VGADVI Recorder Pro User Guide
Configure encoding
6. If the selected codec is H.264 (default), click
Video encoding profile
to limit or include video formats
that are supported. Choose one of the following:
Value
Description
Baseline
Choose this option when streaming to an application that requires robustness
and cannot tolerate data loss, for example video-conferencing.
Main
Choose this option for standard-definition broadcasts. This is the default.
High
Choose this option when video is viewed for broadcast and disk storage
applications, particularly for high definition television application such as Blu-ray
disk storage format and HDTV broadcast service.
Video encoding profile and preset can be set only when the H.264 codec is selected.
7. If all your changes are complete, scroll to the bottom of the page and click
Apply
.
Configure frame size
By default, for channels with only one layout and when that layout has only one video source, your VGADVI
Recorder Pro automatically uses the incoming source frame size as the stream frame size. Frame size greatly
affects the amount of bandwidth needed to transmit your stream. The larger the frame size, the more
bandwidth you need to stream it. So you may want to keep the frame size the same as your source, or you
may want to apply upscaling, downscaling, stretching, or black bar framing, depending on your needs.
For example:
l
if the input signal resolution is 1920×1080 (a 16:9 aspect ratio)
l
and stream frame size is set to another 16:9 frame size such as 1280×720,
the smaller stream frame size causes the system to downscale the image and use less bandwidth to
transmit.
Or if you have a widescreen/HD format source but need a 4:3 output frame size, you can add black bars to
the top and bottom of the frame.
The system is designed to provide scaling, however for the best overall system performance
(particualrly when reaching maximum system capacity), configure your source to provide the
correct frame size and avoid scaling.
To configure your stream's frame size:
137