Am 27.07.2012 22:57, schrieb Michael Mol: > On Fri, Jul 27, 2012 at 4:39 PM, Florian Philipp <li...@binarywings.net> > wrote: >> Am 27.07.2012 22:22, schrieb Michael Mol: >>> On Fri, Jul 27, 2012 at 4:10 PM, Allan Gottlieb <gottl...@nyu.edu> wrote: >>>> I am getting a new laptop. (likely dell 6430). >>>> The two graphics options are intel HD 4000 and nvidia NVS 5200M. >>>> Dell is as expected suggesting the 5200M. >>>> >>>> I do not need 3D or fast response. Dell hinted that DVDs might not play >>>> with the intel HD 4000. This seems weird to me as the 4000 is supposed >>>> to be a big improvement over the 3000 and I can't believe dell or others >>>> would have sold laptops that can't play dvds >>>> >>>> Any comments or experiences? >>> >>> My Duron 750MHz was able to decode DVDs in realtime. After that, all >>> you're doing is blitting (or using xv) the frames to the screen. I >>> would be absolutely shocked if the Intel HD 4000 GPU couldn't handle >>> that basic of a 2D acceleration function. >>> >>> Now, DVDs use MPEG2. Blu-Ray uses h.264, which is a much harder beast >>> to decode in realtime. It's possible the HD 4000 GPU can't handle >>> hardware decode of h.264, but I don't know. I've never looked into it. >>> (Software decode of 1080p h.264 on my Phenom 9650 worked somewhat, but >>> highly active scenes would cause frame drops.) >>> >> >> I've experienced issues playing DVDs on fullscreen with the OSS radeon >> driver. Therefore I'm cautious of assumptions that something works >> simply because the input is easy to decode. Upscaling to large displays >> with high resolutions can be an issue. >> >> I'm not saying the Intel driver cannot handle it. I'm just saying you >> should try it or look for reports. > > How high is 'high' resolution? I was upscaling to 1600x1200 using an a > Radeon 9600; that card would now be almost ten years old. A bit later, > I did the same on a 2.4GHz Pentium 4 using an i845-based Intel > graphics card. Here's the line from lspci, as run in May of 2007: > > 00:02.0 VGA compatible controller: Intel Corporation > 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01) > > Hardware scaling a 2D image is one of the most trivial > hardware-accelerated options GPUs perform. If someone had difficulties > upscaling a 480p (roughly what DVDs are) to 1080p at 24 or 33fps, I > would be very highly suspicious of a software misconfiguration. That > kind of scaling should even be comfortably doable in software on any > modern x86-derived processor. (With the plausible exclusion of the > Atom CPU) >
1920x1080, on-board Radeon HD 4250. I haven't diagnosed it further (except of playing around with mplayer2 options) as it was easier to use the closed source driver. Regards, Florian Philipp
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