Input Address Format

    Media address has three parts:



    Describes which type of the source should be used. Available next types:

    udp — UDP multicast, unicast, or broadcast rtp — based on the UDP http — HTTP based protocols. MPEG-TS, HLS (HTTP Live Streaming) rtsp — Real Time Streaming Protocol to receive streams from IP cameras dvb — DVB Adapters. Receive streams from DVB-S/S2, DVB-T/T2, DVB-C, ISDB-T, and ASI devices file — MPEG-TS Files


    Source specific address


    Options could be source specific and general. Options should divided by the & symbol. For example: dvb://a001#pnr=100&cam

    Input specific options



    udp://[interface@]address[:port][#options] rtp://[interface@]address[:port][#options]

    • interface — IPv4 address or name of the local interface. By the default uses system route table
    • address — IPv4 address of the stream. Multicast or Unicast
    • port — port number. Default value: 1234 Additional options for Input:

    renew=INTERVAL — renew the multicast subscription after the defined time Examples:

    udp:// udp://eth0@ udp:// udp://



    • login:password — login and password for rtsp authentication, basic or digest
    • address — server IPv4 address or domain
    • port — port number. Default value: 554
    • path — path to the resource. Default value: /




    • login:password — login and password for http authentication
    • address — server IPv4 address or domain.
    • port — port number. Default value: 80
    • path — path to the resource. Default value: /

    Additional options:

    • ua=USER-AGENT — custom value for User-Agent header. Default value: Astra
    • timeout=TIMEOUT — timeout, in seconds, for establishing a connection with a server. Default value: 10
    • buffer_size=SIZE — the receiving buffer size, in kilobytes. Default value: 1024
    • buffer_time=TIME — Buffer size in seconds - alternative buffer_size

    To receive HTTPS source need to use additional proxy, nginx for example, because Astra doesn't support HTTPS yet. Create configuration file /etc/nginx/sites-enabled/astra with content:

    server {
        listen 30000;
        server_name _;
        location / {
            proxy_cache off;
            expires -1;
            proxy_ssl_server_name on;

    MPEG-TS File



    • path — path to the file Additional options for Input:

    loop — start playing from the beginning after the end of file Examples:


    General options

    • pnr=PNR — program number, also known as SID (Service ID). Extract a program with defined number from the stream
    • set_pnr=PNR — set custom PNR
    • set_tsid=TSID — set custom TSID (Transport Stream ID)
    • biss=1122330044556600 — BISS key to descramble a program
    • cam — use DVB-CI to descramble a program
    • cam=CAM-ID — specify the Softcam connection to descramble a program
    • ecm_pid=PID — select the ECM PID (not recommend to use)
    • shift=X — the decryption buffer for incoming stream, in megabits, allow to make a delay before decrypt a stream. This option may be needed for the "Sky" channels. To calculate a shift value need to multiply bitrate of the stream and delay in seconds. For example 10Mbit stream * 3 seconds will be shift=30
    • cas — transmit data for Conditional Access System. Use this option to transmit encoded stream
    • **filter=N,… **— stream filter, remove data with defined identifiers (PID). Identifiers should be comma separated
    • filter~=N,… — stream filter, remove all data except defined identifiers (PID) and the service data. Identifiers should be comma separated
    • map.SRC=DST — change data identifiers (PID) to the custom value. SRC - is an original identifier or type of the data. Possible types is pmt, video, audio or language descriptor. DST - is a custom PID. Value should be in range from 16 to 8190
    • no_sdt — remove service description: service name, provider name. SDT - Service Description Table
    • pass_sdt — pass SDT without processing. By the default, if pnr is defined Astra transmits information about current stream only
    • no_eit — remove event information: EPG. EIT - Event Information Table
    • no_analyze — do not analyze this input for possible errors and changes in the data table
    • pass_eit — pass EIT without processing. By the default, if pnr is defined Astra transmits information about current stream only
    • no_reload — turn off a checking of the changes in the stream
    • cc_limit=N — set the CC-Errors limit. If the number of the CC-Errors will be more than limit then Astra will try to switch to next source. By the default limit is not set. CC (Continuity Counter) is a serial number of the data packets. CC-Error - violation of the packets sequence due to the loss of data
    • bitrate_limit=RATE — set a minimal bitrate for analyzer in Kbit/s. Mark source as corrupted if the stream rate less than the bitrate limit value. Default values: 16 Kbit/s for stream without video data and 128 Kbit/s for stream with video data
    • watchdog=XXX - setting the watchdog time to restart the faulty input, set in seconds. the default is 5 seconds.