Hi,
Progressive JPEGs I imagine are ancient history [1], they come from a
time when download speeds were low, and there was an advantage in
displaying images as they arrived - so you could rapidly see if you
wanted to wait for the whole picture to arrive.
They'd transmit lines 1, 5, 9,... then lines 2, 6, 13. I can see this
means it is necessary to assemble the whole picture in memory if you
want to pass on lines in the order 1,2,3,4,5
All interesting stuff. But why no problem with the older version of the
program and library.
[1] a quick Google and people are still promoting them as worthwhile.
--
David Pilling
www.davidpilling.com
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