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Parameter

Description

Video Profile

Select an existing profile or select Keep original stream if you do not wish to transcode the video stream.

Audio Profile

Select an existing profile or select Keep original stream if you do not wish to transcode the audio stream.

Apply audio profile for all audio PIDsSelect this option if you want to re-encode all audio tracks using the same audio profile, instead of just the first audio track that is detected.
Output Type

Select one of the following output types. The outputs are configured as part of the transcoding process, so there is no need to create the Output from the Zixi Broadcaster Outputs screen:

  • MPEG-TS – the output will be available as MPEG Transport Stream.
  • NDI – the output will be available as NDI. When selecting NDI output, you can select the following video/audio profiles:
    • Video profile – remove stream or a Raw profile.
    • Audio profile - remove stream or a Raw profile.
  • WebRTC – the output will be available as WebRTC. When selecting NDI output, you can select the following video/audio profiles:
    • Video profile – remove stream, keep original stream, Raw video profile, or if the input stream is not WebRTC compliant, a transcode to WebRTC compliant profile (e.g. H.264 codec with Baseline or Main profile and no B frames).
Audio profile - remove stream, keep original stream, Raw audio profile, or if the input stream is non-Opus, transcode to Opus.

Transport Stream Bitrate (Kbps)

Specify the bitrate of the transport stream. This parameter is optional. If you do not specify a TS Bitrate, the stream will be VBR. If you specify a bitrate, the stream will be CBR.

Use Intel hardware acceleration (if available)

Select this checkbox to use hardware acceleration component if it has been installed.

Add RTP headers

Select this option to add RTP header to the MPEG-TS packets' Iframe .

Pass all PIDs

Select this checkbox to pass-through all non-transcoded PIDs.

Force I-Frames on SCTE-35 markers -

Selecting this option will do the following:

  • If a SCTE-35 SCTE35 marker was is detected and it contains a specific video timestamp (PTS), the encoder will generate an IDR-frame on the video frame with the closest or equal timestamp.
  • If there is no timestamp in the SCTE-35 SCTE35 marker, the transcoder will generate the an IDR frame as soon as it can.

Pass all PIDs

Select this checkbox to pass-through all non-transcoded PIDs.

Force I-Frames on SCTE-35 markersCopy Closed CaptionsCopy Closed CaptionsIf the video source contains closed caption, select this option to copy the CC to the encoded video streams, otherwise it will be dropped. This option is relevant for HEVC and h264 sources and targets.
Smoothing buffer [ms]The Smoothing feature uses a buffer to time packets according to the stream's clock. This is useful when there are bursts in the rate in which the stream arrives. The smoothing features creates a queue in the buffer, allowing smoother entry into the Broadcaster. The Smoothing parameter defines the size of the buffer in Milliseconds. A larger the buffer enables smoother entry. However, it may influence the latency rate.
GPU

The GPU utilization threshold. If this limit is exceeded, the GPU indicator at the top of the screen will appear in red, and an alarm will be generated in the event log.

Default: 0
Crop ParametersSelect this checkbox to set the cropping parameters.
Cropping Mode

Set the units used for defining the crop. Options are: Pixels or Percentages.

Note: Depending on the type of content, in some cases using different crop values for low resolution outputs might be appropriate.  For example, if the content includes both video content and textual content, the text would not be readable at lower resolutions and thus might be better to exclude.  Another use case for using different crop values for each output would be to slice a 360 or VR input video.
Left, TopSpecify the left and top positions for the crop.
Width x HeightSpecify the width and height values for the crop.
Billing CodesBilling codes are used to identify and differentiate traffic on a Zixi Broadcaster for billing purposes. When a billing code is added to a Source or Target, Zixi can track the traffic on that Broadcaster input or output separately from other inputs and outputs on the same Broadcaster. Billing codes are created by Zixi personnel on the Zixi Customer Portal for a particular organization.
Billing CodeEnter the billing code that corresponds to this stream. The relevant billing can be obtained from the organization that received the billing code from Zixi.
Billing passwordEnter the password that corresponds to this billing code.

Enable time shift

Select to enable delayed transmission.

Maximum delay [hh:mm:ss]

Specify the time of the delayed transmission of this stream. Maximum: 24 hours.

Transmit as multicast

Selecting this checkbox enables the transmission of this stream’s outputs as multicast. A Zixi receiver that will pull the stream will receive it in multicast. By default Zixi Broadcaster is configured to allow transparent fallback to unicast if it is out of the LAN. Requires enabling Multicast Pull in the Settings. This setting requires enabling Multicast Pool (Settings > Multicast Pool).

Enable multicast output on pull outputsSelecting this checkbox will force the transmission of this stream only in multicast.

Recording Parameters


Max recorded file duration [hours]

Specify the maximum time allotted for recording a video stream. Default: 2 hours

Keep recorded files for [hours]

Specify the maximum time for storing the recording. Default: 0 hours

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