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HD content + a 7inch Liliput = ?

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  • HD content + a 7inch Liliput = ?

    I was wondering that the Nvidia ION based motherboards boast of HD playback, but do we really need that if we want to view it on a 800x480 screen ?
    since the output is on a lower res screen does it still tax the CPU?

    so would i survive with my HD library (only 720p ) using an intel offering ?? or would i NEED an ION based system?

    also does HD content still look pretty on such a low res screen?

  • #2
    on the seven inch screen its not about looking pretty, its about the CPU usuage.

    Sure you can play the videos off a regular Intel Graphics chip but performance will be greatly reduced.

    The image is so compressed in size you wont notice a difference (at least in my experience)

    I have a ZOTAC Ion Dual Core Atom and notice a huge difference in speed and performance

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    • #3
      can u please specify exactly what u r trying to say ?

      let me rephrase for your ease...
      1) watching HD content on a low res screen, does it compress so much that it actually looks ugly??
      2) i assume u can pretty easily playback HD content (remember its just talking about 720p, NOT 1080p ) on the ION, but will playback on the intel chip be stuttery and look like a slide show? - i promise not to run any background applications

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      • #4
        It's been awhile since I setup the video on my car PC with NVIDIA, but if I recall, after you create the custom resolution with their utility, to select it, I think I had to go to the Windows display settings, then to advanced, then click the "list all modes" button, and select it from there.

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        • #5
          Its all about CPU verse GPU usage.....

          Graphics chips come with special optimizations that allow them to do graphics rendering that would be very taxing for a CPU to perform. For standard video playback this has already been implemented for quite a while requiring only container decoding to be done by the CPU. Newer video formats like h.264 (blurays, hd tv recordings and their associated rips) require about 8-10x the cpu usage to decode compared to regular video due to the high compression and advanced algorithms used. Now it is possible to transcode video from 1080p to 720p or even 480p which would be perfectly optimized for that display but the only difference will be file size. Especially in an underpowered CPU such as that, your talking about the difference between 720p playback eating your entire cpu or 720p playback using single digit CPU usage and being able to multi-task.

          Hope that helps....
          openMobile - An open source C# Front End (why choose openMobile?)
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          • #6
            I have an Acer Revo with the Nvidia Ion in my Kia hooked up to a transflective Liliput 7". I also have a Usb Blu-Ray drive.

            The Blu-Ray movies do look better than the Dvd's. Sharper and less "blurred". But most people would never notice the difference. I have been installing 1080p projectors for the last 5-6 years and consider myself a videophile so I notice these things
            My 2007 Yukon XL setup. http://www.mp3car.com/vbulletin/show...64-5000-a.html

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            • #7
              Originally posted by hailrazer View Post
              I have an Acer Revo with the Nvidia Ion in my Kia hooked up to a transflective Liliput 7". I also have a Usb Blu-Ray drive.

              The Blu-Ray movies do look better than the Dvd's. Sharper and less "blurred". But most people would never notice the difference. I have been installing 1080p projectors for the last 5-6 years and consider myself a videophile so I notice these things
              That has absolutely nothing to do with display resolution though, it has to do with the higher quality encoding and the better quality source. Idc how good of a videophile you are, you wont be able to tell the difference between a 720p movie on a 480p screen and a 1080p movie on a 480p screen, its just a matter of when the resizing occurs.
              openMobile - An open source C# Front End (why choose openMobile?)
              - Always Recruiting Developers -
              Like what you see? Donations are always welcome

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              • #8
                Originally posted by justchat_1 View Post
                That has absolutely nothing to do with display resolution though, it has to do with the higher quality encoding and the better quality source. Idc how good of a videophile you are, you wont be able to tell the difference between a 720p movie on a 480p screen and a 1080p movie on a 480p screen, its just a matter of when the resizing occurs.
                I never said ANYTHING about seeing the difference in 720p and 1080p on a 480p screen now did I ?

                I said that Blu-ray looks better on the 7" Liliput screen than DVD. Which was in answer to this question :
                also does HD content still look pretty on such a low res screen?
                My 2007 Yukon XL setup. http://www.mp3car.com/vbulletin/show...64-5000-a.html

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                • #9
                  Well it doesn't matter if the video content is HD or not, the screens resolution is 800 x 480 and thats all the pixels you are gonna get on the screen.

                  A DVD is gennerally 720x480 for widescreen, and 720p is 1360x720. Meaning that both are limited at 800 x 480 anyway, so that whole thing is overkill. Granted a DVD is slightly lower than the native res, you won't notice the difference in quality at such a small screen size.
                  Car PC Project Status
                  Audio......[====================] 100%
                  Computer.[====================] 100%
                  Car.........[====================] 30%
                  <------ If my information is helpful, give me some rep! The scale thingy :)

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                  • #10
                    Yes I know all of that. And we can debate this all day long. But there is one simple fact. When I put in a Transformers DVD and a Transformers BluRay and there is a noticeable difference. Its sharper and more detail. That's real life results with real life hardware.
                    My 2007 Yukon XL setup. http://www.mp3car.com/vbulletin/show...64-5000-a.html

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                    • #11
                      It probably does, but like I said, its a pretty marginal amount. It's not like going from DVD to blu-ray on a 42" TV. IMO HD on a 7" screen is a waste of money if you are buying a blu-ray drive.
                      It's like putting a V8 engine on your bicycle, yea it has a lot of power, but you only have a 2" wide tire so its not gonna do you much good.

                      Anyway, back to the OP, The CPU will still have to process the video but with a newer system it shouldn't be much trouble. Just remember the limiting factor is the CPU not the GPU with HD video.
                      Car PC Project Status
                      Audio......[====================] 100%
                      Computer.[====================] 100%
                      Car.........[====================] 30%
                      <------ If my information is helpful, give me some rep! The scale thingy :)

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                      • #12
                        For me it wasn't about video quality. I know on a 7" screen the difference is marginal. For me it was because I have gone to a all BluRay collection. So buying a $90 BluRay player for the car made more sense than buying BluRays and Dvds.
                        My 2007 Yukon XL setup. http://www.mp3car.com/vbulletin/show...64-5000-a.html

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                        • #13
                          Thanks a lot u guys,
                          i think hailrazer answered exactly what i needed to know in terms of picture quality!

                          but im still not convinced if an atom cpu can play the 720p movies on it own without the help from an ion gpu

                          the reason i need to know this is because where i live ..... the ion platform is still not available but the Intel® Desktop Board D945GCLF2D is available readily, so should i go for it ????

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                          • #14
                            Thats not a yes or no question....it depends on a wide variety of factors. 720p video can be encoded using at least a hundred different combinations of options. Very basic 720p will be able to play but it will use very close to 100% CPU, and will suffer in high action scenes when frames will need to be dropped. Higher complexity encodings will definitely not playback without stuttering or transcoding. I would recommend trying to find an ion...
                            openMobile - An open source C# Front End (why choose openMobile?)
                            - Always Recruiting Developers -
                            Like what you see? Donations are always welcome

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                            • #15
                              i think i will go overkill now !!! core2duo

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