Live Video Cloud specifications – LTN help center

About: The following overview of system capabilities and technical specification relates to release v1.34.8 – July 2021.

Hint: Later updates might add, change, or remove specific aspects and capabilities regardless of whether they are listed here or not. Furthermore, your contract (MSA, individual service- or subscription order) might differ from this documentation.

Live ingest

Ingest an unlimited number of concurrent live signals from pro-cameras/encoders, mobiles, and online sources.

SRT: SRT Caller and SRT Listener, optional encryption (AES-128, AES-192, AES-265)
RTMP: push, pull, supporting H.264/AAC, via port 1935
HLS: pull using M3U8 manifest; automatically using highest possible quality
RTSP: pull; supporting RTSP 1.0 following RFC 2326
WebRTC: via capable mobile and desktop browsers via UDP out
IFB/Return Channel: to connected WebRTC clients via UDP
AAC-level 3.x to 4.0: higher levels are experimental
H.264 up to 1080p60
MP2 audio (decoding, passthrough, in-browser live preview), supported protocols: SRT, MPEG-TS over TCP
AC3 audio (decoding, passthrough, in-browser live preview), supported protocols: SRT, MPEG-TS over TCP
MP3 audio (decoding, passthrough, in-browser live preview), supported protocols: SRT, MPEG-TS over TCP
Fixed Buffer Option: enabling increased synchrony for inputs, 0.2 to 10s
PIR video (decoding, passthrough, in-browser live preview)
Variable Bitrate (VBR) Video and Constant Bitrate (CBR) Video
Signal Health Monitoring: based on runtime Mbit/s
Global ingest network: multi-geographical live source ingest for low-latency and reliable content delivery
High-res. signal bandwidth cap: bandwidth cap per incoming connection at 25 Mbit/s (for global ingest network) / 40 Mbit/s (for dedicated inputs)
No ingest signal limit: unlimited concurrent ingested live signals

Recording

Automatic recordings of ingested live signals.

Recording of live signals: automatic recording of all ingested signals
MPEG-TS container: assets as MPEG-TS (.ts) using ingest format
Filter recordings/assets: by user, date, and format
Access on-going recordings: recordings (growing files) are accessible for screening, transfer, and download from the first minute
Trim assets for transfer and download: cut based on video segments; actual in- and out-points may differ up to 10s from the selection
Asset download and transfer download: via HTTPS, transfer via FTP/SFTP
No recording limit: unlimited concurrent recordings, new asset every 6h

Curation and control

Visual and metadata-supported content curation for easy, and fast decision-making.

Continuous playback multi-view: with up to 48 live signals per page and unlimited pages, zoom levels for 1, 4, 12, 24, 36 and 48 signals, decoding limit for continuous playback: 12 x 720p60 per tile
Signal routing: connect live signals to unlimited outputs
Continuous output stream: via transcoded outputs, without reconnect on routing
Monitoring: Monitor stream health metrics and encoding parameters for all sources and targets individually in real-time.
Low-latency delivery: via passthrough, causes stream reconnect on routing
Thumbnail previews: updated in ~10s intervals Geo-Location explore content on map view
Filter live signals: by production, user, and input

Live distribution

Distribute live signals simultaneously to unlimited destinations online and to broadcast systems.

Multi-bitrate transcoding: up to 3 qualities per transcoded output, H.264, 0.1 to 20 Mbit/s, 240p, 240i, 360p, 360i, 480p, 480i, 720p, 720i, 1080p, 1080i with 25, 29.97, 30, 50, 59.94, 60 fps, AAC (stereo), 32 to 320 kbit/s (interlacing support for top-field-first)
Low-Latency passthrough using ingest format
Stream Mapping: select audio or video elementary streams via PID or enumeration (order in PMT); preserve, drop or remap streams for the whole output, override for individual destinations and resource locations; transcoded outputs can carry 1 video stream and up to 8 audio streams
Fixed Buffer Option: enabling increased synchrony between outputs, 0.2 to 10s
Metadata: Passthrough of VANC, CC, or SCTE-35 data for passthrough outputs (not supported while transcoding or performing format conversion like SRT to RTMP)
SRT: SRT Caller and SRT Listener, optional encryption (AES-128, AES-192, AES-265)
Pull Locations: RTMP, MPEG-TS, HLS: RMTP via port 1935, MPEG-TS via TCP port 7777, Apple HLS via HTTPS port 443, connection cap depending on required signal bandwidth
HLS Push: segment duration adjustable to multiple of GOP, adjustable number of segments in playlist, supporting up to 3 qualities, HLS authentication
RTMP push: up to 10 destinations, quality selection per destination for multi-bitrate outputs, incl. RTMPS
Static Overlay: configurable per transcoding quality, incl. image upload
HTML5 Overlay: configurable per output via source URL
No output limit: configure and use unlimited concurrent outputs
Output signal delay up to 300 seconds, configurable for each target individually

Setup configuration

Easy and flexible setup configuration including runtime changes with reliable signal connections.

Productions: configure setups based on your needs of inputs, continuous playback multi-views, and outputs
Inputs: configure public and private invites or protocol-based sources for allocation to productions
Outputs: configure transcoded and passthrough outputs for usage in productions
Runtime changes: add and remove inputs and outputs without interrupting the running production; add, remove, enable, and disable destinations without interrupting active connections to other targets
Lifespan: configure automated shutdowns for productions

Access and management

Use the system wherever you are and manage productions, users, and accounts.

User roles: divide your team into Manager, Editor, and Contributor
OAuth connections: for social manage accounts on Facebook, YouTube/Google, Twitch via OAuth connections without sharing credentials
Transfer targets: configure asset transfer destinations while keeping your credentials secure and avoiding complicated workflows
Access from anywhere: recommended: 10 Mbit/s (20 Mbit/s for 48 signals), via HTTPS, viewport of 1440 x 600 px or higher
Browser: Reference browser and guaranteed to be fully supported: recent version of Chrome (current version or up to 3 previous versions), other browsers like Firefox and Edge (in up-to-date versions) are known to work, but not guaranteed