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Clause 6.2.3 of IAMF[1] states both of these shall be set to 0.
[1]https://aomediacodec.github.io/iamf/v1.0.0-errata.html#iasampleentry-section
Signed-off-by: James Almer <jamrial@gmail.com>
(cherry picked from commit 180c869faf)