from the “compression” menu); compression should be used only
when there is not enough bandwidth available to run LOLA with uncompressed video data (see
section 2.5), as compression introduces further latency (up to 4ms) and requires further processing
power. (See section 4.1 for further details).
3.4.2 Changing the user identification and activation codes
If you need to change your user identification/activation code, just select the LOLA “Help”
menu, and then “Update Serial”; upon confirmation your current codes will be removed. Quit the
LOLA application and restart it in order to enter the new codes.
3.5. Tuning the LOLA Workstation
It is recommended to switch off other applications that might interfere with the audio/video
streaming process when the application is used in production sessions: anti-virus scanning software
or similar should be carefully disabled. In case you notice some PC performance problems, it is
suggested to disable the various “energy saving” options. The fine tuning of the Operating System
for audio video streaming applications might also be advisable, although it is not strictly necessary,
specially on Windows 7 or later . Please note that Windows 7 firewall disables by default ICMP and
thus LOLA capability to perform its initial "check" function with the remote partner; you can fix
this by enabling ICMP responses in the Windows 7 firewall configuration. Also remember to turn
off the screen saver.