I'm so embarrased of asking this question...(applying a filter to a frame range)

[Chainmax]

I am currently trying to rip one of my DVDs and one scene in particular has more blocks and noise than the rest of the video. I'd like to apply a filter on a given frame range? Yeah, I should know this by now, but I never had to do this before, and I couldn't find anything about this in the Avisynth docs.


++

[tedkunich]

pssst... ApplyRange

[Chainmax]

Thanks.

[Nicholi]

Alternatively you could use this method, which is in Yatta.

PresetClip0=Preset0()
PresetClip6=Preset6()
PresetClip0.Trim(0,1252)+PresetClip6.Trim(1253,1502)+PresetClip0.Trim(1503,0)

Defining the presets earlier in the script as such.

function Preset0(clip c) {
#Name: Basic Filtering
c
SmoothMe()
SharpenMe()
return last
}

Really nice and simple because it's just a button (or key) to press as you are visually watching the stream in Yatta. I find it nifty at least.

[Corran]

####################################################################
# SceneAdjust by Corran     Adapted from Scintilla's Tweakscene    #
# Usage:  SceneAdjust(start,end,filters)                           #
#                                                                  #
# To use filters that use strings like deen("a3d",1)               #
#      you need to use triple quotes.                              #
# e.g. SceneAdjust(30,80,filters="""deen("a3d",1).mftoon()""")     #
####################################################################

function sceneadjust(clip a, int "start", int "end", string "filters")  {
start = Default(start,0)
end = Default(end,a.framecount)

part1 = (start <= 1) ? a.Trim(0,-1)  : a.trim(0,start-1)
part3 = (end >= a.framecount-1) ? a.trim(0,-1) : a.trim(end+1,a.framecount)
a=part1+Eval("a."+filters).trim(start,end)+part3
a = (start <= 1)? a.trim(1,a.framecount) : a
(end >= a.framecount-1) ? a.trim(0,a.framecount-2):a
}

...it has been a long time since I wrote this. I think the limitation was that it couldn't apply filters to the first 2 and last 2 frames of the clip. (Safety feature to prevent Trim() from screwing up the frame count.)

If you only have one function to apply then applyrange would be better and faster.

I made this for ease of use and I don't really plan on updating it.

[stickboy]

Yes, using Trim in user-defined functions is dangerous if the frame numbers are variable.

The internal ApplyRange function has some limitations. My JDL_ApplyRange function basically does what Nicholi and Corran said but in a safe way and without start/end frame limitations.

[Corran]

Originally posted by stickboy
Yes, using Trim in user-defined functions is dangerous if the frame numbers are variable.

The internal ApplyRange function has some limitations. My JDL_ApplyRange function basically does what Nicholi and Corran said but in a safe way and without start/end frame limitations.

-_- I wish I had found that before making my own...