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London Video Tech - 2023-05-09
Don't talk SRT about
my WHIP
Dan Jenkins
Everycast Labs
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Dan Jenkins
WebRTC & Real Time
Media Geek
@dan_jenkins
Founder - Everycast Labs
Organiser - CommCon
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Broadcast Bridge - simplifying bringing in
remote collaborators into Professional AV
Work
fl
ows
@everycastlabs
broadcastbridge.app
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TONIGHT
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At London
Technology
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The Biggest
Contest of the
Year
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The Winner...
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Will Win BIG
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AND
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Will be the
Undisputed*...
*Not so much undisputed...
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UDP Media*
Transport
*Lies...
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Introducing...
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SRT vs WHIP
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SRT
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SRT
Secure Reliable Transmission
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WHIP
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WHIP
WebRTC HTTP Ingest Protocol
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What is
SRT ?
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Secure
Reliable
Transmission
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srt://foo.bar:9710
Add url params for encryption, identi
fi
ers, latency
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Open Source
Transport
Developed by Haivision, currently released under the Mozilla Public License
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It is an expired
IETF Draft
Which isn't necessarily a bad thing
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Uses UDP
Not TCP
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Push or Pull
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Supports encryption
but isn't mandatory
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Defaults to
~120ms latency
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Controlled
latency
Which can o
ff
er more time to recover from losses
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Typically used
for Media
But doesn't have to be
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Usually transports
MPEG-TS
And all of its subsequent parts it supports.
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But in theory
could be used to
transport anything
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Widely
Supported
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FFmpeg
GStreamer
VLC
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Vmix
OBS
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Platforms Support It
Ingress and Egress
Broadcast Bridge being one of them
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The SRT
Alliance
https://www.srtalliance.org/members/
Now Over 600 Members
https://www.haivision.com/about/press-releases/srt-alliance-surpasses-600-members/
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Cloudflare
Wowza
Dolby
Sony
Microsoft
Alibaba Cloud
Tencent Cloud
AJA
Ateme
Bitmovin
Paramount
Matrox
Red 5 Pro
Eurovision/EBU
Over 600 Members
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YouTube recently
joined the SRT
Alliance
https://www.haivision.com/about/press-releases/youtube-joins-srt-alliance/
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Their Interop
Plugfest is 9-11 May!
https://www.srtalliance.org/srt-plugfest-guide-what-you-need-to-know/
https://www.haivision.com/resources/webinars/srt-plugfest
(i.e. right now)
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What is
WHIP?
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WebRTC
HTTP
Ingest
Protocol
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https://foo.bar/whip/endpoint
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WebRTC
Signalling Protocol
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Designed to simplify
WebRTC Ingress
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It is an IETF
Draft
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Is TCP
Not UDP
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Has a partner
protocol
called WHEP
WebRTC HTTP Egress Protocol
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It is Starting to
Gain Traction With
Implementers &
Providers
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Twitch
Dolby
OBS
GStreamer
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Ultimately is just
SDP over HTTP
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No Media
what-so-ever
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That's
WebRTCs Job
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So What is
WebRTC?
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A Collection of
Protocols
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Can transport
Data & Media
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Offering the
lowest latency
But it's not easily con
fi
gurable (called playout delay)
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The Goal is
always Real Time
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Media travels as
encrypted RTP
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It is a Peer to
Peer protocol
But a server can be a peer!
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Being P2P means
handling NAT
scenarios using ICE
But that's less important when one peer is a server
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Session setup
using SDP strings
Yes... voodoo
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Mandatory
encryption
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Multiple
Codec
Choices
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Works on every
device with a
web browser
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But can work
elsewhere too!
(Osprey Talon Encoders for example)
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Designed to get
Media from A to B
with as low latency
as possible
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So
WHIP vs SRT
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No content
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Technically...
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It's not really a
competition
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The Real
Competition is...
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WebRTC vs SRT
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WebRTC is coming
from behind.
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But WHIP enables
open adoption
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WebRTC has
never had that.
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And that is so
exciting.
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YouTube supports
WebRTC ingress
(From a browser with a webcam - maybe WHIP soon?)
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For me...
there isn't a
competition
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There's just
more choice.
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The right tool for
the right job.
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Which tool is
right is down to
your
circumstances.
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Choose wisely.
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Both have Pros
and Cons.
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Ultimately...
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You can't be sad
that you now have
more options
when streaming
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You can't be sad
that you now have
more options for
receiving a remote
stream
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What do they both
have in common?
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Changes QUIC
may bring
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Exciting times in
media delivery
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Much Love.
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Not war.
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Thanks!
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CommCon - commcon.xyz
Residential Conference
19-23 June (Conf days 20-22)
Open Media Conference
Blackburn UK
Two Tracks, 35+ sessions
Fantastic Networking Opportunities
Use Discount
Code LVT for
£300 o
f
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Thanks!
We're hiring
https://jobs.everycastlabs.uk
@dan_jenkins
@everycastlabs