question about importing HDV from tape

dogwalker wrote on 8/31/2008, 8:21 AM
First off, my target is simply SD dvds for now, as my particularly videos are simply home videos (band, campouts, etc). I record in HD on my HV30, because I've read that you still get better quality if your source is HD, even if your target is SD.

When I capture, I'm capturing as HD, and then I'll render as SD. Would I get equal quality if I simply imported the tape as SD/DV onto my hard drive and edited that?

Second question has to do with scene detection and splitting.

I just imported video from my HV30, and the video was broken into 4 segments. I was surprised, because I turned off HD scene detection, but ok. In fact, it turned out doing a good job on three of those segments.

The first segment, however, was badly placed, so I'm trying to cut about 15 seconds off the first m2t file and will use that with the second file.

I've loaded File1.m2t, split it where I want, and I'd like to losslessly save the two splits out.

A while back, Eugenia had posted a tip that you can save the project and select "Save Media Files" and it would save the trimmed sections. However, no matter what I do, it's saving the whole file.

Is there a way to split .m2t? I haven't tried HDVSplit, simply using the Vegas importer. However, when I used to import DV, I used WinDV with no problems.

thanks!

Comments

JohnnyRoy wrote on 8/31/2008, 9:02 AM
> When I capture, I'm capturing as HD, and then I'll render as SD. Would I get equal quality if I simply imported the tape as SD/DV onto my hard drive and edited that?

I would imagine that this depends on your camera since the camera is doing the down convert. My Sony HVR-Z1U down converts HD to SD with exceptional quality. I really can't tell the difference between down converting in-camera are converting with Vegas.

Having said that, your original HDV footage uses a color sampling of 4:2:0 while DV is only 4:1:1 so you will loose color sampling. Since your final output is DVD MPEG which also uses 4:2:0, you would get better quality by capturing HDV because you won't loose any color sampling that way.

> I've loaded File1.m2t, split it where I want, and I'd like to losslessly save the two splits out.

Just render them to m2t. Vegas Pro 8 does smart rendering and it will see that no processing has taken place and should simply copy the footage with no loss.

> A while back, Eugenia had posted a tip that you can save the project and select "Save Media Files" and it would save the trimmed sections. However, no matter what I do, it's saving the whole file.

Save and trim has never worked for M2T files (or any long GOP format). It always saves the whole file. Do a smart render instead.

~jr
dogwalker wrote on 8/31/2008, 2:51 PM
Thanks, Johnny, I'll give that a shot! And I appreciate the info on the color sampling.

Ok, I just rendered as .m2t, and it worked great! Appears to be lossless.

Thanks!!
dogwalker wrote on 9/5/2008, 2:14 PM
Wow, I just want to thank everyone again. I finally had a chance last night to work on these movies I'd shot in HDV and captured to my drive in HD. Johnny's points were fantastic and spot on.

Last night I burned a dvd from these clips, which included our kids playing on the wii, footage of our band and football team, and some footage I'd shot back on July 4.

I was amazed at how nice the dvd was! Our relatives were blown away as well.

Great stuff, thanks again!