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single program transport stream (SPTS) [EtherGuide Glossary]
Transport streams can contain one or more than one program service.
A transport stream that offers just one program service is called a single program transport stream. If a transport stream offers more than one program service, it is a multiple program transport stream.
Program streams only offer a single program service. The table below gives the packet assigment details of a transport stream with a single program service. Pursuant to ATSC standards, a single program transport stream can have a maximum of one video stream, and essentially an unlimited number of audio streams.
typical ATSC SPTS program elements
| packet id | description | typical bps |
| 0 / 0x0000 | Program Association table (PAT) | 15,000 |
| 48 / 0x0030 | Program Map table (PMT) | 4,000 |
| 49 / 0x0031 | MPEG-2 Video, captions | 4,500,000 |
| 52 / 0x0034 | AC-3 Audio | 400,000 |
| 6000 / 0x1770 | EIT-0 | 10,000 |
| 6001 / 0x1771 | EIT-1 | 5,000 |
| 6002 / 0x1772 | EIT-2 | 2,500 |
| 6003 / 0x1773 | EIT-3 | 1,250 |
| 8187 / 0x1FFB | PSIP_base_pid | 15,040 |
| 8191 / 0x1FFF | null packets | 150,400 |
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Glossary
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