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632 bytes removed, 19:45, 11 April 2013
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== Open Questions ==
Seeking in Opus files requires a pre-roll (recommended to be at least 80 ms). However, currently Matroska requires its index entries to point directly to the data whose timestamp matches the corresponding seek point, not some place arbitrarily before that timestamp. These two requirements are incompatible, and mean that seeking in Opus will be broken in all existing Matroska software. In particularly unlucky cases (e.g., around a transient), playing back audio decoded without any pre-roll can produce extremely loud (possibly equipment-damaging) results. We need a new element to signal this, e.g. Track::TrackEntry::PreRoll.
Should we say muxers MAY or SHOULD NOT produce simple streams without filling in CodecPrivate?

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