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BlueSky: 901-Type That Does HD Video?
I use my 901 quite bit to watch TV via something called "SageTV".
Think TIVO on steroids with a remote client. It works pretty well for non-HD, but for HD I have to tell it to do on-the-fly transcoding and the motion still isn't all that wonderful. I'm wondering how much of this is the video card or chipset or whatever it is onboard the 901. Been hearing about a new generation of NVIDIA cards that somehow do a better job of rendering HD. Is there hope of something with the 901's battery life, but which can render full HD? -- PeteCresswell |
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BlueSky: 901-Type That Does HD Video?
(PeteCresswell) wrote:
I use my 901 quite bit to watch TV via something called "SageTV". Think TIVO on steroids with a remote client. It works pretty well for non-HD, but for HD I have to tell it to do on-the-fly transcoding and the motion still isn't all that wonderful. I'm wondering how much of this is the video card or chipset or whatever it is onboard the 901. Been hearing about a new generation of NVIDIA cards that somehow do a better job of rendering HD. Is there hope of something with the 901's battery life, but which can render full HD? So when you looked for "HD capable netbook", what did you find ? http://apcmag.com/europe-gets-new-ion-netbook.htm First, evaluate the video format in question, on a highly capable hardware platform. To see if the format actually supports buttery smooth video rendering. Some compression formats aren't that smooth, so you may be aiming for smoothness where it can't exist. Depending on the level of compression of the video format, it may never be possible to get good quality. (This is one of the jokes of digital TV, where the initial design may have looked fantastic, but once the cable company twists the compression knob, it looks like crap.) Nvidia and ATI has been steadily adding video decoding acceleration to generations of hardware. They're supposed to be at the point were almost the whole thing can be done in the GPU. But with so many video formats, only the major ones may have that kind of acceleration. For example, you may see a difference in the maturity of Adobe Flash playback, versus a DVD player application. ATI AVIVO (UVD 2.2) http://en.wikipedia.org/wiki/UVD Nvidia Purevideo (VP3) http://en.wikipedia.org/wiki/Purevideo (List of ION netbooks at the bottom - ION is apparently VP3) http://en.wikipedia.org/wiki/Nvidia_Ion The only "guaranteed" solution, is massive horsepower, to cover corner cases where all the necessary items don't happen to line up. When you're on a platform like netbook (where I hear Intel won't let netbook makers use dual core processors), there are necessarily limits as to how much you can do. Maybe switching up to a laptop with a screen of the same rough size as your netbook, you might be better equipped for less than optimal software ? http://www.firingsquad.com/print_art...icle_ id=2272 "HTPC enthusiasts just want their system to work." The other problem I have, is finding up to date articles, comparing performance with the various brands of hardware. If all I can find is articles from 2007, those may not represent the situation today in 2009. Without someone to do head to head comparisons on a regular basis, it is pretty hard to tell what the hardware is capable of. Paul |
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BlueSky: 901-Type That Does HD Video?
Per Paul:
(huge amount of useful info clipped) That one made it to my "Keepers" file. Thanks for the detailed and helpful response. As anybody reading my OP may have already surmised, I'm not encumbered with a great deal of knowledge about this stuff. Having said that, I suspect that what I'm looking for is rendering of OTA broadcasts in what the TV program guide calls "HD" or "MPEG2-PS 720P@60 fps". fps renders ok. Accordingly, what I did was copy a known "HD" program to a memory stick. So when I go shopping, I'll just plug the memory stick into the candidate PC and see how well Windows Media Player deals with it. That sb a valid test, right? -- PeteCresswell |
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BlueSky: 901-Type That Does HD Video?
