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:


Input specific 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




  • 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. For Output, an address of the local interface or 0 to accept connection from any interface
  • 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;


  • path — path to the file

Additional options for Input:

  • loop — start playing from the beginning after the end of file



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
astra_5/inputs.txt · Last modified: 2018/10/24 10:37 by radiosintetica