24f 2:3:3:2 pulldown with XH-A1 PLEASE HELP!!!

J

John R. Scranton

New member
Alright. I have a tough one here. I want to film using the 24f 2:3:3:2 pulldown option with the xha1. Now, I edit using vegas pro 8.0. However, I do not want the footage to have that "choppy, or strobe look". Especially when using slo motion. So herein lies the question:

Can you interlace the 24f footage to give it a more fluid, film look? If so, what should ALL the settings be set at in the rendering templates and properties of vegas?

My whole reason for wanting to do this is to be able to fit more footage onto a single dvd without having to recompress and lose quality. Is there a better way to achieve this that I don't know about?

If someone can help, PLEASE DO. I have researched so much I think I might freak!!!

Thanks everyone.
 
Sounds like you're barking up the wrong tree. If you want to get rid of the strobe look, and you want fluid slow motion, then you don't want 24F. You want 60i instead.
 
I would look at a plugin like Twixtor (not sure what the options are for Vegas). I have used that with 24f footage slowed down to 20% with amazing results.
 
Thanks. So, is there any way to film in 60i and have more footage on a 4.7 GB DVD? I watch some DVDs shot with an XL2 and they have over 2.5 hrs of footage, and the quality looks excellent, like it was not recompressed much at all.

I can only fit about an hour and 24 mins, and that's rendering at a lower bit rate. Am I doing something wrong? I don't want to jeopardize the footage quality too much, if any. What do you think? Thanks.
 
Frame rate doesn't affect how much space it takes up. It all depends on the bitrate you set for DVD recompression. The more footage you try to fit, the more it'll have to be compressed and the worst it'll look. My advice is to use a program that allows you to encode in multi-pass variable bitrate (VBR) instead of one pass constant bitrate. VBR runs multiple passes to retain maximum quality at a smaller file size. Most DVD authoring program will do this, such as Adobe Encore or DVD Studio Pro.
 
In the Vegas online contents it states that some advantages to filming in progressive scan is that you can fit more on a disc as opposed to 60i. So I'm slightly confused.
 
24P DVDs can have more minutes of footage stored on a disc than 60i DVDs, that's true. 60i takes up 25% more space than 24P does.

However, we have to go back to your original statement:
I do not want the footage to have that "choppy, or strobe look". Especially when using slo motion
Click to expand...
Since that's the case, you NEED to be using 60i. What relevance would it have if 24P could give you more space on the disc, if it's unsuitable for your footage?
 
(I'm assuming you want the DVD to be standard definition, and DVD video compliant.)

It's not unreasonable to fit 2.5 hours of 60i video on a single layer DVD. There are a few ways to boost the quality.

It's important to use 2 pass VBR encoding (calculating the average, and setting low minimum and high maximum bitrates).

You can apply "visually lossless" noise reduction, that will help boost compression performance (by allowing the encoder to use more interframe compression). The MSU denoising filter (for VirtualDub), is designed to be visually lossless (and can improve images) at the default settings:

http://compression.ru/video/denoising/index_en.html

If the video will be viewed on a typical 4:3 CRT television, you can really crank up compression quality by encoding at half-D1 (352x480). On most 4:3 CRT televisions, you won't see a difference in resolution, but compression will be around twice as efficient.
 
Thanks you guys. I am not sure if Vegas 8.0 Pro has VBR encoding. And if it does, what setting do I use. Might you know if Vegas 8.0 Pro supports what you are recommending I do?
 
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