(PeteCresswell) wrote:
Per Paul: (huge amount of useful info clipped) That one made it to my "Keepers" file. Thanks for the detailed and helpful response. As anybody reading my OP may have already surmised, I'm not encumbered with a great deal of knowledge about this stuff. Having said that, I suspect that what I'm looking for is rendering of OTA broadcasts in what the TV program guide calls "HD" or "MPEG2-PS 720P@60 fps". fps renders ok. Accordingly, what I did was copy a known "HD" program to a memory stick. So when I go shopping, I'll just plug the memory stick into the candidate PC and see how well Windows Media Player deals with it. That sb a valid test, right? Is Windows Media Player what normally plays the content ? Or does SageTV do it with some of its own code ? I'm not really that strong on all the details of movie playback, mainly as I'm not a movie person myself, and haven't had to delve into solving any problems there. On the one hand, there is the capability in Windows, to find a rendering path using CODECs that have been installed in the system. That might be what Windows Media Player does, when it is given content. GraphEdit is a program that allows assembling a chain of components manually. A way of checking that, is with GSpot. I believe GSpot asks the system to graft together a chain of filters and CODECs to render a movie to screen. If you haven't installed any CODEC packs, then the CODECs would be whatever came with Windows. When I start this right now, it reports "186 CODECs loaded", but I can't tell you whether all those came with WinXP SP3 or not. I haven't been attempting to add to them. I may have added one, in an attempt to be able to play MythTV content as an experiment. http://gspot.headbands.com/ (V2.70a) That should be able to tell you something about the movie type you hold in your hand, and based on the name of that standard, perhaps you can determine whether it is one of the accelerated formats or not. It says here it is "standard MPEG2". http://en.wikipedia.org/wiki/Sagetv And here it says: http://jimstips.com/category/sagetv-tips "I don’t know what possessed me, but I went into SageTV’s setup screens and began playing with all of the "video renderer" and "video decoder" combinations. After some trial-and-error, I found that choosing the "VMR9" renderer and the "InterVideo" decoder produced excellent, stutter-free video on both HD and SD recordings." That could be from something like InterVideo WinDVD ? And this gives a demo of the setting up of "graphs" for rendering movies to the screen. I got here while looking for VMR9. http://en.wikipedia.org/wiki/DirectShow And MPEG-2 appears in this article. http://en.wikipedia.org/wiki/Dvd So maybe a DVD player application, could play that content. http://en.wikipedia.org/wiki/Mpeg2 "Decoders are subject to a royalty of $2.50 per unit" I have a copy of Cyberlink PowerDVD on a CD that came with an optical burner. I just installed that in VirtualPC (so it won't pollute the main OS). I copied over what might be close to your TS file to that, and it played in a window. It used 99% CPU (there is only one core being used in VPC 2007 for some reason). It wasn't even playing back with a large window size. It didn't play in Windows Media Player. I don't know if that is licensing related or just my lack of keeping WMP up to date. Once Cyberlink PowerDVD was installed, now GSpot in that virtual environment, is reporting it is using Cyberlink CODECs on the sample file. GSpot wouldn't touch it in my host OS (WinXP) with no Cyberlink software installed. I thought applications like PowerDVD and WinDVD are the kinds of things that may have the capability to use an Nvidia GPU and its VP3 video decoder. I don't know if WMP can tap into that or not. Before I installed PowerDVD, the version of WMP on that VirtualPC, wouldn't play the test movie. After PowerDVD was installed, then when I tested WMP, it was able to play the movie. So it looks like the Cyberlink PowerDVD installer and whatever CODECs it installed, are now being used by GSPot and WMP. It suggests if you walk to a local store, with movie in hand, there is no guarantee the candidate netbook will have the CODECs. The copy of WMP on the machine might not touch it. I don't know if a more modern OS like Win7, would come better prepared for this test or not (i.e. a $2.50 decoder?). The test movie I used, is "HD sample clip (250MB - 1:42)" here. You can compare what GSpot says about your SageTV clip, versus that sample. http://www.nextcomwireless.com/R5000/samples.htm While VLC player and FFMPEG may seem like a free way to do a test, the problem would be that FFMPEG likely doesn't use the Nvidia hardware. So if you test that way, you're likely using CPU for that. Paul |
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BlueSky: 901-Type That Does HD Video?
