Indeed.Originally Posted by Sprung
So yeah, small documents, like maybe, text files and such, don't really need to be compressed. And even if you choose to do so, don't expect drastic compression. Videos and music need to be compressed in different ways, not through the traditional compression program for normal data.
Elite
wait a minute.... whats the point in compression??
its not good for video, audio, pictures, text,....... what is it good for?
What?Compression is good sometimes for video files. And also for images. Ask polobunny. He'll tell ya!
Elite
oh ok.... so its good sometimes, but dont expect a high compression ratio?What?
Jackass Penguin
Sometimes it almost unbelieveable. Ikaruga for the Dreamcast is 700MB, but compresses to 18MB. Some Gamecube games go from 1.4GB to a couple hundred MB.
There are different forms and uses for compression. Using a codec like Xvid will successfully compress a movie file. As far as much goes, I'm not entirely sure. I always just use the .mp3 format with the standard bitrate for it. As for images, I believe polo said before that .png is a good format for image compression. Now, if you want to compress simple data, like say, a program, or a game, etc, then you use something like WinRar.
Not all jokes are funny.
usually i see programs or iso's in an archive or text nm else.
The Demon who makes Trophies of Men
Teh Big Banana
WinRar, 7-Zip and Zip programs do a good job of compressing any file that has not already been compressed.
These include roms & ISOs, text files, web pages, and raw (uncompressed) image & media files, like .wav files.
But it depends on what settings you use.
For max compression with WinRar you need to Options > Settings > Compression tab > Create Default > Advanced tab > Compression > and set the Dictionary size to 4096.
Then under the General Tab, under Compression Method, choose Best.
And if you're trying to rar alot of files into a single archive, selecting "Create Solid Archive" will also shrink the rar by a few extra MB (could be more than a few in some cases)
Creating a Solid Archive can also save a little space when raring large files (that are not already comp[ressed) like ISO's.
But it takes longer to both create and extract a Solid rar archive than it does with a regular rar one.
And if a solid rar file becomes corrupt, you will not be able to extract any data from inside the rar file, including any data that's located past the part of the rar file that's corrupt.
With a regular rar file, only the files located at the point of corruption are affected; everything else inside the rar can be extracted.
Of course, you could add a recovery record, so that if your solid rar file becomes corrupted, you might be able to repair it, but your less likely to successfully repair a solid rar archive than a regular one.
And adding a recovery record also adds extra MB to the rar file, which kind of defeats the purpose of making solid archives.
Cookie Thief
thats because dummy data compresses like a champ
.
That'll be because it contains about 20-25MB of game data, and a 600 odd MB dummy file. Dummy files compress right down, as I'm sure you'll know. It's all about how much crap there is on the disc image.
Damn I was beaten to it by Rydia.
Cookie Thief
Yeah, Animal crossing goes from 1.4Gigs to 15MB.
Jackass Penguin
Yes, and since this thread is all about compressability, I figured I'd add that.That'll be because it contains about 20-25MB of game data, and a 600 odd MB dummy file. Dummy files compress right down, as I'm sure you'll know. It's all about how much crap there is on the disc image.
Damn I was beaten to it by Rydia.
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