User guide

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Chapter 15, Using Matrox MXO2 with Telestream Wirecast
Recording methods:
• Selecting an input and then starting a recording session If an input is
selected with a valid video signal when you start a recording session, a
recording is created for that input. If the selected input is invalid or
disconnected, the recording will start once a valid signal is connected to the
input. See “Input states and video formats” on page 225 for information on
how to determine the video format of an “invalid input.”
• Selecting an input during a recording session You can select an input at
any time during a recording session to begin recording that input. If you
clear and then re-select an input during the same recording session, a
separate file will be created for each selection sequence. The files are
differentiated by a recording number (see “Matrox ISO recording file
naming conventions” on page 222).
• Connecting an input source during a recording session You can connect
a valid input source to an unselected input during a recording session, and
then select the input to record your source feed.
To stop an input recording:
• Clear an input during a recording session Clearing a selected input
during a recording session stops the recording for that input. This is done
without affecting the recording of other selected inputs.
• Disconnect an input during a recording session If you disconnect a
selected input’s source, the recording will stop. You can later connect a
source with the same or a different format to start recording to a new file. If
you connect a source with a different video format, however, you must select
the source’s video format in the
Source Settings dialog box.
• Stop the recording session Click to stop the recording session. The
input recording will stop for your selected input.
WAV audio recording
When you record audio to separate .wav files along with your video, the .wav
files can have a maximum file size of 4 GB. This means that depending on your
specified audio settings, the .wav audio file has a maximum duration. This
restriction does not apply to the embedded audio in the video file, which can last
as long as the associated video. The following table lists the approximate
maximum duration for a separate .wav audio file based on the audio settings:
Audio Channel Type Audio Bit Depth
Approximate
Maximum Duration
Mono
16-bit 12 hours
24-bit 6 hours