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PERSENTECH e799bf87-95ba-4f21-beab-a3a2169a6c3b.xls: MPEG2TSand overhead Page 1
Software subject to change without notice. Salsys assumes no responsibility for
MPEG-DVB-IP Bit Rate Calculator the use of this software. Sample calculations provided as guideline.
DSM-CC Section Packing Advantage not incorporated into calculations.
Fields that can be
changed
MPEG 2 DVB Data Rate Calculation IP over Ethernet IP Encapsulator MPEG 2 TS DVB Modulator
Packets over ASI
Shaped Ethernet at IPe input IPe output Multiplexer or Modulator IPe Port
TS packets generated
MUX or MOD
total ethernet per ethernet packet MPEG 2 TS Expected % loss Time for port
Bits per second (kbps) packets per sec (pps) MPEG TS bitrate
packet size (bytes) (Without Section Output (kbps) at bit level buffer to fill (sec)
setting (kbps)
Packing)
460.0 64 898.4 1.0 1351.3 512.0 62.1 3.58
460.0 100 575.0 1.0 864.8 512.0 40.8 8.53
460.0 150 383.3 1.0 576.5 512.0 11.2 46.61
460.0 240 239.6 2.0 720.7 512.0 29.0 14.42
460.0 350 164.3 2.0 494.2 512.0 0.0 Never
460.0 500 115.0 3.0 518.9 512.0 1.3 437.21
460.0 550 104.5 3.0 471.7 512.0 0.0 Never
460.0 600 95.8 4.0 576.5 512.0 11.2 46.61
460.0 737 78.0 4.0 469.4 512.0 0.0 Never
460.0 900 63.9 5.0 480.4 512.0 0.0 Never
460.0 1048 54.9 6.0 495.1 512.0 0.0 Never
460.0 1200 47.9 7.0 504.5 512.0 0.0 Never
460.0 1518 37.9 9.0 512.7 512.0 0.1 4136.00
MPEG 2 DVB Data Packetization
Null packet Bytes
Number of TS Packets Overhead Bytes on the
within the % Data Over
Ethernet Packet Size Generated per Ethernet DSMCC Section incl.
Data Packet (bytes) %DSMCC OH DSMCC Section head without
(bytes) Packet (Actual fractional MPEG PID Header
without Section Section Packing
number) (Bytes)
Packing
64.0 46 0.28 21.0 11.2% 142.0 75.5%
150 132 0.79 21.0 11.2% 56.0 29.8%
350 332 1.90 25.0 6.6% 44.0 11.7%
500 482 2.71 29.0 5.1% 82.0 14.5%
550 532 2.98 29.0 5.1% 32.0 5.7%
600 582 3.26 33.0 4.4% 170.0 22.6%
1470 1452 7.98 49.0 3.3% 52.0 3.5%
1518 1500 8.24 53.0 3.1% 192.0 11.3%
Example of IP/Ethernet to MPEG DSM-CC Packetization
Transport Stream
188.0 Bytes RAW File
Packet
Header 4 Bytes the file may be segmented
into multiple AP PDUs 24 24 or 8
Payload 184.0 Bytes by the application bytes bytes
DSMCC Header 12 Bytes AP PDU
Checksum 4 Bytes TCP PDU or
UDP PDU
Offset Byte 1 Bytes each IP datagram may
be segmented over
Data Payload 167.0 Bytes multiple Ethernet frames IP Datagram
DSM CC Overhead
11.2% 64 Byte packets IP Datagram IP Datagram IP Datagram
64 Byte packets segment 1 segment 2 segment m
DSM CC Overhead Ethernet Ethernet Ethernet
3.1% 1518 Byte Packets Frame 1 Frame 2 Frame m
1518 Byte Packets each Ethernet frame
DSM CC Overhead may be segmented over
5.1% 512 Byte Packets as many as 9 Transport
512 Byte Packets Stream packets
12 bytes
4 bytes
4 bytes
4 bytes
4 bytes
IP Datagram IP Datagram IP Datagram
segment 2, segment 2, segment 2,
MUX/MOD PID Port section 1 section 2 section x
Buffer Size (TS Bytes DSM-CC DSM-CC
Packets) TS header section TS header TS header checksum
header
2000 376000
DVB Satellite Bandwidth Calculations Reed-
MPEG 2 TS Data Solomon Convolutional
DVB
Outer FEC Forward Error
Modulator
Codec Control (FEC)
Select one of the following: MPEG 2 TS Data Rate Calculation RS(204, 188)
Occupied BW:
Symbol Rate x
(1+alpha)
Alpha Factor: 20%
1/2 Rate: x 2
BPSK: ¸1
Specified as 2/3 Rate: x 3/2
QPSK: ¸2
(N,K): x N/K 3/4 Rate: x 4/3
QPSK 8PSK: ¸3
Modulation Format: 7/8 Rate: x 8/7
DVB Format DVB-S2
Enter MPEG 2 Transport Stream Data Rate in kbps: 512.0
Inner FEC Code R1/4 R1/3 R2/5 R1/2 R3/5 R2/3
Symbol Rate 1036 kSps 775 kSps 645 kSps 515 kSps 429 kSps 386 kSps
Occupied
1243.0 930.0 774.0 618.0 515.0 463.0
Bandwidth (kHz)
FEC- Inner Code R3/4 R4/5 R5/6 R8/9 R9/10
Symbol Rate 343 kSps 321 kSps 308 kSps 289 kSps 285 kSps
Occupied
412.0 385.0 370.0 347.0 342.0
Bandwidth (kHz)
Transponder BW MPEG 2 Transport Stream Data Rate Throughput QPSK
Inner FEC Code R1/4 R1/3 R2/5 R1/2 R3/5 R2/3
27 MHz 11.1 Mbps 14.9 Mbps 17.9 Mbps 22.4 Mbps 26.9 Mbps 26.9 Mbps
33 MHz 13.6 Mbps 18.2 Mbps 21.8 Mbps 27.3 Mbps 32.8 Mbps 36.5 Mbps
36 MHz 14.8 Mbps 19.8 Mbps 23.8 Mbps 29.8 Mbps 35.8 Mbps 39.8 Mbps
54 MHz 22.2 Mbps 29.7 Mbps 35.7 Mbps 44.7 Mbps 53.7 Mbps 59.8 Mbps
72 MHz 29.6 Mbps 39.6 Mbps 47.7 Mbps 59.6 Mbps 71.6 Mbps 79.7 Mbps
100 MHz 41.2 Mbps 55.1 Mbps 66.2 Mbps 82.8 Mbps 99.5 Mbps 110.7 Mbps
MPEG-DVB-IP Bit Rate Calculator FMF-v1.1 Updated: December 2006
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