cvmmap-streamer/docs/compat_matrix.md

Compatibility Matrix

Mandatory Acceptance Matrix

The deterministic acceptance matrix is driven by tester binaries, not by a dummy pipeline source.

Run it with:

cmake -B build -S .
cmake --build build
./scripts/acceptance_standalone.sh

Covered rows:

Row	Protocol	Codec	Transport	Runner
1	RTP	H.264	UDP RTP	./scripts/acceptance_standalone.sh
2	RTP	H.265	UDP RTP	./scripts/acceptance_standalone.sh
3	RTMP	H.264	libavformat	./scripts/acceptance_standalone.sh
4	RTMP	H.265	libavformat	./scripts/acceptance_standalone.sh
5	RTMP	H.264	ffmpeg_process	./scripts/acceptance_standalone.sh
6	RTMP	H.265	ffmpeg_process	./scripts/acceptance_standalone.sh

Notes:

• RTMP is Enhanced RTMP only.
• The custom RTMP packetizer and domestic mode are removed.
• encoder.backend remains auto|ffmpeg; both resolve to FFmpeg.

Optional Checks (Non-Blocking)

These are useful interoperability checks, but they are not part of the mandatory acceptance gate:

• ./scripts/rtmp_srs_smoke.sh
• ./scripts/live_srs_forward_smoke.sh '<cvmmap-uri>'
• manual WHEP playback through SRS
• manual ZLMediaKit interoperability checks
• live MCAP capture, validation, and paced replay

Recording Coverage

MCAP support is validated separately with:

• ./build/mcap_reader_tester
• ./build/mcap_replay_tester
• ./scripts/replay_mcap.sh

Current recording scope:

Output	Codec	Notes
MCAP foxglove.CompressedVideo	H.264	Stored as Annex B access units
MCAP foxglove.CompressedVideo	H.265	Stored as Annex B access units

Current Defaults

Setting	Value
Encoder backend	auto -> FFmpeg
RTMP transport	libavformat
RTMP mode	Enhanced only
Encoder device	auto
Low-latency GOP	30
B-frames	0

What Is No Longer Supported

• GStreamer encoder backend
• custom RTMP packetizer
• RTMP domestic mode
• dummy input flags in the main runtime
• direct in-repo RTSP/WebRTC publishing