User guide

Matrox Maevex 5100 Series – User Guide 23
Using pass through or confidence preview
For your encoder, PowerStream has two local output options:
 Pass through – When using pass through, your encoder outputs the video and audio
signals of your source directly to your monitor and audio output device. While this is
enabled, the local output settings of your encoder are disabled.
Because the signal is direct from the source to the output devices:
 The source uses the EDID of the DVI or HDMI digital monitor connected to the
HDMI OUT connector of your encoder to determine which display mode to use. If
no EDID is detected, the source may disable its video output and capture is
impossible.
 The encoder must support the display mode used by the source for capture,
encoding, streaming, or recording to work.
 The output settings (such as Size and transformations and Image appearance ) for
your encoder have no effect and are disabled.
 If capture isn't working on your encoder, the source video still plays on your
monitor.
 No analog video signal is received, so there’s no video output on the VGA connector
(analog video output).
 If the HDMI output device connected to your encoder doesn't support audio
output, your HDMI source may disable its audio output. Because no audio is
received at input, there's no audio for the encoder and all decoders connected to this
encoder.
 Confidence preview – When using confidence preview, your encoder uses the
PowerStream video and audio local output and capture settings for your encoder to
output to your video and audio output devices.
While this is enabled:
 No monitor needs to be connected to your encoder. The source uses the EDID of the
encoder to determine which display mode to use. The preferred display mode of the
encoder is 1920×1080 @ 60Hz.
 The output settings (such as Size and transformation and Image appearance ) are
used to output the video to the monitors.
 The transformations are done directly to the display mode received from the source,
which may be different from the display mode of the encoded stream. For more
information, see Encoding.
 Your encoder can output to a DVI or HDMI digital monitor connected to the HDMI
Out connector, to an analog monitor connected to the VGA connector, or to both.