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SPEEDHQ AVI
Selecting AVI (.avi) encoding tells TriCaster to capture the designated source using
NewTek’s native AVI format, called SpeedHQ. This is a high quality, 4:2:2 file format
suitable for both SD and HD applications. (See the hint under Encoding above
regarding NewTek codec packs to use this option with your favorite applications.)
H.264
Another important encoding type is H.264. TriCaster supports two different bitrates,
designated High Quality and Web Quality. The former uses 8 Mbit/sec CBR encoding
and session format, while the latter option uses a *2 Mbit/sec bitrate.
* Note that, to maintain good image quality at low bitrates suitable for online use,
Web Quality recording is always standard definition format.
Note: H.264 encoding is processor intensive. To avoid dropped frames, this format should
only be used to encode one video stream at any time. Also, be aware that if an unexpected
condition (such as a power outage) should interrupt recording, incomplete H.264 files
cannot be repaired. For this reason, we recommend Quicktime or MPEG2 formats for
critical mission capture, with H.264 used only for redundant recordings.
SECONDARY RECORDINGS
NewTek’s IsoCorder™ technology provides additional capture capabilities to all ‘Pro’
models. Additional sources for capture can be individually added in the Secondary
Sources pane of the Record Configuration panel. A Switch next to the Secondary Sources
label toggles the operational state of all recordings configured below.
FIGURE 325
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