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VMC-7440_v8_0_6_Quick Start_V1_0_0.doc
If you encounter this kind of behaviour on a system, please try to update the BIOS of the
motherboard, move the card to a different slot or move the card to a different
motherboard.
7.8.13. Why the beginning of the recoding is corrupted after switching a
profile?
This is a known issue when switching from composite to SDI input preset. This issue is
related to the transition from interlaced to progressive formats. First frames of the file
show a damaged portion of the last captured frames. A possible workaround is to start a
first encoding of 100 ms with a non existing filename in order to reset internal video
buffer after a switch of profile. This encoding will be transparent for the user since no file
will be created in this case.
7.8.14. What does represent the white dots in the video preview when I
start encoding?
These white dots represent frame size and are generated by the Overlay Monitor
component. It is possible to disable this option by turning off “Rate Display On”
parameter of Overlay monitor section from the Livewire Settings Page.
7.8.15. What does represent the two green bars on the right side of video
preview?
The two greens bars represent audio levels in dBFS captured from the audio source.
Top of the audio level means 0 dBFS and bottom of the audio level is -98 dBFS. This
information is given by Status Monitor component and can be retrieved through an audio
event.
It is possible to disable this option by turning off “Audio Meter On” parameter of Overlay
monitor component using Livewire Settings Page.
7.8.16. What can I do when there are some visible default on my video
preview
Direct3D mode is the best mode for the display since it adds some functionality to
improve the video quality and avoid tearing effect. Please try to switch the mode of the
video preview into D3D.
7.8.17. Can I get events, warnings and errors from the product?
Livewire sample application does not display warning, error or event.
However, it is possible to receive all kind of event, notification, warning or error in a
custom application by subscribing the application to Eventlog notification (see source of
the livewire sample application).
Implementing Eventlog notification is very useful in case of troubleshooting. If your
application does not subscribe to the Eventlog, you can ask for LogsFlowServer.exe tool
that can trace all events from Livewire.
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