Some F350 footage in .wmv format

[Carroll Lam]

Here's a 3-min, 183 MB, Windows Media file of some recent f350 test footage I took.

This footage was collected with Cine4 and HiSat on.

Canon KH20X64KRS lens.

Edited with Vegas 7

http://www.clamcamvideo.com/Patio.wmv

Carroll Lam

[Hayes Roberts]

A pleasant patio, indeed; and a nice soundtrack, I might add.

[Bill Skinner]

Great job, nice footage. I was just wondering what is the cause of the distortion I was seeing. A wavy interlace like problem.

[Carroll Lam]

Originally Posted by Bill Skinner

I was just wondering what is the cause of the distortion I was seeing. A wavy interlace like problem.

Hmmm. Your computer playback, maybe? I'm not seeing any but I welcome other's evaluation.

Carroll Lam

[Matthew Ernest Adams]

I was seeing the interlacing too, but I think it was because my computer was unable to play the clip full speed and when it would slow, the interlacing was apparent (just as it should). Not sure why computer wouldn't play it very well? Maybe because I'm using Quicktime to play a wmv? Not enough RAM (1GB)?

[Brian Jansen]

Originally Posted by Bill Skinner

Great job, nice footage. I was just wondering what is the cause of the distortion I was seeing. A wavy interlace like problem.

I'm seeing the wavy interlace like problem as well. Look at the womans arms
in the begining as she moves them back and forth. You can see it in the motion and if you pause the wmv at the right spot during this.. you can really see the odd distortion.
What frame rate was it shot at?
Did you make the wmv from a preSet in Vegas?
Would be good to know if the problem is Vegas or WME.

[Carroll Lam]

Originally Posted by Brian Jansen

I'm seeing the wavy interlace like problem as well. Look at the womans arms in the begining as she moves them back and forth. You can see it in the motion and if you pause the wmv at the right spot during this.. you can really see the odd distortion.

I believe I see what you are talking about. I was thinking you meant some kind of wavy horizontal distortion. When I pause the playback where there is something moving horizontally in the frame there is an interlace "halo" around the moving objects - like the woman's arm.

What frame rate was it shot at?

60i

Did you make the wmv from a preSet in Vegas?

Yes.

Would be good to know if the problem is Vegas or WME.

Since everthing was done in Vegas you'd have to point at Vegas.

Carroll Lam

[John McCully]

[Since everthing was done in Vegas you'd have to point at Vegas.]

Carroll Lam[/QUOTE]

Not necessarily perhaps. It would be great to see a few seconds of the original footage, say from 16 seconds to 20 seconds right off the camera. Plays perfectly smoothly on my core 2 duo laptop in both windows media player and VLC player. Yes, I see the interlacing happening as the woman swings her arms and it does appear a bit excessive however that could be the camera or the WMV compression. It could also be something happening in Vegas.

In any event nice stuff, lovely colors, great depth of field, cool zooms. And I like the music too.

[Carroll Lam]

Here's the original source clip from the beginning of the edit:

http://www.clamcamvideo.com/C0025.MXF

The posted edit was rendered with the Windows Media Video 9 profile within Vegas. I tried rendering with another wmv profile within Vegas - Windows Media Video 9 Advanced Profile - with the same interlace "aura" results.

Here's another 40MB edit using Vegas in which the source was .m2t video from a Sony Z1U. This edit does not seem to exhibit the interlacing problem.

http://www.clamcamvideo.com/Humble-1080.wmv

I hope this is not a problem of MXF files with Vegas.

Carroll Lam

[Carroll Lam]

I looked closely at an MXF version of the edit recorded back to the camcorder's disk and can find no evidence of the interlace aura.

Carroll Lam

[Nate Weaver]

Am I missing something here? If the clips were 60i, and we're viewing on a computer screen, I'd expect to see the interlacing.

From what I can see, there's nothing wrong with any of it anywhere.

[Greg Boston]

Originally Posted by Nate Weaver

Am I missing something here? If the clips were 60i, and we're viewing on a computer screen, I'd expect to see the interlacing.

From what I can see, there's nothing wrong with any of it anywhere.

That's what I was thinking also. Unless Carroll de-interlaces the video before rendering, you should see interlace artifacts on a computer monitor.

I'm going to have a look at the original .MXF file.

-gb-

[Nate Weaver]

Originally Posted by Greg Boston

I'm going to have a look at the original .MXF file.

Not to pre-empt you, but the MXF is perfectly fine 60i video that plays out correctly via Decklink card to HD CRT. No interlace probs.

[John McCully]

Carroll

How cool indeed. I placed the original and the wmv of the same footage on the Vegas 7 timeline and lined them up precisely comparing oranges to oranges. I also placed the Z1 footage up there but of course but that was oranges to apples even as it was dog to dog.

I should point out that I’m viewing this all on a Dell 24inch LCD 1920 x 1200 pixels.

1) I do not see an ‘aura’. Never did.
2) The wmv render exhibits noise, not a lot but it’s there, while the original footage is clean, super clean.
3) The interlacing lines appear to my eyes to be the same.
4) I suspect I’m seeing the interlacing lines because the footage off this camera is so incredibly sharp and beautiful.
5) The Z1 footage looks good, and while I know this is oranges and apples, it does look relatively soft. I’m not making a mountain out of that but how will I ever be happy with anything less than XDCAM again.

Hope that’s helpful.

[Nate Weaver]

Originally Posted by John McCully

4) I suspect I’m seeing the interlacing lines because the footage off this camera is so incredibly sharp and beautiful.

You're seeing interlacing lines because you're looking at interlaced frames on a progressive display. It happens with any 60i material.