MPEG-TS output¶

Sapsan muxes any stream into SPTS MPEG-TS and serves it over HTTP — convenient for set-top boxes, transcoders, and legacy systems.

Playback URL¶

http://server/streaming/mpegts/<stream>

What is produced¶

• Correct PAT/PMT with continuous continuity counters; PIDs can be set explicitly, conflicting and reserved ones are reassigned automatically.
• H264/HEVC video, AAC/AC3/EAC3 audio, track language descriptors, teletext (teletext descriptor with pages and languages).
• JPEG screenshot tracks never enter the TS.

CBR¶

Sapsan can output a strictly constant bitrate — a requirement of professional receivers and modulators:

• the target rate is derived from track bitrates (with ~5% growth headroom and a PSI budget);
• sparse spots are filled with null packets (PID 0x1FFF);
• PCR is placed from a drift-free global clock — PCR-to-DTS divergence does not accumulate even on hours-long looped content;
• the decoder buffer model (HRD) is respected — overruns and underruns are tracked.

Sending over UDP¶

For sending MPEG-TS to multicast over UDP, see restreaming.

Next steps¶

• Ingest MPEG-TS
• Restream