Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>First of all, <code>JPEG</code> doesn't support transparency! But that's not the only problem.. As you move to the next frame of the <code>GIF</code> the <code>palette</code> information is lost (<a href="http://mail.python.org/pipermail/image-sig/2008-November/005273.html" rel="noreferrer">problem witn PIL?</a>) - so <code>PIL</code> is unable to correctly convert to the <code>RGBA</code> framework (Hence the first frame is okish, but all the others are screwy). So the work-around is to add the <code>palette</code> back in for every frame, (which is what you were doing in your last code example, but your trouble was that you were saving as <code>RGB</code> not <code>RGBA</code> so you had no alpha/ transparency channel. Also you were doing a few unnecessary things..). Anyhow, here are the .png's with transparency and the corrected code, hope its of some use :)</p> <p><img src="https://i.stack.imgur.com/KCD9p.png" alt="enter image description here"><img src="https://i.stack.imgur.com/SAu7p.png" alt="enter image description here"><img src="https://i.stack.imgur.com/g0Lfo.png" alt="enter image description here"><img src="https://i.stack.imgur.com/00AAc.png" alt="enter image description here"><img src="https://i.stack.imgur.com/2c17L.png" alt="enter image description here"><img src="https://i.stack.imgur.com/nutsv.png" alt="enter image description here"><img src="https://i.stack.imgur.com/d6n3T.png" alt="enter image description here"><img src="https://i.stack.imgur.com/V13hc.png" alt="enter image description here"><img src="https://i.stack.imgur.com/jWywv.png" alt="enter image description here"><img src="https://i.stack.imgur.com/4dlAK.png" alt="enter image description here"></p> <pre><code>import Image import sys def processImage(infile): try: im = Image.open(infile) except IOError: print "Cant load", infile sys.exit(1) i = 0 mypalette = im.getpalette() try: while 1: im.putpalette(mypalette) new_im = Image.new("RGBA", im.size) new_im.paste(im) new_im.save('foo'+str(i)+'.png') i += 1 im.seek(im.tell() + 1) except EOFError: pass # end of sequence processImage('gif_example.gif') </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POPIL - Convert GIF Frames to JPG
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USfraxel
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POPIL - Convert GIF Frames to JPG
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COThank you very much! I use paste with the last frame, because some gifs uses diffs for each frame!
      singulars
      1. PO
      1. USSchinken
    2. COUhm, replacing the palette like that will give incorrect results when the frames have different palettes. One example of that is the image http://www.imagemagick.org/Usage/anim_opt/bunny_bgnd.gif (I think, not sure if I'm copying & pasting the right links). The other problem I see might be related to differences between PIL versions, but I don't get the same result as yours (I get grey areas in all the frames except the first, where it should have been transparent). The same happens for a gif like http://www.imagemagick.org/Usage/anim_opt/bunny_bgnd_opttrans.gif.
      singulars
      1. PO
      1. USmmgp
    3. CO@mmgp - hmm, yep I can see that frames with different palettes could pose a problem. I agree your getting different results might be a version issue. Unfortunetly, I don't have time to look at this at the moment, if you have a fix please edit my answer, or add you own. nice one.
      singulars
      1. PO
      1. USfraxel
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload