It’s also important to consider that not all CDNs are capable of
dynamically transcoding a stream in this manner. However, the
good news is that you can still offer your viewers a choice of stream
quality through the use of “multi-encoding.” Multi-encoding lets
you publish the same program at different levels of encoding quality
to ensure maximum accessibility for your audience. While watching
your video stream, viewers have the option to manually select the
most appropriate quality stream for their net work, as required.
Multi-encoding can also help maximize the results of your
multi-streaming efforts. In some multi-streaming situations,
your selected CDNs may have technical requirements that differ
from one another (such as resolution and bitrate). Hardware
encoders like Pearl- 2 use multi-encoding to essentially re-encode
your program at different settings and tailor your broadcast for
each destination CDN or video platform.
For example, you might use multi-encoding and multi-
streaming with a versatile live production switcher to:
• record at a high bitrate/frame size and stream at settings
suitable for your bandwidth
• stream a switched program to multiple CDNs
• stream to a single CDN at multiple bitrates/frame size
• create a lower-quality external stream and high quality
• include your switched live program as part of another layout
• and much more.
Whatever the specifics of your unique live streaming scenario,
the use of multi-streaming and multi-encoding helps add
valuable live streaming flexibility. Stream to audiences across
multiple platforms, enable live stream accessibility for viewers
across all levels of bandwidth, and use the resulting increase in
viewership to cultivate your brand.
MULTI-STREAMING IN ACTION
Let’s say you’d like to send a 1080p live stream to three different
platforms: You Tube, Facebook Live, and a third CDN such as
Wowza Streaming Cloud™. YouTube and Wowza Streaming
Cloud accept broadcasts in 1080p, but Facebook Live recommends
encoding a stream in 720p at a bitrate of 4 Mbps.
Streaming your program to You Tube and Wowza Streaming
Cloud is particularly easy because both platforms accept streams
encoded with the exact same settings. With Pearl- 2, you simply
configure two broadcast publish destinations using the You Tube
and Wowza RTMP streaming endpoints and user streaming keys.
When your stream is ready to go live, you’re able to push your
broadcast to both platforms concurrently.
Publishing your program for Facebook Live at a smaller
resolution is a simple process that requires the use of multi-encoding. Pearl- 2 accepts a variety of video sources, including
SDI (up to 12G), HDMI, 4K HDMI, DVI, USB and, notably, RTSP
sources over a network (such as IP cameras). Here’s the neat
part: your 1080p program (streaming to YouTube and Wowza
Streaming Cloud) actually generates its own RTSP stream.
Using this RTSP input feature, you can use your 1080p program
as the source for a second channel. The contents of the second
channel mirror the output of the original 1080p channel. From
here, you simply configure the encoding settings for this new
program to fit the Facebook Live specifications: 720p resolution
and 4 Mbps bitrate.
Set this new 720p program to broadcast to Facebook Live, and
when you’re ready to broadcast, simply publish both programs.
You’re now streaming your live production to all three locations
simultaneously—You Tube, Facebook Live, and Wowza Streaming
Cloud (Figure 3).
THE BEGINNING OF SOMETHING GREAT
The use of multi-streaming offers significant advantages
compared to single-CDN streaming, allowing you to multiply your
viewership and increase the growth of your own unique brand.
When it comes to mastering live streaming, versatility is key.
Professional-quality live production switchers like Pearl- 2 help
take your live productions to the next level with advanced feature
sets—such as multi-streaming—that let you adapt to every live
streaming scenario and increase engagement by reaching a
wider audience on more platforms.
ABOUT EPIPHAN VIDEO
Epiphan Video produces world-class, award-winning audio visual
solutions to capture, scale, mix, encode, stream, record and play
high resolution video including 4K UHD. Our customers include
companies that specialize in live event production, education,
healthcare, worship, manufacturing, usability, collaboration,
security and transportation.
Epiphan’s field-proven product line includes live video production
and video streaming systems, external USB-based video grabbers
for capturing video and graphics from DVI, HDMI™, SDI and VGA
sources and internal video capture cards. Our products are designed
in North America and backed by rock-solid technical support.
Epiphan Video is a trade name of Epiphan Systems Inc., a privately
owned company incorporated in 2003. Epiphan is based in Palo
Alto, California, USA and Ottawa, Ontario, Canada with regional
offices and a network of authorized channel partners and OEMs
throughout the world.
Using Pearl- 2 with multi-streaming and multi-encoding