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On 12/02/2012 03:02 AM, Allan Gottlieb wrote: |
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> On Sat, Dec 01 2012, Florian Philipp wrote: |
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> |
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>> Am 28.07.2012 10:22, schrieb Florian Philipp: |
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>>> Am 27.07.2012 22:57, schrieb Michael Mol: |
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>>>> On Fri, Jul 27, 2012 at 4:39 PM, Florian Philipp |
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>>>> <lists@×××××××××××.net> wrote: |
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>>>>> Am 27.07.2012 22:22, schrieb Michael Mol: |
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>>>>>> On Fri, Jul 27, 2012 at 4:10 PM, Allan Gottlieb<gottlieb@×××.edu> wrote: |
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>>>>>>> I am getting a new laptop. (likely dell 6430). |
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>>>>>>> The two graphics options are intel HD 4000 and nvidia NVS 5200M. |
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>>>>>>> Dell is as expected suggesting the 5200M. |
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>>>>>>> |
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>>>>>>> I do not need 3D or fast response. Dell hinted that DVDs might not play |
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>>>>>>> with the intel HD 4000. This seems weird to me as the 4000 is supposed |
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>>>>>>> to be a big improvement over the 3000 and I can't believe dell or others |
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>>>>>>> would have sold laptops that can't play dvds |
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>>>>>>> |
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>>>>>>> Any comments or experiences? |
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>>>>>> My Duron 750MHz was able to decode DVDs in realtime. After that, all |
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>>>>>> you're doing is blitting (or using xv) the frames to the screen. I |
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>>>>>> would be absolutely shocked if the Intel HD 4000 GPU couldn't handle |
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>>>>>> that basic of a 2D acceleration function. |
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>>>>>> |
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>>>>>> Now, DVDs use MPEG2. Blu-Ray uses h.264, which is a much harder beast |
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>>>>>> to decode in realtime. It's possible the HD 4000 GPU can't handle |
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>>>>>> hardware decode of h.264, but I don't know. I've never looked into it. |
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>>>>>> (Software decode of 1080p h.264 on my Phenom 9650 worked somewhat, but |
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>>>>>> highly active scenes would cause frame drops.) |
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>>>>>> |
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>>>>> I've experienced issues playing DVDs on fullscreen with the OSS radeon |
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>>>>> driver. Therefore I'm cautious of assumptions that something works |
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>>>>> simply because the input is easy to decode. Upscaling to large displays |
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>>>>> with high resolutions can be an issue. |
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>>>>> |
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>>>>> I'm not saying the Intel driver cannot handle it. I'm just saying you |
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>>>>> should try it or look for reports. |
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>>>> How high is 'high' resolution? I was upscaling to 1600x1200 using an a |
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>>>> Radeon 9600; that card would now be almost ten years old. A bit later, |
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>>>> I did the same on a 2.4GHz Pentium 4 using an i845-based Intel |
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>>>> graphics card. Here's the line from lspci, as run in May of 2007: |
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>>>> |
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>>>> 00:02.0 VGA compatible controller: Intel Corporation |
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>>>> 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01) |
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>>>> |
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>>>> Hardware scaling a 2D image is one of the most trivial |
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>>>> hardware-accelerated options GPUs perform. If someone had difficulties |
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>>>> upscaling a 480p (roughly what DVDs are) to 1080p at 24 or 33fps, I |
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>>>> would be very highly suspicious of a software misconfiguration. That |
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>>>> kind of scaling should even be comfortably doable in software on any |
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>>>> modern x86-derived processor. (With the plausible exclusion of the |
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>>>> Atom CPU) |
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>>>> |
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>>> 1920x1080, on-board Radeon HD 4250. I haven't diagnosed it further |
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>>> (except of playing around with mplayer2 options) as it was easier to use |
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>>> the closed source driver. |
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>>> |
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>>> Regards, |
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>>> Florian Philipp |
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>> |
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>> I realize this thread is pretty stale but since I talked bullshit and |
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>> just now realized it, I want to correct myself: |
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>> |
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>> Since updating the kernel to 3.5 forced me to update the X server beyond |
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>> 1.11 which in turn forced me to update ati-drivers to a version that no |
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>> longer supported my Radeon HD 4250, I had to look into my issues with |
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>> the open source driver. |
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>> |
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>> It turns out, my problems had two reasons: |
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>> - I didn't enable KMS and DRM for radeon in the kernel |
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>> - I didn't have x11-drivers/radeon-ucode installed |
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>> |
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>> Both resulted in a fully functioning X server that |
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>> - could run glxgears just fine |
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>> - could (with some tuning) render videos in DVD quality with opengl output |
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>> - was too slow for videos in any higher resolution |
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>> |
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>> Regards, |
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>> Florian Philipp |
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> Thanks for the response. I should say that I have indeed purchased the |
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> laptop with intel graphics and it works fine with DVDs. |
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> |
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> allan |
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> |
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> |
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|
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My laptop HP g4-1057tu of HD 3000 GPU can handle hardware decode of 720P easily with vaapi-mplayer¡«¡«¡«¡« |
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