[G4] iDVD-different encoding schemes?

[James Asherman]

David Crandon wrote:

>Ok, so this is the only pref I can change that affects the quality of
>the recording? It always has to be MPEG2, but I can change the bit rate
>to two different settings?
>
>David
>
With iMovie and iDVD2 you render DV from iMovie, and import that into 
iDVD. iDVD then renders the mpeg2 for your DVD and also decides the 
bitrate based on the amount of footage you have put in.
But there are only two choices. It flips when your footage excedes 60 
minutes.
So no, YOU can't change it, but it is a very high quality setting anyway.

With DVDStudio Pro you render the mpeg2 before entering the DVD 
producing program and have a sliding scale
in the render panel with which to make your quality v. size decisions.
Jim

>
>James Asherman wrote:
>  
>
>>David Crandon wrote:
>>
>>    
>>
>>>So the bitrate is simply how fast the data is fed to the burner? It's
>>>not like a "sampling rate" that affects quality, correct?
>>>
>>>david
>>>
>>>      
>>>
>>No, the bitrate IS like the "sampling" rate that affects quality and
>>consequently  program size..
>>
>>Speed that te data is fed to the burner is another issue altogether.
>>Jim
>>
>>    
>>
>>>James Asherman wrote:
>>>
>>>
>>>      
>>>
>>>>David Crandon wrote:
>>>>
>>>>
>>>>
>>>>        
>>>>
>>>>>Interesting...so if I were to use another program to record the DVD (if
>>>>>there is one for the Mac) I could get the 3-4 hour record times? Or, for
>>>>>those lost souls who use a PC, I assume they probably can do that?
>>>>>
>>>>>
>>>>>
>>>>>          
>>>>>
>>>>I don't know nothin' 'bout no Pc's.
>>>>anyway with DVDSTudio Pro one can adjust the bitrate and get longer
>>>>record times (for starters).
>>>>
>>>>
>>>>
>>>>        
>>>>
>>>>>David
>>>>>
>>>>>James Asherman wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>          
>>>>>
>>>>>>David Crandon wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>            
>>>>>>
>>>>>>>1 hour or 1 1/2 hour mode? Aren't DVD's supposed to hold 4+ gigs? Enough
>>>>>>>for 2-4 hours of video?
>>>>>>>
>>>>>>>David
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>              
>>>>>>>
>>>>>>Yes they do. yes they are. yes it is.
>>>>>>But iDVD only encodes at Data rates the result in program times of 1
>>>>>>hour  or 1+1/12 hour.
>>>>>>This ensures further sales of DVDSP, I guess.
>>>>>>The good news is that it is VERY easy and comes out good and when you
>>>>>>pop it in a DVD player it makes a nice impression.
>>>>>>Jim
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>            
>>>>>>
>>>>>>>              
>>>>>>>
>>>>----------
>>>>G
>>>>
>>>>
>>>>        
>>>>