Y’know, I looked at your post and the “Zero” replies and I thought, who’s gonna jump in first or WILL somebody get to answering you before I raised my pennant?
OK, I’ll approach in attempting to answer in this fashion: Here’s what Vegas can do and then what I do. Perhaps that’s a way forward, and then for others wishing to reply . .
Ahem . . . . .
Vegas’s talent has been to be able to deal with MOST flavours of format: Audio and Video and many combinations of formats in-between. It’s been its Party trick for many years. This has meant it has had to have a flexible response to our whims; outputs formats and the various capturing devices out there . . Time Moves on . . . . Things have gotten a little weird and strained out there, and the multitude of Formats (AVCHD and don’t get me started on MP4 and non-globally recognised formats!) have made Vegas the likely U.N. of the NLE World. Apart from being encompassing to the many formats, it can ALSO allow us to adjust at the 3 places you’ve identified as being options for setups. So, on the One Hand we have an NLE that says “Yes” to Formats and again “Yes” as to how we want to then go ahead and work with those formats and then “Yes” to the Output<>Render we want.
I really understand why you’ve asked the question . . . I really do . . .
Now, my workflow is to say:”Hmmmm, what is the majority of my work being delivered in – FOR THIS PROJECT?” If it was SD 720×576 PAL then that’s exactly who I would set up my Project. Easy. If like now I’m shooting with my Canon XF300 – 1440×1080 50i PAL, then again I now set my Project to match my Canon Output. I’ve kept and keep my options tight to the content I use. This means Vegas isn’t forever4 trying to manipulate my MXF files to display at SD. The project matches the the Content – this is good for Previewing and Editing.
Now IF I have any other footage that needs to be converted to a MAIN Project Vegas CAN do that too. So, conversion is also a place that would mean I would fiddle with the settings. This COULD happen at Event level or where ever.
I hope this has gone some way in answering your question; has allowed others to dip in and placed front and centre just why we have these option in Vegas.
I’ll leave the truly VooDoo replies of Why Upper to Lower and the various resolution formats and WHERE one should apply these factors to others. But I did, hopefully, get your ball rolling.
Party tricks are great! However, we also need some understanding to recognise it is a trick and not some trick/confusion of the light! – And then it just becomes too vague and disappointing.
Cheers
Grazie