Compression questions for you computer geeks[views:1548][posts:7]___________________________________ [Sep 14,2006 12:12pm - niccolai ""] I have a folder filled with AVIs of silent hill (I cut them into pieces). It's about a gigworth. Mark Richards is going to crop the video files for me on his mac and send them back to me. I want the folder to be able to upload and download as much as possible so I need alot of compression. What should I compress it as? after I compress a 1024 gig file with a .zip, it's still a massive 1022 megabytes, so I'm probably not going to .zip it. I have RAR, stuffit, Ace, 7zip, power archiver, and a few others |
| _______________________________________ [Sep 14,2006 12:16pm - the_reverend ""] you will gain nothing out of zipping them or raring them. or zipping and rarring. if you know how cmpression on binary files works, you don't get more that 1-3%regularly. |
| ___________________________________ [Sep 14,2006 12:21pm - niccolai ""] Well write me a perscription than Doctor Aaron, this isn't my field of knowledge at all. |
| _______________________________________ [Sep 14,2006 12:41pm - the_reverend ""] what's do you mean "crop the video files"? why don't you just do whatever it is that you are talking about?? the main way that compression algorithms work are chunking up a file into x bytes and then making a tree structure out of it. say my file is contains ABCCAAAZ in a simple zip, I would take and count them up A =4 C = 2 B = 1 Z = 1 I make a binary tree out of it. there are more A's so that is the first element 0/\1 A_/\1 _C_/\1 __B_/\1 ___Z_/\1 I make some sort of info header for that tree. and then I compress the file so ABCCAAAZ (where each letter is 0-255 ASCII value) HEX:414243434141415A binary:0100000101000010010000110100001101000001010000010100000101011010 becomes LRRLRLRLLLLLRRRL or in binary 011010100001110 HEX: 6A in my little algorithm there, I took: 0100000101000010010000110100001101000001010000010100000101011010 and translated it into <header>011010100001110 |
| _______________________________________ [Sep 14,2006 12:43pm - the_reverend ""] why doesn't this work in binary files? cause if you chunk off all the bytes, there is a wider range of bits patterns in the file. this means that the header will be huge and the tree will be huge, negating it's effectiveness. |
| ___________________________________ [Sep 14,2006 12:48pm - niccolai ""] The video is wide screen and there's a small watermark on the border between the actual video and bottom black bar. it cuts into the video just a tiny bit, so I want to actually crop out the widescreen bars of the video. I can't crop the video files with any video software I have an I'm not willing to pay a few hundred buts for something that can. I can't even find a program with a cropping feature to bootleg. Even if I did have said program, I probly wouldn't be able to load more than a 20 minute AVI. |
| _______________________________________ [Sep 14,2006 12:49pm - the_reverend ""] but mark can magically do this? weird. |
| ___________________________________ [Sep 14,2006 12:50pm - niccolai ""] the_reverend said: I compress the file so ABCCAAAZ (where each letter is 0-255 ASCII value) HEX:414243434141415A binary:0100000101000010010000110100001101000001010000010100000101011010 becomes LRRLRLRLLLLLRRRL or in binary 011010100001110 HEX: 6A in my little algorithm there, I took: 0100000101000010010000110100001101000001010000010100000101011010 and translated it into <header>011010100001110 .... :bow: You have entered the Matrix. |