1920x1080 60i/60p to 30p in Vegas, different results

J

joker454

Well-known member
Hi all, possibly a noob question here but I figured I'd ask. I used to use a Sony cx550v camera that records at 1920x1080 60i at 24mbps, but I'd since bought some new Sony cx560v cameras that record at 1920x1080 60p at 28mbps. In both cases I make some footage intended for website use so I convert them to 30p using Vegas Pro 11. I'm noticing that the result footage definitely looks different. The best way to explain it is that the footage from the 550v seems to be clearer to where say you are panning the camera across some trees, you can still make out detail on the trees in your periphery vision. The footage fron the 560v on the other hand seems to be coming out blurry or jittery, where you can't see detail in the trees in your peripheral vision areas until the camera stops panning.

So my question...is this normal, to where converting 60i footage to 30p will look better than converting 60p footage to 30p, or do I maybe just have some settings wrong in Vegas? I've tried with various codecs and resolutions and the results are always the same.
 
What are your render settings?

In theory, 60i should be less sharp when converted to 30p than 60p. But there are a lot of other variables here.
 
For project properties I just had vegas match source settings by choosing a file and matching it. For a file recorded on the 60p cx560v camera that results in:
1920x1080
Field Order: None (proressive scan)
Frame Rate: 59.940
Pixel Aspect 1.000 (square)
Motion Blur Type: Gaussian
Deinterlace method: None

For rendering using WMV:
Quality VBR (86%)
1280x720
Pixel Aspect 1.000 (square)
Frame Rate: 29.970

For rendering usins MainConcept AVC:
1280x720
Main Profile
Frame Rate: 29.970
Field Order: None (progressive scan)
Pixel Aspect 1.000

For footage from the 550v render settings are the same, but project settings get changed to:
Field Order: Upper Field First
Frame Rate: 29.970
Deinterlace Method: Interpolate fields
 
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Based on that, I don't know why the 60i footage would give you a sharper result than 60p footage. In theory, it shouldn't -- but I've never used any footage from either camera.

Try this, though -- on the timeline, disable resample on every clip.
 
Hey that did it, disabling resample fixes it and makes pans looks similar to footage from the 550v. The resultant file was slightly larger, but it rendered much faster with resample off, nice bonus. Thanks so much! What does "smart resample" do anyways, and is there any way to have it disabled by default?
 
joker454 said:
For project properties I just had vegas match source settings by choosing a file and matching it. For a file recorded on the 60p cx560v camera that results in:
1920x1080
Field Order: None (proressive scan)
Frame Rate: 59.940
Pixel Aspect 1.000 (square)
Motion Blur Type: Gaussian
Deinterlace method: None

For rendering using WMV:
Quality VBR (86%)
1280x720
Pixel Aspect 1.000 (square)
Frame Rate: 29.970

For rendering usins MainConcept AVC:
1280x720
Main Profile
Frame Rate: 29.970
Field Order: None (progressive scan)
Pixel Aspect 1.000

For footage from the 550v render settings are the same, but project settings get changed to:
Field Order: Upper Field First
Frame Rate: 29.970
Deinterlace Method: Interpolate fields
Click to expand...

When one has both interlaced and progressive clips like this within the same project, which type should be selected for matching the media setting properties?

I ask because I'm wondering if you set up your project properties to deinterlace, will that negatively impact the progressive clips in some way?
 
Mark, Not a dumb question at all. Here's the way I'd do this.

Project properties at 1920x1080 59.94 fps Progressive.

For each Interlaced event apply the Yohng Yadif DeInterlacer as a Media FX.

Set "Disable Resample" to all video events.

Render to progressive (either mp4 or wmv).

...Jerry
 
amendegw said:
Mark, Not a dumb question at all. Here's the way I'd do this.

Project properties at 1920x1080 59.94 fps Progressive.

For each Interlaced event apply the Yohng Yadif DeInterlacer as a Media FX.

Set "Disable Resample" to all video events.

Render to progressive (either mp4 or wmv).

...Jerry
Click to expand...

Thank you Jerry. I posted a similar question in a Vegas forum and got no results. I was starting to wonder.

We need to do a multi cam edit with clips from both a DSLR and a camcorder. The DSLR is 23.976 fps while the Canon HV30 camcorder is 29.970 fps in a 60i wrapper.

How would those facts change your recommendation?

Mark
 
Mark,

Assuming you are rendering to progressive, the only thing I'd change is to set your project properties to match the DSLR 23.976 (I'm assuming that's progressive?).

I'll also say, it's always best to do some testing. Add a couple of clips, render them out and see what your render looks like. There are lots of variables and often times one answer does not fit everyone's needs.

...Jerry
 
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