what am I doing wrong and a question.

tonyatl wrote on 12/2/2007, 11:48 AM

I shoot the footage looks good ,capture it looks good in the little window.Then if I play one if the avi's on the same computer thru one of my players it looks like garbage,not sharp, colors looks dull.
Also I heard about capturing in qt lossless, is it possible to do in vegas?

Thanks

Comments

tonyatl wrote on 12/2/2007, 4:07 PM

bump

Coursedesign wrote on 12/2/2007, 4:24 PM

What are you shooting? DV, HDV, ...?

"Little window" where? In the capture utility? In the preview window in Vegas?

When you play an avi in a player, which player and how big is your image?

Why would you want to capture to QT lossless? Won't do you much good unless you have really high quality video in a pro format.

I capture to QT uncompressed through a BMD card, but that's from a truly uncompressed source (from a broadcast camera).

tonyatl wrote on 12/2/2007, 7:03 PM

Sorry I should been more through in my answer.
Im shooting dv with a dvx100a, it looks good in the capture window in vegas.It looks poor in the preview window in vegas and then I tried QT when small looks good like 320 sharp and colors looks good but at 640 looks not sharp and colors looks washed out, then I tired avs dvd player the picture was bigger looked poor.
I wanted QT lossless because I got the creative cow dvd on rendering and he spoke about and how its smaller then avi files which would make it cool for saving long term.

riredale wrote on 12/2/2007, 8:32 PM

I'm not sure what you're trying to do here.

If you import DV over Firewire then it's coming into the PC as a 480x720 image (in NTSC countries). The DV format is already "compressed" over a raw video image (by about 5:1). Saving a DV clip in a "lossless" format makes no sense. You're talking apples and oranges.

What are you trying to accomplish? What is the final purpose?

tonyatl wrote on 12/2/2007, 8:58 PM

I thought when you capture its uncompressed avi 13 gig per hour of footage?

rs170a wrote on 12/3/2007, 3:04 AM

By it's very nature, DV is already compressed )approx. 5:1) on tape.
It doesn't make any difference if it's captured by a PC or a Mac. It's still 13 gig per hour.
Uncompressed is MUCH larger (90 gig/hr. if not more).

Mike

Chienworks wrote on 12/3/2007, 3:54 AM

Uncompressed RGB is about 107GB/hour, which makes the DV compression ratio closer to 8.2:1. I still have no idea why it's referred to as 5:1. What has happened to math skills these days???!?!! ;)

By the way, both QuickTime DV and AVI DV are 13GB/hour, and both QuickTime RGB uncompressed and AVI RGB uncompressed are about 107GB/hour. QuickTime and AVI are simply containers for the video data. The data inside can be identical.

John_Cline wrote on 12/3/2007, 5:15 AM

The 5:1 figure is calculated after 50% chroma downsampling. SD without any chroma downsampling is about 250Mb/s (or 10 times the DV data rate) but after chroma downsampling of 50% the DCT compression is applied at a 5:1, not a 10:1 rate.

RalphM wrote on 12/3/2007, 5:46 AM

Do you have your preview window set to "Best"? If not, you will see a lower resolution image.

Also, some media players show a reduced resolution image.

tonyatl wrote on 12/4/2007, 10:24 AM

thanks made a difference and thanks for the info I learned a bunch.