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Output failover strategies

LTN Global
Updated
The output failover functionality for transcoded outputs is available upon request. Contact support or your contact person at LTN Global.

About: The failover for outputs increases the reliability on the distribution side by preventing disconnects to destinations. It can switch automatically to alternative content if the routed signal is unavailable. 

Identify the failover

If a failover is active the output is in an attention state, and an icon is shown, which represents one of the failover types:

icon-no-signal.png

No Signal

 icon-silence.png Black & Silence icon-bars-tone.png Bars & Tone icon-custom-source.png Custom Source

In that case, the inputs and productions view show a visual indicator of the active failover strategy for a given output.

out-preview-failover.png

No Signal

"No Signal" is used as a system default configuration for passthrough outputs. In the case of failover, no video or audio will be sent. Takers can not pull content, and destinations will receive no signal.

 

dg-output-failover-no-signal.png

  1. Failover strategy: Select "No Signal".
  2. Preview: Displays how the state will be communicated in the interface.
  3. Info: Short explanation and attention message.
Hint: HLS and RTMP connections may break in case of failover.

Black & Silence

"Black & Silence" is used as a system default configuration for transcoded outputs. In the case of failover, black video and muted audio will be sent. Takers can pull the signal and destinations will receive it.

 

dg-output-failover-silence.png

  1. Failover strategy: Select "Black & Silence".
  2. Preview: Displays the output preview.
  3. Info: Short explanation.

Bars & Tone

"Bars & Tone" is a system-generated test pattern. In case of a failover, it will send the test pattern automatically. Takers can pull the signal, and destinations will receive it.

 

dg-output-failover-bars.png

  1. Failover strategy: Select "Bars & Tone".
  2. Preview: Displays the output preview.
  3. Info: Short explanation.

Custom Source

"Custom Source" can be a video or image file, which will be looped and used as alternative content to the routed input signal. The file must fulfill the following specifications:

 

Transcoded outputs

  • Resolution must match the resolution of the highest enabled quality of the output
  • File size must not exceed 500 MB
  • Supported file formats: mp4 (H264, AAC), png, and jpg

File handling

  • Videos will be looped
  • Image files will be sent as a video with silence
Hint: The provided URL must be accessible for Live Video Cloud over the public internet when the output is started or when a running output's failover configuration is updated.

Live Video Cloud downloads the file when the output is started. In case of a problem, while fetching the content, the system displays an error message and reflects the status in the output inspector. Custom sources can be added or changed while the output runs but not while a custom source is active.

In case of failover and the custom source being unavailable, the system default will be used as a fallback until the custom source is ready.

 

dg-output-failover-custom.png

    1. Failover strategy: Select "Custom source".
    2. Preview: Displays the custom source including video player controls.
    3. URL: Enter a public URL to your video or image file.
    4. Info: File specification.
Hint: The custom source is only previewed in the output's detail view. Live Video Cloud displays a visual indicator for the selected type everywhere else.

 

Custom source status

states-custom-source.png

  1. Unknown: Status is shown when the output is offline. The custom source still needs to be fetched.
  2. Download: Status is shown when the output is starting or online. Live Video Cloud currently downloads the custom source.
  3. Success: Status is shown when the output is online. The custom source is downloaded and ready.
  4. Error: Status is shown when the output is online. Live Video Cloud was unable to download the custom source, or the custom source does not match the supported file specifications.

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