part 2. - lost in denoisers

[QQ]

greetings,

you might recognise me already from my silly questions, and from my lack of experience in digital video *grin*

anyway, im still in quest for a perfect recompress of LTU vs USA basketball match TV capture ;)

so here it is, part two:

i've tried tons, and loads, an uncountable amount of different smoothers, denoisers, grain removers and so on.. and thing is, either im doing something terribly wrong, or am i just blind, but they all look pretty similar to me! well, not all of them - dust did pretty good job, but then it made my conversion go down to 6fps, and encoding 2 hour tv capture with that is not nice!

so here i am, asking for your help.. i made a sample of the capture, for you to see how the noise looks like.. the final result will be of 384x288 resolution - i'm not sure wether NR should be run before or after resizing.

another point to note is that, usually after NR the result is still somewhat noisy, but at the same time its too smooth - when looking at faces they look just like one gray dot..

so, i hope someone of you can find a spare minute, and help silly ole me..

thanks!

http://dreamy.ws/files/r3sample.mpg

[scharfis_brain]

your sample is already deinterlaced.

provide a sample that is UNprocessed
(no further compression like MPEG, no resizing, no deinterlacing)

so it is hard, giving you an optimal denoising strategy

EDIT:

loadplugin("d:\x\dgdecode.dll")
loadplugin("d:\x\depan.dll")

mpeg2source("x.d2v")

mdata=last.DePanEstimate(zoommax=1,improve=false,pixaspect=1.094)
last.DePanInterleave(data=mdata,pixaspect=1.094,next=2,prev=2)
temporalsoften(1,10,13)
selectevery(5,2)
crop(8,0,-8,0)
lanczos4resize(352,288)

this script makes the noise going away without leaving too much denoiser-artifacts.

but with an interlaced input and some script modifications, the result would be much better.

[QQ]

well unfortunately i had to capture it to mpeg2 (dont have THAT much free disc space), so i did what i thought was best - capture to 5mbps mpeg2, 720x576.. perhaps that was a wrong choice? unfortunately that can't be changed anymore :(

[scharfis_brain]

then try out the script.

all you nedd is fizick's depan.dll

[QQ]

yeah, i got that plugin already, and am trying it out.

unfortunately, as mentioned in first part of my journey, im still struggling with aspect ratios, so im not sure why do you crop those 8 pixels, and then resize to 352x288, and not 384x288 :)

[scharfis_brain]

i went to 352x288 cause I thought of mpeg-1 as final format.

but judging the video itself, you can directly go from 720x576 to 384x288 (as square pixel format for AVI, cause your TV-Card seems to produce generic PAR).

[QQ]

well.. if you'd read part one (http://forum.doom9.org/showthread.php?s=&threadid=81089), you'd notice it isn't quite so, and i'm really not sure how exactly does it work, lol

p.s. thanks for your effort!