Constraints for the substream MSDO information are present in the spec but missing in the software. Those constraints should be added to the AVM. _Note: This issue was migrated from GitLab. See original [issue](https://gitlab.com/AOMediaCodec/avm/issues/1426) for discussion history._ <!-- "GITLAB_ISSUE_1426" -->
Constraints for the substream MSDO information are present in the spec but missing in the software. Those constraints should be added to the AVM.
Note: This issue was migrated from GitLab. See original issue for discussion history.