Confused with 720/50p going to SD MPEG at DVinfo.net
DV Info Net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds
Register FAQ Today's Posts Buyer's Guides

Sony XDCAM EX Pro Handhelds
Sony PXW-Z280, Z190, X180 etc. (going back to EX3 & EX1) recording to SxS flash memory.

Reply
 
Thread Tools Search this Thread
Old February 19th, 2009, 03:05 PM   #1
Regular Crew
 
Join Date: May 2008
Location: Australia
Posts: 133
Confused with 720/50p going to SD MPEG

I’m really confused with this format 720/50p going to SD MPEG.
If I record in this format I get 50fps but when it’s converted to a SD MPEG through compressor I end up with 25fps. Is this correct that compressor throughs away every other frame to get 25p Pal.
I have searched everywhere and can’t find an answer.

I have done tests and the 50p going to Pal SD MPEG doesn’t look as smooth as the original 720/50p and I assume this is because I’m loosing frames.
Can someone shed some light on this for me?

Thanks
Nick
Nick Stone is offline   Reply With Quote
Old February 19th, 2009, 03:26 PM   #2
Regular Crew
 
Join Date: Mar 2008
Location: Middlesex, UK
Posts: 28
Shoot 720p50 if you are going to deliver 576i25. If your final output is 576p25 then my guess is any encoder would discard the second frame because all the information needed to make up 25 progressive frames is already there.
Omar Idris is offline   Reply With Quote
Old February 19th, 2009, 03:36 PM   #3
Regular Crew
 
Join Date: May 2008
Location: Australia
Posts: 133
The final product will be in Pal Progressive.
So the advantage to shooting in 50p is the fact that I can get better slow motion. Is this the only real advantage to shooting in 50p vrs 25p?
Nick Stone is offline   Reply With Quote
Old February 19th, 2009, 03:56 PM   #4
Inner Circle
 
Join Date: Feb 2006
Location: Belfast, UK
Posts: 6,143
Quote:
Originally Posted by Nick Stone View Post
The final product will be in Pal Progressive.
So the advantage to shooting in 50p is the fact that I can get better slow motion. Is this the only real advantage to shooting in 50p vrs 25p?
I'd assume what you wish to achieve is the extra progressive frame being used to create the second PAL field
Brian Drysdale is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds


 



All times are GMT -6. The time now is 02:39 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network