Fix #766, Duplicate values of audio_element_ids in one MixPresentatio…

…n should be prohibited
AOMediaCodec · Nov 23, 2023 · 818494b · 818494b
1 parent cb5b4b2
commit 818494b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/index.bs b/index.bs
@@ -1176,7 +1176,7 @@ class MixPresentationOBU() {
 
 <dfn noexport>num_sub_mixes</dfn> specifies the number of sub-mixes. It SHALL NOT be set to 0. 
 
-<dfn noexport>num_audio_elements</dfn> specifies the number of [=Audio Element=]s that are used in this [=Mix Presentation=] to generate the final output audio signal for playback. It SHALL NOT be set to 0. 
+<dfn noexport>num_audio_elements</dfn> specifies the number of [=Audio Element=]s that are used in each sub-mix of this [=Mix Presentation=] to generate the final output audio signal for playback. It SHALL NOT be set to 0. There SHALL be no duplicate values of [=audio_element_obu/audio_element_id=] within one [=Mix Presentation=].
 
 <dfn noexport for="mix_presentation_obu">audio_element_id</dfn> indicates the identifier for an [=Audio Element=] which this [=Mix Presentation=] refers to.