Rich, Precisely, yes. But even with byte encoding of bitstreams you have an endian problem. At some point the capture system imposes its personality on the process and you simply have document what you've done so the upstream ('viewer'/'accessor') toolset can take it into account in post processing. The adding of metadata context is what contributes to the deterministic outcome, rather than attempting to force raw capture into a rigid format. Thanks for the reference. I must have come across it before at some point as it seems very familiar. But it wasn't a work I was referencing yet in preparation. I'm studying it closely, along with things like the UPF. What strikes me is how there are several originating documents around effort followed by long silences and lack of back references. It may be down to the relatively cursory nature of my work so far, but it seems adoption of these formats and processes has been either quiet or limited. Is that a misapprehension on my part? Any other efforts you think I should investigate? -- Colin