http://en.wikipedia.org/wiki/JPEG

Don't know how helpful that would be to anyone but a computer science
major. All sorts of formulas. Something on there could give you some
things to look for in the jpg files when you are editing though.

Ian



On Sat, Jan 17, 2009 at 12:25 PM, thisoneisforstuff
<thisoneisforstuff@...> wrote:
> i will try pico and let you know how that works out. i just figured
> out that textedit _will_ work for the "wordpad glitches" but you have
> to manually change the format to rich text, it will not do it
> automatically. i was just opening it in textedit and then saving it,
> so that's why it wasn't working. i'm glad i got to try that method
> but i'm much more interested in the hex editing.
>
> i noticed pretty quickly that the beginning of the files didn't like
> to be messed with. i started using raw formats with ps that don't
> have headers so that's one way around that, but since they can only be
> used with ps it's kind of lame.
>
> do you think that there is any sort of jpeg manual or anything like
> that where we can learn how they are made, etc.? i want to get this
> shit down to a science.
>
> --- In databenders@yahoogroups.com, Jake Elliott <jake@...> wrote:
>>
>> hi stuff!
>>
>> it is mostly trial and error but here are some tips:
>> - on osx, try using pico in the terminal to edit the images
>> - avoid edits to the very top of the file as can break the image
>> header and prevent the image from displaying
>> - try cutting a large chunk of the file from the middle to the end and
>> vice versa
>> - compressed formats like jpg are less predictable and therefore more
>> fun
>>
>> rock,
>> jake
>>
>> On Jan 16, 2009, at 10:03 PM, "thisoneisforstuff"
> <thisoneisforstuff@...
>> > wrote:
>>
>> > i have been mucking around with this databending stuff all day, trying
>> > to glitch up different image formats: jpeg, raw, bmp, tif. the most
>> > i ever glitch them is like a few lines. i am on osx, so i can't just
>> > open up wordpad to make glitches (at least i don't think i can). i
>> > have been using a hex editor, and i'm just wondering if there is a
>> > science to this or if there are any tips out there, or if it is all
>> > just trial and error with no real methodology?
>> >
>> >
>>
>>
>> [Non-text portions of this message have been removed]
>>
>
>