PNG (portable network graphics) is a popular image format that supports 32-bit colors and transparency.
3
votes
1answer
22 views
ImageMagick Convert: How to produce sharp resized PNG files from SVG files?
I am using this command to generate a sharp 512px wide version of an SVG file that I have:
convert -geometry 256 pinterest.svg pinterest.png
This is the source file:
<?xml version="1.0" ...
2
votes
1answer
70 views
Converting RGB images into lossless video with avconv / ffmpeg
I am trying to convert a series of PNG24 images containing a screen animation to a lossless video, so that every pixel is reproduced exactly as it was in the original. But avconv (and ffmpeg) both ...
0
votes
1answer
29 views
Batch image replace 2 colors
I know there is already such question but it didn't helped me. I have a lot of image files, where I want to change purple RGB(255, 0, 255) to transparent (it is png). Is there any app which could do ...
0
votes
1answer
93 views
How do I merge a folder of PNG images to a mp4 movie using avconv?
I have a folder containing many time stamped PNG images which I'd like to merge to a short movie. The contents of that directory looks like this:
└── images
├── img_20130421_115547.png
├── ...
472
votes
4answers
60k views
Why does this PNG image display differently in Chrome & Firefox than in Safari and IE?
Check this image out:
On Chrome and Firefox it will show as a pear. Now, try to save it and look at it saved on your desktop. Also, try viewing in safari or IE. It will display as an apple!
Try ...
-2
votes
2answers
127 views
PNG file size is too big after converting from JPG
I try to convert a JPG file to PNG, but the size is still too big, about 7 MB. What's wrong?
I used Microsoft Paint to convert it.
The original file is only 500 KB in JPEG, yet the PNG file is 7 MB.
...
0
votes
2answers
95 views
How to convert GIF files to PNG or JPEG in OS X with command line?
I have 10k+ GIF files that I need to convert to PNG or JPEG preferably using command line so that I can automate it. I'm not worried about losing quality or transparency, just need to prepare files ...
3
votes
1answer
144 views
Create a .png with zopfli
I wanted to give zopfli a try since I have some static .png's that I am using on a website.
I see how I can create .gz and .deflate-files. But how can I create a png that can be displayed in FF, ...
2
votes
1answer
56 views
How do I Covert (.gif to .png) This Image to Get the Original View?
I am trying to convert this image, http://en.wikipedia.org/wiki/File:Dijkstra_Animation.gif, to a series of .png files.
This was pretty simple, I used the convert command in Linux,
convert ...
0
votes
0answers
16 views
Filename issues
Server is ubuntu 10.04 with apache installed. I have a file named picture.png and a file named picture.jpg. If I enter in the address bar www.mysite.com/picture, the png show up, but if I enter ...
1
vote
1answer
133 views
Why shell commands for PNG file in Windows 8 doesn't work?
I have exactly same task like here:
Windows 7 - Add shell command for .png file
But this solution doesn't work in Windows 8 for unknown reason only for PNG files. And I don't know why.
I tried some ...
1
vote
1answer
32 views
Postscript to png conversion loss
When converting Postscript files to PNG, is there any loss of fidelity in the converted files? The postscript files are scanned at 1200DPI.
If there is such loss, how can it be kept minimum? I'm ...
3
votes
1answer
729 views
How can I convert a series of PNG images to a video for YouTube?
I have a sequence of PNGs (here is one specimen) which I turn into a video with ffmpeg:
ffmpeg -r 10 -i image%03d.png -s 1380x720 -c:v libx264 -qscale 10 -r 30
basf_merck_libx264.mp4
With ...
1
vote
1answer
94 views
Why are colors changed in the preview for my clip on YouTube?
I have 1000 PNGs created with R and ggplot2. This is one for example: image000.png
Now I use ffmpeg to glue them together into a clip:
ffmpeg -r 10 -i image%03d.png -s 1380x720 -vcodec png
...
0
votes
0answers
54 views
How to re-position the SWF while using swfrender in SWFTools?
Well, my current SWF, loads an external SWF from a URL, and re-positions it. This is because the SWF from the actual URL is not centered. However, when I use swfrender, to render it, it renders it ...
0
votes
1answer
96 views
convert serveral image files to a single djvu file
Suppose I have serveral BMP image file, say 001.bmp, 002.bmp,..., 100.bmp.
I want to convert these files to a single djvu file, whose first page is the content of 001.bmp, the second page is the ...
2
votes
2answers
164 views
“Bake” an SVG image into a PNG at a given resolution?
I'm on Linux and I'd like to take an SVG file and bake it into a PNG file at a given resolution (scaling). Is there a way to do this quickly and effectively from the command line?
I'm looking for ...
4
votes
1answer
460 views
Convert png sequence to x264 with ffmpeg
I am trying to convert a series of pngs into an mp4 video. I am using ffmpeg, and want to encode the video with the H.264 codec. Using the command
ffmpeg -y -r 30 -b 1800k -i _tmp%04d.png -vcodec ...
3
votes
1answer
258 views
Building ImageMagick on OSX Lion and can't link libpng
I am trying to build ImageMagick 6.8.0-5 on OSX Lion with support for libpng. I am just using the standard ./configure make make install procedure.
I succeed in compiling when I do not reference ...
1
vote
1answer
65 views
Most space-efficient format for image with large dimensions but few colors?
Recently I have had to scale up the dimensions of a gif image by a factor of 2, this resulted in an increase of the file size by about 8 times. While this is not a complete surprise, I can't help but ...
0
votes
2answers
58 views
Identify specific PNG format
How can I tell, ideally with an Imagemagick identify command, whether a particular PNG is PNG32, PNG24 or PNG8?
The %z or %[depth] gives the sample depth (not the pixel depth), which is always 8 or ...
4
votes
2answers
274 views
Automating the choice between JPEG and PNG with a script
Choosing the right format to save your images in is crucial for preserving image quality and reducing artifacts. Different formats follow different compression methods and come with their own set of ...
1
vote
0answers
220 views
.MOV video compressed with PNG has no alpha channel
I have a QuickTime file .mov with alpha channel compressed with PNG codec. What I need is to create smaller version of this file using ffmpeg. Everything works except new mov has no alpha (Adobe After ...
0
votes
1answer
79 views
How can I add metadata to PNG images on OS X/Linux?
Is there a program for OS X and Linux that I can use to add Textual information to PNG image files? Something for Windows also, maybe?
1
vote
1answer
184 views
Batch convert svg to ico, specifying size?
In Windows, I have a GNOME icon theme in the svg format; several svg files residing within subfolders. Is there a way, on the command line, to convert these to ico files with the same name in the same ...
0
votes
1answer
99 views
I need to convert a bunch of *pngs to *.mpg in linux/CENTOS. How can I do this?
Title says it all, and I am not too familiar with LINUX, but I can get by if I get some help.
I am looking for a way(s) where I can do the above, or in lieu of that, download a program that will do ...
0
votes
1answer
110 views
PNG works on iPhone but not through computer
I downloaded an app from Cydia called "Conway's Game of Life" to both my iPhone and my computer. On the iPhone it renders correctly, but on the computer some of the PNG files of the Cydia .deb ...
1
vote
2answers
112 views
Corrupt PNG files after unzipping
I downloaded 7-zip for Windows to extract .png files from .deb archives, but they turn out corrupted, showing a black background instead. Is there an alternative, working program for unzipping .deb ...
1
vote
2answers
263 views
Imagemagick convert making strange gif
I am trying to make a GIF from a set of PNGs (files like f0010.png).
convert *0.png out.gif
The GIF is coming out strange -- not looking like the PNGs, cutoff, stuff missing, etc. I tried also ...
0
votes
0answers
102 views
Cannot export to PNG format from Corel in Windows 7
I have been using Corel X4 and Windows 7 for a long time. Without notice, I am unable to export from Corel draw to .PNG format - especially when I use the transparency option. I get this message: An ...
0
votes
1answer
103 views
ming 0.4.2 compilation errors on Ubuntu 12.04 when installing from source code
I am trying to install ming 0.4.2 from source code and it was compilable before on Ubuntu 10.04, but now it' giving following compilation errors when I try to install using command sudo make install ...
1
vote
0answers
146 views
Render Video as png with Alpha
I have pixel art that I want to put in an animated png. I animated it in the timeline, but when I rendered it into a series of pngs, It has no partial transparency. Anyone know how to solve this?
