MPEG Writer/Converter Options

[Dymonds]

Hiya

I have a MPEG Writer/Converter (free version), and there a few things on it i dont really understand.

I put in my SOURCE file, and file target option.

Then underneath there are 'MPEG Output Options':-

The Format is set to - Standard MPEG-1 (which I assume is correct, as I cant change it)

Autosize - Is checked

PAL - Is checked

Frame Rate - Now this varies from 7 - 60 I am unsure of what frame rate i need to use

Bit Rate - This again varies from 1000-4000 - any ideas which direction I need to go for this one?

Width & Height are both set @ 'Original' - can anyone tell me what this is the measurements OF? and how do I know which i need to use.

If anyone has any help they can offer me, It would be much appreciated!

Thanx to anyone

[Dymonds]

Oh another thing is :
Some avi's I put in to convert comes up with :-

Unable to load source file. The stream my be corrupt or the data type is unsupported


Why are these SO different to the ones that work?

Thanx Dy