Interlacing in Windows Media Player 9

24Peter wrote on 6/2/2003, 5:51 PM
I'm shooting, editing. and rendering 24p (DVX 100 & Vegas). When I preview my footage in Vegas, I notice it previews in "progressive" mode (little "p" in the lower left corner of the preview window next to the timecode) and looks great. However, when I play the file back in Windows Media Player 9 - either on my computer LCD screen or TV-out to my television - I get all this interlace artifacting whenever there is movement in the image. I've tried some of the different "performance" settings in WMP9 but none seem to help. Eventually, I'll be outputting to tape/DVD but like to preview my work on the computer or TV. Any ideas?

Comments

spike_spiegel wrote on 6/3/2003, 9:37 AM
Hey, Pete!

I *really* need to connect with a few experienced producers who are using the DVX-100 & V4 combo (as I am). Could you PLEEZE drop me an email at:

denarista@earthlink.net

so we can trade a few notes?

Thanks!

Eric
aka Spike
RBartlett wrote on 6/3/2003, 10:11 AM
24Peter,
What version of your 24p are you playing with WMP ? A DV 24p 2:3 (or 2:3:3:2) AVI or an MPEG-2 file of 24p flagging 2:3? I'm not positive over your workflow after your first post.
If you select the file in Vegas, does it say interlaced in the description in the Vegas4 explorer panel?

If it is DV, can you see if you are using the M$ codec?
Does it play differently (Win2k) if you drop it into mplayer2.exe ? - do you get better settings control for D1 frame sizes of your 24p? Artifacting from interlace shouldn't be present if you select 360x240|360x288 size, or it might be something else.

Ideas for you to reply on anyway....
SonyDennis wrote on 6/3/2003, 1:56 PM
24Peter:

When you render to 24p DV, Vegas adds pulldown to the material to produce 60i NTSC DV. This is what causes the interlaced artifacts that you see.

If you want full progressive frames in NTSC DV, you'll need to use 30p mode on the DVX100 and create a 30p template in Vegas (start from normal DV and change the field order to "Note (progressive)". Or, continue using 24p, but render to 24p WMV or MPEG-2 or some other format that can handle 24p natively without adding pulldown.

Please check out our 24p whitepaper here.

Also, your "TV out" function might not have correct field timing, so I wouldn't use that as a guide when editing. When your final rendered project shown on a TV from a real DV device, you shouldn't see interlace artifacts and should instead see something that looks like film telecined to video (pulldown). Please try this out.

Vegas uses 1394 Firewire previews to ensure correct field order (DV is always lower first).

///d@