×

Discussion Board

Results 1 to 6 of 6
  1. #1
    Registered User
    Join Date
    Jun 2008
    Posts
    28

    no image saving as "gif"

    why?thanks

  2. #2
    Super Contributor
    Join Date
    Mar 2003
    Location
    Espoo, Finland
    Posts
    976

    Re: no image saving as "gif"

    Quote Originally Posted by yyn View Post
    why?thanks
    Unisys owns licenses for LZW data compression, which is used by GIF. Any company doing commercial software, which creates GIF graphics, has to pay license fees to Unisys. Most companies are not willing to do so, thus GIF will slowly die.

    For this reason for example PNG was created as a royalty free replacement. It's also better, in some ways.

    Cheers,

    --jouni

  3. #3
    Registered User
    Join Date
    Aug 2007
    Posts
    6

    Re: no image saving as "gif"

    The LZW patent expired years ago (2003-2006) though.

  4. #4
    Super Contributor
    Join Date
    Mar 2003
    Location
    Espoo, Finland
    Posts
    976

    Re: no image saving as "gif"

    Quote Originally Posted by jmunsin View Post
    The LZW patent expired years ago (2003-2006) though.
    LZW Patent Information

    Unisys Corporation holds and has patents pending on a number of improvements on the inventions claimed in the above-expired patents.
    Situation is not entirely clear, so maybe (guessing) Nokia is playing safe. Or it could be that after those patents expired, nobody just cared enough to add GIF support.

    Anyway, the only advantage that GIF has over other already available options is easy creation of animation. Otherwise this 8bit (256 colors) graphics format doesn't really offer anything, which couldn't be done with JPEG or PNG.

    Really shame that PNG didn't get any more successful,

    --jouni

  5. #5
    Registered User
    Join Date
    Jun 2008
    Posts
    28

    Unhappy Re: no image saving as "gif"

    Quote Originally Posted by JOM View Post
    LZW Patent Information



    Situation is not entirely clear, so maybe (guessing) Nokia is playing safe. Or it could be that after those patents expired, nobody just cared enough to add GIF support.

    Anyway, the only advantage that GIF has over other already available options is easy creation of animation. Otherwise this 8bit (256 colors) graphics format doesn't really offer anything, which couldn't be done with JPEG or PNG.

    Really shame that PNG didn't get any more successful,

    --jouni
    in fact,i want to know it because of the sofeware "giftool"
    Last edited by yyn; 2008-06-13 at 14:48.

  6. #6
    Registered User
    Join Date
    Jun 2008
    Posts
    28

    Unhappy Re: no image saving as "gif"

    Quote Originally Posted by JOM View Post
    LZW Patent Information



    Situation is not entirely clear, so maybe (guessing) Nokia is playing safe. Or it could be that after those patents expired, nobody just cared enough to add GIF support.

    Anyway, the only advantage that GIF has over other already available options is easy creation of animation. Otherwise this 8bit (256 colors) graphics format doesn't really offer anything, which couldn't be done with JPEG or PNG.

    Really shame that PNG didn't get any more successful,

    --jouni
    if i want to convert JPG to GIF with pys60,how to do it?

Similar Threads

  1. Opening a JPEG Image
    By ummarbhutta in forum Mobile Java Media (Graphics & Sounds)
    Replies: 8
    Last Post: 2007-02-15, 06:34
  2. how to cut some part of Image
    By mshouab in forum Mobile Java Media (Graphics & Sounds)
    Replies: 2
    Last Post: 2006-08-04, 09:05
  3. saving jpeg image on grid list
    By flicker82 in forum Symbian
    Replies: 0
    Last Post: 2005-01-21, 04:22
  4. Saving an image from the camera as JPEG
    By profoundwhispers in forum Symbian
    Replies: 1
    Last Post: 2004-10-18, 09:35
  5. Nokia Image Converter
    By davidpurdie in forum General Development Questions
    Replies: 0
    Last Post: 2004-02-18, 15:31

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •