Search found 6 matches

by miha
2016-11-03T02:11:49-07:00
Forum: Users
Topic: jpeg corruption
Replies: 10
Views: 12059

Re: jpeg corruption

I just had another case. There was enough RAM for sure as reported by htop. 100% quality and 99% failed. 98% worked. Must be an internal bug.
by miha
2016-10-23T13:36:38-07:00
Forum: Users
Topic: jpeg corruption
Replies: 10
Views: 12059

Re: jpeg corruption

I have 128 GB RAM. Not enough?
by miha
2016-10-23T10:23:16-07:00
Forum: Users
Topic: jpeg corruption
Replies: 10
Views: 12059

Re: jpeg corruption

It happens with GM or IM. And the file comes after the size option.
Current limits
File Area Memory Map Disk Thread Throttle Time
--------------------------------------------------------------------------------
768 270.59GB 126GiB 252GiB unlimited 48 0 unlimited
by miha
2016-10-23T09:12:31-07:00
Forum: Users
Topic: jpeg corruption
Replies: 10
Views: 12059

Re: jpeg corruption

- Image is black or one colour or totally desaturated after some initial block of correct lines, one or multiple corrupt areas possible
- for example gm convert -size 32768x24576 -quality 100% -depth 8 rgb:$1 $1_32K.jpg (can happen with smaller sizes too)
- yes
- raw bytes
- jpg
- Version ...
by miha
2016-10-23T04:00:44-07:00
Forum: Users
Topic: jpeg corruption
Replies: 10
Views: 12059

jpeg corruption

I sometimes get corrupted jpegs when converting from a lossless format and the image is large and has lots of fine detail. With quality 100% the result is corrupted. With 99% or 98% it usually is correct although some cases needed going even lower. What could be the problem for this? Internal buffer ...
by miha
2016-10-22T05:50:32-07:00
Forum: Users
Topic: colorspace (s)RGB and chromaticity primaries
Replies: 3
Views: 6934

colorspace (s)RGB and chromaticity primaries

I'm creating a png from raw RGB bytes that should be interpreted with Adobe RGB primaries (not sRGB) with something like

convert -size 2048x1536 -depth 8 rgb:inputfile -depth 10 outputfile.png

identify -verbose then says

Colorspace: sRGB
Chromaticity:
red primary: (0.64,0.33)
green primary: (0 ...