I have successfuly mixed field orders in VS9 a number of times.
I have captured some holiday footage from my camcorder, via firewire in Lower field First.
I have then put a short clip from a Hollywood movie in amongst my video as it was of the location I had visited. This footage came via my TV card and was Upper field First.
After carying out a few experiments I found the best results were to select the correct field order of whatever came first. Doing so I did not detect any of the strobing effects associated with an incorrect field order.
I have done this on a number of occaisions. I don't know the technical reasons other than it worked.
How to determine field order
Moderator: Ken Berry
-
DiscCoasterPro
- Posts: 250
- Joined: Mon Aug 29, 2005 10:42 pm
Hi guys. DCP here ... AKA ... Left Field. Ok, its been said here that capturing analog video should be done upper field first. Now, no matter who or how analog video is captured, it has to go through a capture device PRIOR to it being imported into VS. Do some of these capture devices actually send an analog signal out of the device unconverted to VS, and VS converts it to digital? Perhaps this is one area I am confused about. If not, then isn't EVERYTHING that VS sees coming in a digital signal?
In my case, with this Canopus 300. It goes into the device as analog, then comes out via firewire ( and preset with no adjustments) as DV/AVI. Now everything that comes out of this thing is digital, as is everything that comes out of EVERY converter, I thought. <sigh>, So, if what is going into VS is a digital signal of DV/AVI, (same as a camcorder) shouldn't this be LFF ? Since also stated in the thread was digital video should be captured LFF. Other converters may send a signal to VS as mpeg, but isn't mpeg also a digital signal rather than analog? And, if it is digital then isnt' this also LFF ?
I guess I need to have the term "captured" clarified. Are we speaking of captured by the capture device (whatever it may be) or by captured do we mean by finally importing it into VS.
If the former .... then of course the device is responsible for setting filed order, which makes most sense to me, since the later again is all digital.
If what I am assuming is even close to accurate, then the statement would be better phrased, " Most all analog video signals are captured by their respective devices as UFF, and therefore VS should be set that way when receiving the import." ... to go on, "If however, your particular capture device is outputting the analog signal as a LFF mpeg or avi, then VS should be set as LFF to receive it." Now if that was accurate, I might even understand it. LOL
Now, if a device is capturing analog in upper field and sending it to VS, then this is where I can envision a problem if we switch field orders. If however a similar device is capturing the same footage LFF then in that case even though it was originally analog, we need VS to see it LFF.
The main reason I'm thinking of it this way is because of a link a while back that said something like "and a TV doesn't look at any particular field order first"
OH well I keep trying. Wait till I come out with my backwards tutorial manual. Its going to be compiled from my reading the VS9 manual, and stopping each time I either don't understand what they are saying or feel as though something was omitted as I read through it. Then I enter a tutorial edit in the form of a question for my manual. The problem so far with completion is the projected manual size is 4 zillion pages!
In my case, with this Canopus 300. It goes into the device as analog, then comes out via firewire ( and preset with no adjustments) as DV/AVI. Now everything that comes out of this thing is digital, as is everything that comes out of EVERY converter, I thought. <sigh>, So, if what is going into VS is a digital signal of DV/AVI, (same as a camcorder) shouldn't this be LFF ? Since also stated in the thread was digital video should be captured LFF. Other converters may send a signal to VS as mpeg, but isn't mpeg also a digital signal rather than analog? And, if it is digital then isnt' this also LFF ?
I guess I need to have the term "captured" clarified. Are we speaking of captured by the capture device (whatever it may be) or by captured do we mean by finally importing it into VS.
If the former .... then of course the device is responsible for setting filed order, which makes most sense to me, since the later again is all digital.
If what I am assuming is even close to accurate, then the statement would be better phrased, " Most all analog video signals are captured by their respective devices as UFF, and therefore VS should be set that way when receiving the import." ... to go on, "If however, your particular capture device is outputting the analog signal as a LFF mpeg or avi, then VS should be set as LFF to receive it." Now if that was accurate, I might even understand it. LOL
Now, if a device is capturing analog in upper field and sending it to VS, then this is where I can envision a problem if we switch field orders. If however a similar device is capturing the same footage LFF then in that case even though it was originally analog, we need VS to see it LFF.
The main reason I'm thinking of it this way is because of a link a while back that said something like "and a TV doesn't look at any particular field order first"
OH well I keep trying. Wait till I come out with my backwards tutorial manual. Its going to be compiled from my reading the VS9 manual, and stopping each time I either don't understand what they are saying or feel as though something was omitted as I read through it. Then I enter a tutorial edit in the form of a question for my manual. The problem so far with completion is the projected manual size is 4 zillion pages!
I would say that's right....If what I am assuming is even close to accurate, then the statement would be better phrased, " Most all analog video signals are captured by their respective devices as UFF, and therefore VS should be set that way when receiving the import." ... to go on, "If however, your particular capture device is outputting the analog signal as a LFF mpeg or avi, then VS should be set as LFF to receive it." Now if that was accurate, I might even understand it. LOL
Right again, VS, DVD players and TVs don't care what the field order is, they will play them as they come. But your eyes and brain will complain if the action is not coherent in time.The main reason I'm thinking of it this way is because of a link a while back that said something like "and a TV doesn't look at any particular field order first"
It's so easy: find any movie sequence about 10 seconds where left/right panning occurs (car chase?).
Use both upper and then lower first and capture twice.
Remember the file names (f.i. call them lower and upper)
Make the whole sequence respecting the field order for both, you now have two files on a DVD (the two movies using either upper or lower)
Play the DVD on TV, one movie is OK, the other is ugly.
The smooth action is from the movie with right fields sequence. Note down on your Canopus cable: upper (or lower) first. Finished.
Just like when swimming: if you're lost, blow a bubble, the direction it goes is up... No need for large theories here.