3
votes
3answers
990 views
Convert image to uncompressed PNG from the command-line
I have a compressed PNG image compressed.png. I can convert it to an uncompressed PNG decompressed.png using GIMP (saving as PNG and setting compression level to 0). How can this be done on the ...
2
votes
1answer
192 views
PNG displays differently in Firefox
Currently I'm working on a website with some bright colors. I'm trying to implement a seamless overlay on top of a few images, to give the sensation that the background is flowing over the image, ...
2
votes
2answers
192 views
PNGs with Black Backgrounds
Why is it that when I copy/paste PNG files with a transparent background into photoshop that they show up with a black background, whereas if I save them, then open they're transparent?
I find it ...
2
votes
5answers
5k views
How to reduce PNG file size for web?
I have a PNG-24 file with transparent background and its current size is 1.5 MB. How to reduce size or use PNG-8 file format and keep same quality ?
PNG file fro here:
...
2
votes
1answer
1k views
PNG alpha rendered as black in Blender
I'm a Blender novice, so this is probably easy to fix.
When I use a transparent PNG as a texture in Blender, the parts that should be transparent are rendered as black.
This is especially confusing ...
3
votes
2answers
96 views
How can I convert a PNG to a vectorized image?
This is the best I've found so far: http://www.tlhiv.org/rast2vec/
It works otherwise ok except that it does not support PNG transparency (it's simply gone in the resulting vector).
0
votes
1answer
708 views
How can I create a 24bit PNG with alpha and no transparency in Fireworks CS3?
We're creating icons for a mobile app and the developers have asked for very specific files. One needs to be 48px x 48 px and has to be a 24 bit PNG with alpha and no transparency. I'm using ...
0
votes
1answer
820 views
ffmpeg and png watermark issue
I tried to create a watermark (using a png image) on a video like this:
ffmpeg -i test.wmv -b:a 300k -ar 22050 -t 10 -f flv -s 352x288 -vf "movie = watermark_logo352.png [watermark]; [in][watermark] ...
0
votes
1answer
59 views
Local Apache won't send PNGs correctly
Can't figure this out: Yesterday my local Apache config was sending PNGs just fine, today the browser is trying to decode them as JPGs and thus, only showing a "missing image" error despite returning ...
3
votes
2answers
238 views
Windows 7 doesn't show image size for all images
On Windows 7's new file layout in Explorer. Some PNGs will show the size whereas others won't. I've tried rebooting and clearing the cache, but it doesn't work. Also, all of these images were saved ...
1
vote
0answers
444 views
Set .png default compression in Photoshop CS6
Is there a possibility to set .png default compression options to "NONE / fast"?
Whenever I try to save as .png, the default option is set to "smallest / slow".
2
votes
1answer
501 views
multiple png images over a single pipe to ffmpeg (no file writes to disk!)
I have a program that generates a script for gnuplot, which in turn generates a lot of png images and send it to stdout. I want to pipe these images to ffmpeg without writing them to the disk. This is ...
0
votes
1answer
522 views
Saving image as PNG-24 in IrfanView
Is it possible to save an image as PNG-24 in IrfanView?
I am asking this because the edges around circular lines get disturbed when saving the image as transparent. I heard that this might be due to ...
1
vote
0answers
68 views
A photoshop png file all the same size generating dilemma
I have a photoshop file with layered componpents that I am animating. I need to save each layer of each element as a png file with the same dimensions (so if a box moves, 3 layers of the psd file have ...
0
votes
0answers
302 views
Mac Cursor PNGs
So I found a collection of PNGs for authentic Windows cursors. Does anybody know where I can find the same for OSX? The only one I've found so far is the following standard black cursor:
0
votes
2answers
835 views
Best way to export powerpoint slides into pngs with different resoltuions?
I am trying to convert powerpoint slides into a png. I know that there are several ways that allow to do this by allowing for changing the resolution (e.g., within powerpoint by changing the registry, ...
3
votes
1answer
10k views
IE8 wont display .PNG images
I really don't know how the user managed to do this but for some reason .PNG images are no longer working in IE8.
When viewing a page that has .PNG images on it they are just displayed as a little ...
0
votes
2answers
717 views
lossless PNG to video in Imagemagick
As an intermediate step in creating an animation, I need to put a bunch of sequential PNGs into a movie file. I tried ffmpeg but was getting compression and artifacting even when I set quality to ...
