Minor spec fixes

draft-avtransport-spec.bs

@@ -333,7 +333,7 @@ interval <code>[-1.0, 1.0]</code>.
 Padding may be present in some packets (<dfn noexport>padding</dfn>). Unless otherwise indicated,
 the data in padding must be ''0x0''.
 
-Note: this document is machine-parseable. Each symbol of a packet or enum has an assigned ID of
+Note: This document is machine-parseable. Each symbol of a packet or enum has an assigned ID of
 the form ''descriptor in hex''+''index'', where index is a number starting from 0,
 incremented for each element in a structure.
 
@@ -1017,6 +1017,9 @@ in the following manner:
 
     : <dfn noexport>STREAM_BINAURAL</dfn> = <i>0x10000</i>
       :: Stream contains binaural audio. If set, pre-processing for headphones should be disabled.
+
+    : <dfn noexport>STREAM_MULTILAYER</dfn> = <i>0x20000</i>
+      :: Stream contains multiple layers in the codec bitstream. For example, alternative views.
 </div>
 
 Several streams can be <b>chained</b> with the {{STREAM_LOW_QUALITY}} bit set to indicate

libavtransport/include/avtransport/avtransport.h

@@ -56,7 +56,7 @@ typedef struct AVTContextOptions {
     uint16_t producer_ver[3]; /* Major, minor, micro version */
 
     /* Padding to allow for future options. Must always be set to 0. */
-    uint8_t padding[4096 - 16*1 - 3*2 - 0*4 - 2*8];
+    uint8_t padding[1024 - 16*1 - 3*2 - 0*4 - 2*8];
 } AVTContextOptions;
 
 /* Allocate an AVTransport context with the given context options. */