Colorspace Question, ConverttoRGB32()

[Kero777]

I was re-reading the filtering guide yesterday and something caught my eye this time. I have payed so much attention to the actual filtering in the past that I have completely neglected the subject of colorspace. As a matter of fact, I don't know that much about it. I know that when a source is taken from a DVD it is in the YV12 colorspace, but what happens if you forget to add ConverttoRGB32() or ConverttoRGB24() to the end of your script before making Lagarith clips and importing it into your editing program? Is there a real difference between RGB24() and RGB32() and do they affect quality of the final product?

I'm curious because I completely forgot to change the colorspace to RGB before making clips and importing into Vegas for the project I'm working on and as of yet I don't see any problems. Thanks.

[Zarxrax]

Either lagarith or your editing program did the conversion for you, so there's little or no difference.

[Kero777]

Either lagarith or your editing program did the conversion for you, so there's little or no difference.

Thanks. And there's no big difference between RGB24() and RGB32() so I can choose either? I found a good explanation somewhere, but forget where it was.

[BasharOfTheAges]

Either lagarith or your editing program did the conversion for you, so there's little or no difference.

Thanks. And there's no big difference between RGB24() and RGB32() so I can choose either? I found a good explanation somewhere, but forget where it was.

The 8bits of difference between them are an alpha layer. Unless you're planning on layering your exports onto something else and need to have transparencies preserved, you don't really need RGB32.

[Zarxrax]

The 8bits of difference between them are an alpha layer. Unless you're planning on layering your exports onto something else and need to have transparencies preserved, you don't really need RGB32.

Not really. RGBA is used to refer to RGB that contains an alpha layer. RGB32 basically has an extra empty (or perhaps non empty) channel thrown on there because computers can process data on 32bit chunks much better than they can on 24bit chunks. So essentially, RGB32 is for all intents and purposes the same as RGB24, but more optimized for speed. There is almost never any reason to use RGB24.

[BasharOfTheAges]

The 8bits of difference between them are an alpha layer. Unless you're planning on layering your exports onto something else and need to have transparencies preserved, you don't really need RGB32.

Not really. RGBA is used to refer to RGB that contains an alpha layer. RGB32 basically has an extra empty (or perhaps non empty) channel thrown on there because computers can process data on 32bit chunks much better than they can on 24bit chunks. So essentially, RGB32 is for all intents and purposes the same as RGB24, but more optimized for speed. There is almost never any reason to use RGB24.

Well, I was sure misinformed then.

[Kero777]

The 8bits of difference between them are an alpha layer. Unless you're planning on layering your exports onto something else and need to have transparencies preserved, you don't really need RGB32.

Not really. RGBA is used to refer to RGB that contains an alpha layer. RGB32 basically has an extra empty (or perhaps non empty) channel thrown on there because computers can process data on 32bit chunks much better than they can on 24bit chunks. So essentially, RGB32 is for all intents and purposes the same as RGB24, but more optimized for speed. There is almost never any reason to use RGB24.

Ah, I see. Thank you, Zarxrax. I realized though while making a search that just as many people who use RGB32() use RGB24() instead... I wonder if they don't know about this either? It's good to know.