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DVD for RISC OS? |
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(00:24 23/10/2000) alib (08:27 28/10/2000) Steve (23:57 28/10/2000) rich (13:58 15/6/2002) Gulli (13:58 15/6/2002) rich (13:58 15/6/2002) jess (13:58 15/6/2002) [mentat] (13:58 15/6/2002) ams (13:58 15/6/2002) ams (13:58 15/6/2002) Gulli (22:29 26/11/2000) ams (13:58 15/6/2002) jess (21:19 27/11/2000) senduran (09:56 29/11/2000) johnstlr (13:58 15/6/2002) BonzoBanana (13:58 15/6/2002) hubersn (13:58 15/6/2002) ams (19:55 4/12/2000)
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Gulli |
Message #546, posted at 00:24, 23/10/2000 |
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I was looking at the specs for the excellent looking Omega from Microdigital and noticed that the specs included: Hardware acceleration of JPEG and MPEG decoding. Does this mean that DVD will be available on this computer? If that's the fact I think Microdigital will have addressed almost every single item that people have been wishing for in a new RISC OS computer! In hardware terms that is. The only thing I see missing from it is a network card but the PCI slots should cover that. Someone will probably contact (or already has) companies like 3Com for information about writing drivers for their cards. Personally I think 3Com would probably assist as much as possible, given their interest in Linux.Good work Microdigital! Gulli |
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alib |
Message #547, posted at 08:27, 28/10/2000, in reply to message #546 |
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Hi, Problem with DVD is that commercially mastered movies are all encrypted using special algorithms which are only made available in source code form to very trusted and very rich PC/Mac decoder software companies. Hence, there's no 'above board' DVD player for Linux and likewise, I doubt we'll see it on RISC OS for a while. However, MPEG hardware support gets us half way there but the next stage could be harder. Cheers, a |
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Steve |
Message #548, posted at 23:57, 28/10/2000, in reply to message #547 |
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I've a feeling that there does exist at least one 'official' DVD player app for Linux, but that doesn't help the RISC OS situation :-( Perhaps the film industry will see sense (yeah, right) and open up the standards... |
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Gulli |
Message #556, posted at 22:29, 26/11/2000, in reply to message #555 |
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DVD and the movie studios never cease to amaze me. The latest being that (apparently) new scripts will be added to future DVD's that will make them check if your machine can be reconfigured to multiple region settings. If the script finds it can then the DVD won't play (even if its the CORRECT region for your player). Hmm, that doesn't stop people from buying another DVD player with a different region code and it probably will not take long before someone has found a way to bypass such a script. The bad thing for the consumer and in the long run for the movie studios is that people like me who like watching alternative movies that may never be released outside the US will not be able to buy these movies without buying a second DVD player and it's hard justifying two players! Then again, why not just buy region one players and no others :-) Maybe it's time to start boycutting (sp?) DVD and go directly to DivX? That would paralise all these distribution constraints! Anyone for converting that? Maybe a hardware player can be created for DivX.
[Edited by 172 at 22:30, 26/11/2000] |
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jess |
Message #558, posted at 21:19, 27/11/2000, in reply to message #557 |
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As far as i'm aware the multiregion script only detects players that play all region disks automatically. Ones that are changed by hand as needed are not detected.
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senduran |
Message #559, posted at 09:56, 29/11/2000, in reply to message #558 |
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As far as i'm aware the multiregion script only detects players that play all region disks automatically.Ones that are changed by hand as needed are not detected. And indeed its also that case that most auto-change players can be set manually to a region on a 'temporary' basis, so bypassing the script as well. Getting back to the point that started this thread - mpeg acceleration in hardware. Isn't this just mpeg1 acceleration? I'm thinking it won't help much play back DVDs at speed. Anyone know for sure?
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ams |
Message #561, posted at 19:55, 4/12/2000, in reply to message #560 |
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An xScale or ARM10 could manage the decode without specific MPEG2 hardware (an ARM10 at 400MHz has an FP that manages some 800MFlops about the same as a 1000MHz P-III), as PC's can manage (in software alone) to decode DVD's with lower specs than either I would not anticipate any undue problems. The old SA-110 would need some help though ! |
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BonzoBanana |
Message #563, posted at 13:58, 15/6/2002, in reply to message #555 |
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DVD and the movie studios never cease to amaze me. The latest being that (apparently) new scripts will be added to future DVD's that will make them check if your machine can be reconfigured to multiple region settings. If the script finds it can then the DVD won't play (even if its the CORRECT region for your player).I need a Asparin quick It will only knock out all region players meant to be sold in the far east. People who have players who can simply switch regions indefinitely with a remote control hack won't have problems. I must admit I'm more into divx now as I hate the way europe and the uk are treated with inferior releases at inflated prices that take a damn site longer to get here. |
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johnstlr |
Message #562, posted at 13:58, 15/6/2002, in reply to message #557 |
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If I remember correctly (in short if I've got it wrong correct me please ). DivX was originally pushed as a means of "rental" DVD distribution. The concept was you'd buy a DivX disk and then have a restricted number of "plays", to get more you'd "top up" (by paying on-line). Yes it was and apparently it has completely bombed in the US as people go "what do you mean I have to pay more to watch it AFTER I've already paid for it?"
