How to make bmxtranswrap repeat index in footer partition

[protoism]

I'm trying to create an RDD-9 compatible MXF file with ffmpeg + bmxtranswrap

The validator (baton) is complaining because it does not see an entire index in footer partition

There is this --repeat-index option, but it's only for op1a output, at least this is what I see from command line help.

So... in a command line such as this one, --repeat-index is ignored (tried to add it in a couple places...)

bmxtranswrap -y 09:59:45:00 --repeat-index -o complete_bmxtranswrap_repeat.mxf --repeat-index -t rdd9 complete.mxf

But looking at the code, I found that the option --ard-zdf-hdf does the trick:

bmxtranswrap -y 09:59:45:00 --repeat-index -o complete_bmxtranswrap_ard_zdf_hdf.mxf --ard-zdf-hdf --repeat-index -t rdd9 complete.mxf

So...

• why is --repeat-index ignored, if the functionality is there, and index repetition is (I believe) a good practice in RDD-9?
• What does --ard-zdf-hdf do more than repeating index in footer? Is there any chance that it will reduce compatibility with other broadcasters?

[philipnbbc]

I've enabled the --repeat-index option for RDD 9 in https://github.com/bbc/bmx/pull/96 and merged it. I might at some point make it the default as I think I agree that it would help readers to have the index available in the footer, but for now you can use the option.

The --ard-zdf-hdf option should be safe to use in non-German broadcasters as well. It adds the following to the base RDD 9:

• repeat the index in the footer
• reserves 2MB space (rather than 8KB) in the header (for potential header metadata updates)
• checks there are either 8 or 16 audio tracks
• Sets the Preface::IsRIPPresent property in the header metadata
• Sets the IndexTable::SingleIndexLocation, IndexTable::SingleEssenceLocation and IndexTable::ForwardIndexTable properties to false