"Paul" wrote in message ... (PeteCresswell) wrote: Per Paul: (huge amount of useful info clipped) That one made it to my "Keepers" file. Thanks for the detailed and helpful response. As anybody reading my OP may have already surmised, I'm not encumbered with a great deal of knowledge about this stuff. Having said that, I suspect that what I'm looking for is rendering of OTA broadcasts in what the TV program guide calls "HD" or "MPEG2-PS 720P@60 fps". fps renders ok. Accordingly, what I did was copy a known "HD" program to a memory stick. So when I go shopping, I'll just plug the memory stick into the candidate PC and see how well Windows Media Player deals with it. That sb a valid test, right? Is Windows Media Player what normally plays the content ? Or does SageTV do it with some of its own code ? I'm not really that strong on all the details of movie playback, mainly as I'm not a movie person myself, and haven't had to delve into solving any problems there. On the one hand, there is the capability in Windows, to find a rendering path using CODECs that have been installed in the system. That might be what Windows Media Player does, when it is given content. GraphEdit is a program that allows assembling a chain of components manually. A way of checking that, is with GSpot. I believe GSpot asks the system to graft together a chain of filters and CODECs to render a movie to screen. If you haven't installed any CODEC packs, then the CODECs would be whatever came with Windows. When I start this right now, it reports "186 CODECs loaded", but I can't tell you whether all those came with WinXP SP3 or not. I haven't been attempting to add to them. I may have added one, in an attempt to be able to play MythTV content as an experiment. http://gspot.headbands.com/ (V2.70a) That should be able to tell you something about the movie type you hold in your hand, and based on the name of that standard, perhaps you can determine whether it is one of the accelerated formats or not. It says here it is "standard MPEG2". http://en.wikipedia.org/wiki/Sagetv And here it says: http://jimstips.com/category/sagetv-tips "I don’t know what possessed me, but I went into SageTV’s setup screens and began playing with all of the "video renderer" and "video decoder" combinations. After some trial-and-error, I found that choosing the "VMR9" renderer and the "InterVideo" decoder produced excellent, stutter-free video on both HD and SD recordings." That could be from something like InterVideo WinDVD ? And this gives a demo of the setting up of "graphs" for rendering movies to the screen. I got here while looking for VMR9. http://en.wikipedia.org/wiki/DirectShow And MPEG-2 appears in this article. http://en.wikipedia.org/wiki/Dvd So maybe a DVD player application, could play that content. http://en.wikipedia.org/wiki/Mpeg2 "Decoders are subject to a royalty of $2.50 per unit" I have a copy of Cyberlink PowerDVD on a CD that came with an optical burner. I just installed that in VirtualPC (so it won't pollute the main OS). I copied over what might be close to your TS file to that, and it played in a window. It used 99% CPU (there is only one core being used in VPC 2007 for some reason). It wasn't even playing back with a large window size. It didn't play in Windows Media Player. I don't know if that is licensing related or just my lack of keeping WMP up to date. Once Cyberlink PowerDVD was installed, now GSpot in that virtual environment, is reporting it is using Cyberlink CODECs on the sample file. GSpot wouldn't touch it in my host OS (WinXP) with no Cyberlink software installed. I thought applications like PowerDVD and WinDVD are the kinds of things that may have the capability to use an Nvidia GPU and its VP3 video decoder. I don't know if WMP can tap into that or not. Before I installed PowerDVD, the version of WMP on that VirtualPC, wouldn't play the test movie. After PowerDVD was installed, then when I tested WMP, it was able to play the movie. So it looks like the Cyberlink PowerDVD installer and whatever CODECs it installed, are now being used by GSPot and WMP. It suggests if you walk to a local store, with movie in hand, there is no guarantee the candidate netbook will have the CODECs. The copy of WMP on the machine might not touch it. I don't know if a more modern OS like Win7, would come better prepared for this test or not (i.e. a $2.50 decoder?). The test movie I used, is "HD sample clip (250MB - 1:42)" here. You can compare what GSpot says about your SageTV clip, versus that sample. http://www.nextcomwireless.com/R5000/samples.htm While VLC player and FFMPEG may seem like a free way to do a test, the problem would be that FFMPEG likely doesn't use the Nvidia hardware. So if you test that way, you're likely using CPU for that. Paul Elecard has a sale on for their MPEG Player v 5.6, you might download their 30 day trial . http://www.elecard.com/products/prod...r/mpeg-player/ It makes good use of a number of the hardware accelerations available. ( The Elecard DirectShow Codec and filters are nice to have on your system, as well. I can't be sure installing this player makes them available, but I have them from several other of their products.) Luck; Ken |
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