whole operation should take 10 minutes or less
once you know what you’re doing.
After you compose your shot, you preview
and take the shot live just like any other input.
The only hiccup I encountered in testing was
that while each guest’s audio was correctly excluded from the master output, the host audio
was included in the master feed, which meant
that the host could hear himself in the main
output. You have two options to eliminate this.
First, when you configure the audio input, you
can select a checkbox that eliminates that feed
from the headphones. Or, click the Cog icon
next to your mic input to open the settings window, then drag the headphones audio knob on
the extreme lower left down to 0.
During the call, you can right-click any guest
input and choose Open Call Manager, which
contains the chat window, general connection
status, and detailed statistics regarding each
input and output in the call. Interestingly, vMix
was using VP8 video and Opus audio for all
We produced our three-person chat at 720p30.
On my HP zBook notebook, when recording to
720p at 4Mbps using the hardware-based Intel
H.264 codec, vMix CPU consumption averaged
around 16 to 20%. Dropping down to one guest
reduced CPU usage to around 15%. Most of the
video from all three sources was smooth, but
there were some frame drops with higher levels of motion. So long as your guests don’t pull a
Tom Cruise and jump up and down on a couch,
you should be OK.
One very cool feature is the ability to push any
vMix inputs, direct or remote, out via Network
Device Interface, which means that you can use
vMix Call to input callers into NDI-compatible
mixers such as the Tri-
Caster discussed below. If
your remote caller has vMix
installed, you can directly
connect via vMix, which
should enable 1080p calls,
Wirecast Rendezvous is
the conference feature added to Wirecast 8, which has
two versions: Studio ($695)
can support up to two guests
and Pro ($995) can support
up to seven. You can conference in from an
iOS device using the free Wirecast GO application, but Android workflows are not officially
Operationally, although Wirecast has a layer-based approach, this really doesn’t impact conferencing operation. As with vMix, you’ll input
each guest as a separate input, then combine
the host and guest into a single shot.
You start all conferences by creating a Rendezvous session from a layer (right-click > Rendezvous Session > Create Rendezvous Session),
which opens a window that provides a link you
send to all participants. Hosts are notified each
time an invited guest joins the conference, and
a simple click invites them in. Once connected,
you can either create a separate input for each
guest on any layer or add them to a shot as discussed below.
If a conference drops for some reason, guests
can instantly log back in using the same link.
However, all links expire after 2 hours of nonuse, so there’s no way to create a permanent
link you can use for recurring guests.
Figure 4 (on page 84) shows the Rendezvous
Dashboard you’ll use to control the remote
callers, with the host on top and guests on the
bottom. Click the gear beneath the host thumbnail to control the audio and video sources sent
to the guests. In the currently shipping version,
you’re limited to a specific camera input, and
you can’t send the composed output, though
Telestream says these features will be included in an upcoming release. Beneath each guest
are icons you can use to mute the audio, shut
off the video, and terminate the call.
Guests log in from Chrome or Firefox and
can choose their audio and video sources for