| --- Log opened Thu Jun 12 00:00:18 2008 |
| 00:34 | | McMartin [~mcmartin@Nightstar-7615.dsl.pltn13.sbcglobal.net] has joined #code |
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| 01:34 | < Raif> | Ok, seriously, I've been hooking up all our computers to the media center server and testing by just playing on random. |
| 01:35 | < Raif> | On every single device, with a playlist of about 1700 tracks, the same Freezepop track has come up 3 times. |
| 01:36 | < Raif> | (rather, between all the devices) |
| 01:36 | < Raif> | So I can't blame this on a bad RNG. |
| 01:36 | | ToxicFrog|Adventures [~ToxicFrog@Admin.Nightstar.Net] has quit [Operation timed out] |
| 01:37 | <@Shoukanjuu> | why not? |
| 01:37 | <@Shoukanjuu> | It's entirely possible that you would get the same track 3 times, even three i na row |
| 01:41 | < Raif> | Different devices with different software (and operating systems) |
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| 01:42 | < Raif> | So the probability this would happen is something like 1700^-2 |
| 01:44 | <@Shoukanjuu> | it may be horrendously improbable |
| 01:44 | <@Shoukanjuu> | but it's still possible |
| 01:45 | < Raif> | Indeed... |
| 01:46 | <@Shoukanjuu> | Maybe your computers are devolping intelligence enough to prefer a certain song |
| 01:46 | <@Shoukanjuu> | If which case |
| 01:46 | <@Shoukanjuu> | It was nice knowing you |
| 01:46 | < Raif> | Was it really? |
| 01:46 | <@Shoukanjuu> | Well, it wasn't bad :P |
| 01:48 | < Raif> | That's the nicest thing anybody's said to me all week. |
| 01:48 | <@Shoukanjuu> | Don't let others get to ya |
| 01:49 | < Raif> | Well, besides "I want to be your sex slave," but I try not to talk about your mom in polite company. |
| 01:49 | <@Shoukanjuu> | Nice. Hope you like your STDs :P |
| 01:49 | < Raif> | I particularly like the feel of lesions. |
| 01:50 | <@Shoukanjuu> | Hahaha |
| 01:51 | < Raif> | Entering your mom is like coming home to a long-forgotten mansion. Plenty of space, and everything's dry and covered in dust. |
| 01:52 | <@Shoukanjuu> | XD |
| 01:53 | <@Shoukanjuu> | Okay, so apparently it's easier to...decompress than it is to...compress |
| 01:56 | < Raif> | Eh? |
| 01:59 | <@Vornicus> | That's pretty common. |
| 02:00 | <@Vornicus> | Compression is a lot of hard math; decompression is just "follow hte instructions" |
| 02:01 | <@Shoukanjuu> | I didn't think it was as easy as "following the directions backwards" |
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| 02:31 | < Raif> | Depends on the compression algorithm, but yeah. |
| 02:32 | <@Shoukanjuu> | but it IS possible? |
| 02:33 | < Raif> | What, compression being as easy as decompression? Yeah. |
| 02:33 | <@Shoukanjuu> | No tas easy |
| 02:33 | <@Shoukanjuu> | Just |
| 02:35 | <@Shoukanjuu> | able to recompress |
| 02:35 | <@Shoukanjuu> | if I had the algorithms to decompress, I'm sure it is possible to recompress |
| 02:36 | < Raif> | Of course it is. It might not be possible to recompress losslessly, however. |
| 02:36 | < Raif> | (Or at least not necessarily easy) |
| 02:39 | <@Shoukanjuu> | It needs to be possible to decompress, edit, and compress again, to the same size |
| 02:44 | <@Reiver> | "Same size" is inherently difficult if you've changed the data in question. |
| 02:45 | <@Reiver> | I mean, if you add in extra data, it'll end up bigger. |
| 02:45 | <@Shoukanjuu> | Oh, I won't add |
| 02:45 | <@Shoukanjuu> | I'll be switching a byte for another |
| 02:45 | <@Shoukanjuu> | 0x32 to 0x00, for instance |
| 02:46 | <@Reiver> | That will still likely change the compression amount, if only slightly. |
| 02:47 | <@Shoukanjuu> | :/ |
| 02:47 | <@Shoukanjuu> | Then I guess just hexediting a cocmpressed file is the better idea |
| 02:51 | <@Reiver> | Um. |
| 02:52 | <@Reiver> | That will likely -break- a compressed file. |
| 02:52 | <@Reiver> | Compressed files tend to rely on the data earlier in the stream to determine what comes next, you see. |
| 02:52 | <@Reiver> | If you change that, you change what the rest of it thinks it's saying. |
| 02:53 | <@Shoukanjuu> | yes |
| 02:53 | <@Shoukanjuu> | but I HAVE edited a compressed file |
| 02:53 | <@Shoukanjuu> | and it DID work how I want to |
| 02:54 | <@Shoukanjuu> | It IS possible to break it if you do it wrong |
| 02:54 | <@Reiver> | Very easy indeed. |
| 02:54 | <@Shoukanjuu> | I mean I just did, earlier |
| 02:55 | <@Reiver> | (Indeed, strictly speaking, if you're able to change data inside the compression alograthm without changing the meaning of everything else in it, you've technically got an inferior compression alog.) |
| 02:56 | <@Shoukanjuu> | Well it doesn't really need to be that good |
| 02:56 | <@Shoukanjuu> | It's from a wii iso |
| 02:56 | <@Shoukanjuu> | growth rates, and such |
| 02:57 | <@Reiver> | Aha. |
| 02:57 | <@Reiver> | I didn't even know that ISOs were, strictly speaking, actually /compressed/. |
| 02:57 | <@Shoukanjuu> | The data inside have a bit of compression |
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| --- Log closed Fri Jun 13 00:00:25 2008 |