Possibly a retarded question, but...

newUzer wrote on 6/14/2008, 3:10 PM
Hello,

I'm wondering what happens under the following conditions: Let's say I drop a DV clip onto my timeline, and my project is set up as a NTSC DV. I also have the deinterlace method set to interpolate. Now, I render to MPEG2 using the DVD Architect NTSC video stream template, author a DVD using Architect, and then view it on my PC.

Now whether I see interlacing artifacts during playback all depends on how well my software player does deinterlacing. Rather than depending on the player, I'm wondering what would happen if one customizes the DVD Architect NTSC video stream template so field order is set to progressive only. Would DVD Architect still accept the stream? Would the authored DVD still play on a TV? On a PC?

Comments

TGS wrote on 6/14/2008, 3:58 PM
Make your mpegs and ac3s from the Vegas rendering list, not DVD Arch.
Use DVD Arch to make those into a DVD
You can customize like crazy from Vegas, but not DVD-A
farss wrote on 6/14/2008, 4:34 PM
This isn't a retarded question at all.
Unfortunately using Vegas so far I've had no success creating a mpeg-2 stream with the P flag set correctly. Of course if your footage is really interlaced then forcing the flag gets you into even more problems as the playout device will assume it's PsF and do a simple weave/merge on the fields with probably horrid results.

Reason this is an issue with Vegas is I can shoot and capture 25p (its' written to tape as PsF) with the V1E. Vegas correctly sees the captured footage as P and merges the fields. I cannot produce a rendered file and write that back to tape that has the same flag set as what the V1P writes to tape. It's perhaps only a minor annoyance as the problem can be addressed when the footage is captured back from the tape by forcing Vegas to see it as P. However the concern is that not everything has the option to force the handling of PsF after capture.

Now I haven't tested this in V8, maybe it's another one of those things that got addressed but isn't in the release notes.

Bob.
kairosmatt wrote on 6/14/2008, 5:53 PM
What is PsF?
Thanks
kairosmatt
farss wrote on 6/14/2008, 6:41 PM
Progressive Segmented Frame.
In other words a single frame captured as just a frame is split into fields. This is done because many systems cannot cope with full frames. Despite the huge amount of BS about this in some circles it is true progressive as the two fields can be merged back into a single frame with not a pixel different if the frame had been written as a single frame.
Adding pulldown to go from 24p to 60i is a bit more complicated. Depending on how the pulldown is added you may not be able to get back the exact original frames.

Bob.

Edited because I got this wrong originally and I can't find a good technical reference to it anywhere.
Second Edit: Helps to find the right search terms, damn Google and TLAs.
http://en.wikipedia.org/wiki/Progressive_segmented_Frame

kairosmatt wrote on 6/15/2008, 3:59 AM
Thanks Bob!
CClub wrote on 6/15/2008, 6:50 AM
Okay, perhaps this can be written off as excessive political correctness, but the term "retarded question" is highly offensive to many families I know. I work as a social worker with individuals with special needs and also have a son with autism/developmental disabilities. The term "Mental Retardation" is going by the wayside along with the past terms "morons and idiots," so it doesn't phase me much, and I view it simply as a legal term these days for probate court issues I deal with and for funding purposes. But for many families, it's highly sensitive and would be right up there with saying "I have an AIDS question" or "I have a N****** question." Okay, I'm off my social soapbox and back to editing.
Laurence wrote on 6/15/2008, 7:35 AM
The word "retarded" literally just means "slowed". It is a term that is designed to be a nice way of describing a learning disability. Over time, the stigma gets added to the "nice" word, and a new label is needed: hence the phrase "special needs".

Just watch, in a couple of year, "special needs" will be considered impolite and a new phrase will take it's place.

Just my "special needs" opinion.

Grazie wrote on 6/15/2008, 11:14 AM
When I first read this, I thought: "Hmmm.. if I had a child/relative/friend who had 'Learning Difficulties' would I use that particular word if I was wanting to express how badly I was understanding Vegas?" I came back with the answer, a resounding "No!" - Sometimes life just aint that difficult.

Love you all,

Grazie