[MPlayer-users] Is S-Video and external monitor limited by laptop's graphics card's max resolution.

Reshat Sabiq sabiq at csociety.org
Wed Aug 31 05:51:36 CEST 2005


Rich Felker wrote:

>On Sat, Aug 27, 2005 at 08:24:02PM -0500, Reshat Sabiq wrote:
>  
>
>>Reshat Sabiq wrote:
>>
>>    
>>
>>>Looks like it's all covered at:
>>>http://www.michaeldvd.com.au/Articles/PALvsNTSC/PALvsNTSC.asp
>>>
>>>So then i'm making the following conclusions (please correct me if i'm 
>>>wrong):
>>>1. both 1024x768 max resolution laptop and 1280x768 one will have the 
>>>same quality of playback via S-Video, and in fact resolutions are 
>>>irrelevant, as Reimar said, and all modern resolutions would have the 
>>>same playback.
>>>2. a (DVD) stream played back on a computer monitor (VGA or LCD) from 
>>>a computer will be higher quality than the same stream played back via 
>>>S-Video, because more pixels will be used for rendering
>>>3. a laptop with max resolution of 1024x768 would be able to play a 
>>>wide screen DVD on a "16:9" VGA (e.g., at 1280x768)
>>>
>>>Thanks.
>>>      
>>>
>>I think answer to 1 is Yes.
>>    
>>
>
>Most definitely.
>
>  
>
>>On 2., there probably won't be any different between a comparable TV + 
>>S-Video, or a monitor, since the TV will have larger pixels, and a 
>>monitor would scale a pixel to more than 1. Though i don't exactly 
>>    
>>
>
>But actually this isn't the case. High quality videos have _more_
>resolution than a TV is capable of reproducing, especially a 4:3 TV.
>
>  
>
Well, i was referring to an HDTV (which would be able to support the 
resolution of, say, DVD).

>>understand what happens if, say, horizontal resolution is not a multiple 
>>of 720. I guess some pixels get rendered more than once and some don't.
>>    
>>
>
>No, this is incredibly horrible. The image is resampled.
>  
>
I see. So it basically kinda ends up rendering 1.x pixels per DVD pixel.

>>On 3., i made a typo, 1280x768 is not 16:9, i meant to say 1280x720. I'm 
>>pretty sure the answer is yes, although not all of external VGA or LCD 
>>resolutions might be supported. So i guess the answer is 75% chance yes, 
>>25% No, or something like that.
>>    
>>
>
>I don't see how the lcd resolution is relevant if you're using an
>external monitor.
>  
>
I guess this has to do w/ the graphics card and the drivers. A laptop 
say w/ 1024x768 max resolution may not be able to handle 1920x1200 on an 
external monitor. I think this is why my laptop (on Windows, haven't 
configed my FC3 for dual-head yet) only gave me 5 out 7 choices of my 
desktop monitor's resolution.

>Rich
>
>  
>
I ended up buying an upper-middle-end laptop, and we'll be sending my 
current one, which is close to the new one, to my relatives. But i'm 
still interested in answers. :)

Thanks.
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