Adding NDI Streams

the ndi is pulled into zixi broadcaster using the auto discovery mechanism described in the ndi stream discovery docid 31tngprpjggux3a8vedec section to add an ndi input stream before adding the ndi input stream, you must configure the relevant transcoding profiles see configuring transcoding profiles for ndi sources docid\ ftz4qpcedsimtathb d1c ndi inputs can be resized but not padded with black bars enabling the “keep aspect ratio” checkbox in the transcoding profile will cause the transcoder to fail in the zixi broadcaster navigation menu, click the inputs tab in the menu bar, click new input the add a new input stream window is displayed select ndi for the input stream enter the maximum concurrent connections to this stream from the max outputs drop down list default unlimited select the show in matrix check box to display this stream in the matrix (see using the matrix https //zixidocumentation atlassian net/wiki/spaces/117/pages/4887944270/using+the+matrix ) default selected specify the stream parameters (see adding ndi streams /#input stream parameters table ) if you want to specify billing codes to identify and differentiate traffic on a zixi broadcaster for billing purposes, select this checkbox (see input stream parameter table below) if you want to enable time shift, select this checkbox (see input streams parameters table) if you want to enable multicast on pull outputs , select this checkbox (see input stream parameters table) if you want to enable encryption select this checkbox (see input stream parameters table) for more information, see encrypting an input stream in zixi broadcaster docid\ tnzx9emc3xvncnapl5m6n click ok the “input added” message appears on the top of the screen the ndi stream is added to the zixi broadcaster and now appears in the list of streams available in zixi broadcaster inputs screen input stream parameters table parameter description stream parameters stream select one of the ndi streams available based on your configuration from the drop down menu on a local area network ndi will use the discovery mechanism to advertise the sources and zixi broadcaster will automatically discover these streams to make the streams discoverable in the cloud, you need to deploy an ndi discovery server and configure the ndi plug in with the settings mentioned above video profile select an existing transcoding video profile, or select remove stream if you want to remove the video track audio profile select an existing transcoding audio profile, or select remove stream if you want to remove the audio track timing audio reference level \[db] this parameter attenuates the audio level by the specified level in db this setting is used to prevent audio clipping 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 the bitrate value must be compatible with the selected profile add rtp headers select this checkbox to add rtp headers to the stream rtp adds a 12 byte header, which includes a sequence number and a timestamp that can be used to detect dropped packets the sequence number in the rtp headers can be used to do automatic reordering and the timestamps can help overcome inter packet gaps, also known as iat (inter arrival time) however, plain rtp does not feature error recovery or error protection by default, the rtp headers (which include the timestamps and sequences) are being used on the input side, but then they are stripped off and they no longer propagate to outputs smoothing buffer 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 enable time shift select this checkbox to record the stream content and broadcast it after a specified delay to deploy an input stream that uses the current stream's time shift, you need to configure a "delayed" input stream (see adding delayed streams docid\ djs kqg9ttvktsh8kbtbo ) maximum delay \[hh\ mm\ ss] specify the time of the delayed transmission of this stream maximum 24 hours enable multicast on pull outputs select this checkbox to enable 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 multicast only selecting this checkbox will force the transmission of this stream only in multicast enable encryption select this checkbox to encrypt the input stream for more information, see encrypting an input stream in zixi broadcaster docid\ tnzx9emc3xvncnapl5m6n encryption type (for encryption enabled) specify the type of encryption (aes 128/192/256) encryption key (for encryption enabled) click generate to generate an encryption key the generated encryption key must be sent to the end user to decipher the received encoded stream recording parameters select this checkbox to customize the recording parameters destination type select the radio button for the desired storage type and then fill in the relevant parameters record to disk – the recording is saved on the local disk it is possible to record to an external destination by replacing the default storage location with a symbolic link to learn more, see using an external storage docid\ kwqtjzkqyfdjofcp f2e2 section record to s3 – the file is saved to your aws s3 bucket the mechanism uses aws multipart upload amazon advises to define a lifetime rule for objects on destination bucket record to disk parameters file name template specify the file name pattern that zixi will use to generate when saving the recorded content a separate file will be generated for each recording up to the time specified in the max recorded file duration parameter (see above) after this duration a new file will be generated the file name pattern can include any string and up to five variables listed below only the %t=hh mm ss creation time is mandatory you can change the order of these variables and add text as long as you maintain the legitimate structure of the file in linux and windows %s=stream id optional %y=year optional %m=month optional %d=day optional %t=hh mm ss creation time mandatory %u=yyyymmddthhmmssz utc timestamp optional for example, the following pattern %y recording%t ts will generate the following file name 2017 recording15 32 35 ts 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 custom path optionally specify a storage location for the recorded files that is relative to the root folder this location bypasses the location specified as the root folder in the settings > general screen record to s3 parameters file name template specify the file name pattern that zixi will use to generate when saving the recorded content a separate file will be generated for each recording up to the time specified in the max recorded file duration parameter (see above) after this duration a new file will be generated the file name pattern can include any string and up to five variables listed below only the %t=hh mm ss creation time is mandatory you can change the order of these variables and add text as long as you maintain the legitimate structure of the file in linux and windows %s=stream id optional %y=year optional %m=month optional %d=day optional %t=hh mm ss creation time mandatory %u=yyyymmddthhmmssz utc timestamp optional for example, the following pattern %y recording%t ts will generate the following file name 2017 recording15 32 35 ts max recorded file duration \[hours] specify the maximum time allotted for recording a video stream default 2 hours url specify the url of the s3 bucket ignore tls certificate errors tls certificate for s3 bucket might be detected as faulty if bucket name contains dot\[s] when this option is selected, zixi broadcaster will ignore the tls certificate errors and transmit the stream to its destination access key the access key that is used for accessing the s3 bucket secret key the secret key that is used for accessing the s3 bucket