Comments

Spot|DSE wrote on 9/28/2003, 11:10 AM
Vegas auto-sniffs the framerate at capture. You need to set the project properties in VEGAS correctly to play back the captured media, and that is done in the FILE>PROPERTIES dialog, where you'll find a preset already built for this. There is also an excellent white paper on this subject http://mediasoftware.sonypictures.com/support/productinfo/24p.pdf
HTH
km_odyssey wrote on 9/28/2003, 1:11 PM
http://mediasoftware.sonypictures.com/support/productinfo/24p.pdf

Great breakdown of Vegas and 24p & 24p advanced use.

Thanks
filmy wrote on 1/21/2004, 11:41 PM
ok, here is something that just came to light for me and I did not find any sort of info on this, but this thread was very close.

The film I am editing - they just shot pickup shots last week and they shot using the Pani VX100. I got the material and I started to capture some of it and I am dropping frames left and right. This never happens so before I freak out I fast forward to another take and try to capture that - it captures fine. I just thought "Well it must be the time code is screwy there" or something. I drop one of the new inserts onto my 30p project timeline and it plays back at about 5fps. I am thinking "What the hell..." and low and behold - it says it is 24p material. So I go into the settings and uncheck the "Allow pulldown removal when opening 24p DV".

So let me jump around a bit - I ask them if they shot at 24p and they say, they insist, they shot standard 30p so my deduction was they hit 24p for that shot. So today I go in to capture some more, from the same tape, and I am dropping frames left and right - all the time. So I look around the capture settings to see if there is some 24p capture setting I am missing. Nothing. So here is the "weird" part - for the hell of it I go into the main Vegas settings and re-check the "Allow pulldown removal when opening 24p DV" option. Go back to capture - not one dropped frame...and all the material is all flagged at 24p. As a test I went back and unchecked the option - dropped frames during capture. Checked - perfect capture.

Now - I have been capturing material all day, but all of it was 30p material...this seems to be the only tape shot at 24p...at least that is what Vegas is saying. The DP and producer, who is also a DP, insist that is not the case - the 24p shooting. So my question is twofold - 1> Are you, anyone, aware of vegas 4.0d capture issues that are affected with the use of the "Allow pulldown removal when opening 24p DV" timeline option? and 2> Does the DVX100 put down 24p flags on everything it shoots even if it isn't shot at 24p? (By the way the material reads at 30i when the "Allow pulldown removal when opening 24p DV" option is off, with it on it reads as 24p)

A sub question is how does vegas capture 24p material? Does it do pulldown removal on the fly while it is being captured? And if so why would that be affected by the timeline option of "Allow pulldown removal when opening 24p DV"?
farss wrote on 1/22/2004, 12:31 AM
filmy,
there is a Vegas users forum on www.DVXuser.com.
SonyEPM wrote on 1/22/2004, 7:28 AM
"1>Are you, anyone, aware of vegas 4.0d capture issues that are affected with the use of the "Allow pulldown removal when opening 24p DV" timeline option? "

Vegas and the video capture app are independent .exe's, and as such absolutely NO pref setting in Vegas will impact video capture performance. Can't happen in the case you describe or any other.

"2> Does the DVX100 put down 24p flags on everything it shoots even if it isn't shot at 24p? (By the way the material reads at 30i when the "Allow pulldown removal when opening 24p DV" option is off, with it on it reads as 24p)"

The flags are stuffed by the camera depending on the 24p mode you are shooting with. A different flag is used for 24p and 24p advanced (2 separate flags). Neither of the 24p flag variants will be added to footage shot in non-24p mode.

"A sub question is how does vegas capture 24p material? Does it do pulldown removal on the fly while it is being captured?"

We capture 24p DV just like any other DV- there is no capture time convert to 24p. Pulldown removal is done at playback time in Vegas (hence the pref- if unchecked, pulldown will not be removed).

Questions for you: What deck or camera are you using to capture the DVX100-acquired footage? We have seen one JVC deck that improperly stripped off the 24p flags.

Also: Do you still have those demo DV codecs on your machine?
filmy wrote on 1/22/2004, 9:53 AM
Thanks for the response -

I did not think that the pulldown setting would affect capture that is why I found it so strange that it did...and it *really* does. As I said, for whatever reason, on - no dropped frames, off - dropped frames. Very weird. Deck wise I use the JVC SR-VS30U, which I know you said in another thread, stripped off the headers on output, but this is input. There are not any issues with any material captured for any tape dopped frames wise except this one, thus far anyway. I can put in a tape shot with the EZ30 and it brings in the material at 30p. I can put in another tape shot at the standard 30i and it brings it in fine. I put in the tape shot, supposedly, at 30p with the DVX100 and it drops frames UNLESS, for whatever reason, I have the pulldown option on. And the material reads as 24p (with 2-3 pull down), which by all acounts means it was shot at 24p. From what you are saying if they really shot it at 30p there would no sign of 24p flags in the data, but there must be because Vegas is reading them. Very strange.

By the demo codec you mean the Main Concept DVCpro codec I take it - no, it is off the system. (Did you try to repro the crash I was getting with it by the way?)