range 3 to 30. Default values are kmin =
9, kmax = 17 for lossless compression and kmin = 3, kmax = 5
for lossy compression. <br>
These two options are relevant only for animated images with
large number of frames (&gt;50). <br>
When lower values are used, more frames will be converted to
key frames. This may lead to smaller number of frames
required to decode a frame on average, thereby improving the
decoding performance. But this may lead to slightly bigger
file sizes. Higher values may lead to worse deco