From 7fd09deb89ac22f9178f6ec3ea12f5ecd696d6c6 Mon Sep 17 00:00:00 2001 From: Cristian Recoseanu Date: Tue, 17 Oct 2023 14:43:57 +0100 Subject: [PATCH] Update README.md To include section describing substreams --- capabilities/README.md | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/capabilities/README.md b/capabilities/README.md index 73588de..7d296b3 100644 --- a/capabilities/README.md +++ b/capabilities/README.md @@ -251,6 +251,19 @@ It MAY be used in place of the file with the same name in the AMWA BCP-004-01 sp - **Target:** (a) Sender `st2110_21_sender_type` (defined in the [Sender Attributes](../sender-attributes/#st-2110-21-sender-type) register), (b) SDP attribute `a=fmtp:` format-specific parameter `TP` - **Applicability:** AMWA IS-04 +## Substream Constraints + +MUX Senders create IS-04 flow objects for each subflow included in the MUX flow. +The MUX flow links to each subflow object using the `parents` construct described in [AMWA IS-04](https://specs.amwa.tv/is-04/) + +### Substreams +- **Name:** `urn:x-nmos:substreams` +- **Description:** Identifies any per substream constraints. +- **Specification:** per AMWA BCP-004-01 + - **Type:** object (as per [AMWA BCP-004-01](https://specs.amwa.tv/bcp-004-01/)) + - **Target:** MUX Sender subflows and their associated attributes sub-targeted by individual Substream Parameter Constraints +- **Applicability:** AMWA IS-04 + [RFC-4566]: https://tools.ietf.org/html/rfc4566 "SDP: Session Description Protocol" [RFC-9134]: https://tools.ietf.org/html/rfc9134 "RTP Payload Format for ISO/IEC 21122 (JPEG XS)" [color-sampling]: https://www.iana.org/assignments/media-type-sub-parameters/media-type-sub-parameters.xhtml#media-type-sub-parameters-15 "Media Type Sub-Parameter Registry for video/raw: Color (sub-)sampling"