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hubersn |
Message #560, posted at 13:58, 15/6/2002, in reply to message #546 |
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During Hobby+Elektronik in Stuttgart I bought two SCSI DVD-ROMs and tried them out with the DVD "True Lies" (Arnie movie, you know ;-)). there were quite some astonishing facts to be noticed: - The DVD was readable without problems with CDFS - Porting DeCSS was no problem (thanks to a "visitor" ;-)) - The DVD was *not* encrypted at all, and hence DeCSS did not find any keys ;-) - The new version of MPEG2 by Peter Teichmann was (partly) able to play back parts of the video stuff (very slow and incomplete of course, on a Risc PC with SA/200)Conclusions? It does not seem to be hard to cater for DVD playback up to the point of actually decoding the sound and playing the video. I guess the Linux tools could be ported quickly, and access of the DVD-ROM is no problem at all (given some SCSI/ATAPI expertise). We would need a vastly improved hardware (e.g. the Omega or a good AGP card for ViewFinder which does most of the MPEG2 stuff "automatically" and following that some better software. It *is* possible. If I have time, I will look into it (up to the MPEG decoding stuff - that's foreign territory I'm afraid). BTW, DVD decoding is not illegal in Germany at all, so all you have to wait for is a German guy coding the software ;-) Steffen
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ams |
Message #557, posted at 13:58, 15/6/2002, in reply to message #556 |
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If I remember correctly (in short if I've got it wrong correct me please ). DivX was originally pushed as a means of "rental" DVD distribution. The concept was you'd buy a DivX disk and then have a restricted number of "plays", to get more you'd "top up" (by paying on-line). The problem with opting for Region 1 only is that if you want to view a film once you can't (you have to buy - as you can't rent region 1 disks). That's why I opted for R2, at least you can rent some disks and buy the ones you really lust after. I suppose (real world time guys) some cleaver sod will come up with a patch that hides multiregion on your player so that it can be enabled but not by a script on the DVD (and so the DVD will play as it will be fooled into believing that your DVD is a single region deck).
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ams |
Message #555, posted at 13:58, 15/6/2002, in reply to message #552 |
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DVD and the movie studios never cease to amaze me. The latest being that (apparently) new scripts will be added to future DVD's that will make them check if your machine can be reconfigured to multiple region settings. If the script finds it can then the DVD won't play (even if its the CORRECT region for your player). I need a Asparin quick
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ams |
Message #554, posted at 13:58, 15/6/2002, in reply to message #552 |
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What would be nice would be a DVD\CSS filing system, using something like DeCSS. So you could see the plain mpeg files, then an mpeg 2 player could play them. Maybe a bit of scandal would raise RISCOS awareness. It is possible to license DVD/CSS (it is subject to non-disclosure terms but is available for a cool $5000). So perhaps someone with deep pockets will by a license and do a "legit" version for RiscOS, ARM10's/xScale and possibly ARM9's may be up to doing a good software decode. The way CSS normally is implemented is such that unencrypted files are never viewable without the licensed software (or hardware) and attempts to copy CSS encrypted files in an unencrypted form is prohibited (I imagine if a legit DVD software player appeared on RiscOS I doubt if the movie moguls would relent and allow it to behave like a normal ROS filing system - a pity really !) |
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I don't have tourettes you're just a cun |
Message #553, posted by [mentat] at 13:58, 15/6/2002, in reply to message #552 |
Fear is the mind-killer
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A scandal was something I suggested in another thread a while back. Right now any publicity would be good publicity... (unless of course it was "RiscPC blows up and destroys school..." !) |
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jess |
Message #552, posted at 13:58, 15/6/2002, in reply to message #551 |
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What would be nice would be a DVD\CSS filing system, using something like DeCSS. So you could see the plain mpeg files, then an mpeg 2 player could play them. Maybe a bit of scandal would raise RISCOS awareness. |
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rich |
Message #551, posted at 13:58, 15/6/2002, in reply to message #550 |
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Code for decoding DVDs? Do a search on DeCSS. You might not be able get it as straight code, but you might still be able to get it as a T-shirt or MP3 folksong See http://www.2600.com/ if you don't know what I'm talking about. |
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Gulli |
Message #550, posted at 13:58, 15/6/2002, in reply to message #549 |
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Perhaps someone has the code required to write a player? Since the RISC OS market is so small that no one knows anything about it, let alone gives a damn, we probably could have a commercial or shareware player that no one would ever hear of and therefore not have to worry about an international scandal like the Linux folks.
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rich |
Message #549, posted at 13:58, 15/6/2002, in reply to message #548 |
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There wasn't an official Linux DVD player when the whole scandle broke; someone announced one right after the arrest, but that could have been just cashing in on the publicity; IIRC they did a PC DVD player and, some time later, there still wasn't a Linux one listed on their website. So, if there is one, it was a long time coming and took an international scandal before it appeared |
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