Is it diagonal rain free? Or does it need transcode to get rid of the diagonal rain?

the trick I found to cancel the diagonal rain was to set QPmin=19 and QPmax=51

In this article below you can see that 19 is a good value for image quality, also the panasonic default value is 20, so the no diagonal rain patch is one step better in QP:

http://slhck.info/articles/crf

The versions below decrease the QPmax values in an attempt to increase quality in shadows, dark areas and low light situations.

Try to perceive which one will deliver a higher datarate in low light and also keep the image diagonal rain free. Point camera to a grey surface, one or two fstop underexposed to see if diagonal rain shows up.

Everything is the same compared to the no diagonal rain patch, only the QPmax was changed.

seta = QPmin=19, QPmax=51 (no diagonal rain patch)

sete = QPmin=19, QPmax=32

setf = QPmin=19, QPmax=35

setg = QPmin=19, QPmax=38

seth = QPmin=19, QPmax=28

When I develop a patch, I try almost every possible values for a given setting.

I think the QPmax is the last thing to find, so I created patches with all QPmax values from 19 to 51.

I believe one of these will deliver a better image texture, better lowlight image and higher datarate in lowlight with perfect stability.

How to test, 3 videos for each patch, with OIS enabled, autofocus and autoexposure: 1) ten seconds in the death chart iso 400, 2) 10 seconds in good light, more detailed image iso 100, 3) 10 seconds in lowlight iso 1000, less detailed image. To test the diagonal rain, point camera to a grey surface and start recording with correct exposure, then start to underxpose until get a black image.

Open video in streamparser to see the datarate and frames behavior, see video in screen to perceive visual quality.

Less artifacts, less macroblocks, more texture in surfaces, higher datarate, higher frames size, more constant frames size, and more stability are better.

When open the patch in ptool, put mouse over patch letter to read patch details, last number is the QPmax: example: gh1_44_19-51 (44 is the fullhd datarate, 19 is the QPmin, 51 is the QPmax)

I am away from gh1 at this moment, so If there is someone to try be welcome. Let's cooperate!

this last patch in post above does not work good. the datsarate increases, but image gets squares. maybe increase the qpmax to 51 can solve, but I am tired about patches.

I believe the custom matrix is increasing datarate, and maybe the problem is qpmax lowered to 31, I think keep qpmax=51 will solve and keep datrate higher, but I will not test.

better keep the "no diagonal rain patch" which works pretty good.