I see nowhere to change the DC Precision either. You may have to create an Intermediate and use another encoder for this.
If you pick the PAL 1080i 422 50 mbit preset, it will automatically set the GOP length to 12. Only the NTSC 30 fps variants will default to 15.
Hi Will - but that doesn't give me:
- Closed GOP, every GOP
- GOP header on every sequence
- Sequence header on every GOP
Any further suggestions?
GOP headers, sequence headers & sequence extension headers are generated automatically, that's not something you need to toggle on. The only thing you can't control here is closed GOP on each GOP. That's not an available option.
Why is this a requirement, btw? Almost every MXF file I've ever analyzed is always closed GOP for the first (which it needs to be for the B0/B1 frames to be legit), and open GOP for the rest of the stream. The few exceptions I've ever seen: when 3rd party vendors screw up on the MXF wrapper, and the MXF index entries have closed GOP flags marked throughout the file, but in fact the underlying mpeg stream is actually open GOP throughout.
I'd check back with your client, I think this is an odd requirement. We have several broadcasters that we work with who have standardized on OP1a MXF delivery and have no issues with the files we're generating. You might try generating a test file & have them check it against whatever system they're using it with.
(Feel free to PM me back with additional questions if the client has more questions, I'm the MXF nerd in house.)