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Improve RDD 9 partition duration #12

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Improve RDD 9 partition duration #12

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Commits on Aug 25, 2023

  1. rdd9: ensure partition durations match spec table B.2 

    RDD 9 2013, section B.6 says that the partition durations in Table B.2
"should" be used.
    @philipnbbc
    philipnbbc committed Aug 25, 2023
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  2. rdd9: raise partition duration limit check to allow matching spec values 

    RDD 9 2013 (and 2009) specify an approximate 10 second partition
duration limit, not a hard maximum.

This commit will result in a partition duration matching the values in
section B.6 if a fixed GOP size of 12 or 15 frames is used. If a
different GOP structure is used then the partition may be larger (up to
15 frames) than the value in the spec (because a partition needs to
start with a key frame), but that's fine as the 10 second is not a hard
limit.
    @philipnbbc
    philipnbbc committed Aug 25, 2023
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  3. rdd9: set index segment byte counts equal if possible 

    RDD 9 2013, section B.6 states that the Index Byte Count of the last
Index Table Segment should equal the value of the other Index Table
Segments even when the Index Duration of the last Index Table Segment is
shorter.
    @philipnbbc
    philipnbbc committed Aug 25, 2023
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  4. rdd9: add --fixed-part option to force part interval 

    A new partition is started at the set partition frame count even if the
new partition doesn't begin with a GOP start.
    @philipnbbc
    philipnbbc committed Aug 25, 2023
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