MEDIASTUDIO PRO USER GUIDE
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Apart from controlling how your system performs, you can also set up
Video Capture to optimize your captures using the Advanced tab of the
Capture Video dialog box (see page 92). Here you will find several options
dedicated to enhancing capture performance, such as allocating additional
memory buffers, specifying chunk granularity (data pack size), freeing up
RAM and synchronizing video to audio.
Techniques for improving your audio captures
When capturing audio there are three areas that you can control which
determine the size and quality of the audio file. They are the sampling rate,
sample size, and the number of channels. CD quality audio has a sampling
rate of 44 kHz, a 16-bit sample size, and two channels (or stereo). If you
intend to play back your video over low quality speakers, then capturing at
this level is not necessary. You may find a mono, 11 kHz 8-bit file more
practical. Also, if you are capturing background music, then it may not be
necessary to capture it at the same time you are capturing the video – you
can always add it later as an audio track in Video Editor. (For speech, this
is possible but it will require more effort later in Video Editor to synchro-
nize the audio with the video.)
Note:
For more about audio and its various properties, see the section on ‘Creating
a new edit window’ in Audio Editor, see page 308.
Capturing video
Once you have setup the video window to display your video the way you
like it, you are ready to capture. Before capturing, maximize your system
resources by closing all background programs and, if possible, defragment
your hard drive first for the best possible results.
Note:
The following procedure only shows how to capture video from an analog
source. See the tutorial section on how to capture DV, page 26. You can also find
details on capturing MPEG video in that tutorial, see page 28.
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