If you are reading in 8-bit images, and also outputting 8-bit images, and the degreesPerGraylevel does not match the desiredDegreesPerGraylevel value (or there are other filters etc set), then there should be some 8-bit to 8-bit processing occurring, and so the output should not look identical to the input.
This should allow some experimentation with changing the dDPG once the sequence is already in 8-bit format.
If you are reading in 8-bit images, and also outputting 8-bit images, and the degreesPerGraylevel does not match the desiredDegreesPerGraylevel value (or there are other filters etc set), then there should be some 8-bit to 8-bit processing occurring, and so the output should not look identical to the input.
This should allow some experimentation with changing the dDPG once the sequence is already in 8-bit format.