LiveU LU60 - Page 58

LiveU Live Video Uplink System User Guide
58
SD (Standard Definition)
The following resolutions are available for an SD video source on LU60/LU70
devices.
• CIF: NTSC 360x240 | PAL 360x288: This is normally used for Internet
output applications, as well as TV under certain conditions. The optimal
encoding bitrate for CIF is between 350 and 750 Kbps (or up to 1.5 Mbps
total transmission rate under harsh conditions). However, it is possible to
start working with CIF from 250 Kbps and upwards, if necessary. This
resolution is available in either NTSC or PAL.
• ½ D1: NTSC 720x240 | PAL 720x288: This provides close to Full-D1
quality. Use this resolution when high quality is needed and the uplink
bitrate is limited. The lowest bitrate that should be considered in this case
is approximately 512 Kbps. The optimal bitrate for Half-D1 is between
750 Kbps and 1.5 Mbps.
• VGA: NTSC Only | PAL 640x480: This provides near Full-D1 quality,
which is used by some websites. Use this resolution when a higher quality
is needed and enough bitrate is available. The lowest bitrate that should be
considered in this case is about 750 Kbps. The optimal bitrate for VGA is
between 1 Mbps and 2 Mbps.
• D1: NTSC 720x480 | PAL 720x576: This is the highest SD resolution
currently supported by the LU live video uplink, and is normally used for
SD live TV broadcasts when the highest quality picture is required. Only
consider transmitting Full-D1 when the overall available bitrate is over
1 Mbps. The optimal video bitrate for Full-D1 transmission is between 1.5
and 2 Mbps.
Saving the Profile
To apply the Profile definitions that you have selected, tap the Save button.
To close this window and return to the main window, tap the
button.