Thread: Avisynth+
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Old 7th January 2019, 23:34   #4393  |  Link
Stereodude
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Join Date: Dec 2002
Location: Region 0
Posts: 1,436
Quote:
Originally Posted by davidhorman View Post
In fact, consider using expr to create a 1-pixel high sliding bar clip and then pointresize it up to full height.
I'll admit I've never used expr and I haven't the foggiest idea how to create that 1-pixel high sliding bar clip with it.

My original idea of replacing the for loops didn't work. Well, I should clarify that... I was able to replace the two for loops with ScriptClip + ConditionalReader (the core piece), but it seems that the use of ScriptClip + ConditionalReader multiple times in a script with the same variable names doesn't work as expected so a loop of multiple instance fails. That would only have ~109 splices instead of 103848 (presumably not crashing).

For example:
Code:
LEN=103848
mini_length=956

Asrc=BlankClip(Length=LEN, height=786, width=1920, Pixel_type="YV12",COLOR=$FF0000).ShowFrameNumber
Bsrc=BlankClip(Length=LEN, height=786, width=1920, Pixel_type="YV12",COLOR=$00FF00).ShowFrameNumber

Loop_cnt=0
A=Asrc.trim(Loop_cnt*mini_length, ((Loop_cnt+1)*mini_length-1))
B=Bsrc.trim(Loop_cnt*mini_length, ((Loop_cnt+1)*mini_length-1))
ScriptClip(A, """
stackhorizontal(stackhorizontal(A.crop(0,0,n,-0),B.crop(n,0,960,-0)),A.crop(960+n,0,-0,-0))
""")
ConditionalReader("slide.txt", "n", false)
Y = last

Loop_cnt = Loop_cnt + 1
A=Asrc.trim(Loop_cnt*mini_length, ((Loop_cnt+1)*mini_length-1))
B=Bsrc.trim(Loop_cnt*mini_length, ((Loop_cnt+1)*mini_length-1))
ScriptClip(A, """
stackhorizontal(stackhorizontal(A.crop(0,0,n,-0),B.crop(n,0,960,-0)),A.crop(960+n,0,-0,-0))
""")
ConditionalReader("slide.txt", "n", false)
Z = last

return Y
#return Z
I don't understand why Y and Z are identical. If either of the two code blocks are commented out Y/Z are what is expected, or if the variable names in each block are unique (like A0, B0 in the first and A1, B1 in the second) Y & Z are what is expected. But with limitation I can't use a for or while loop to do this 109 times or even do a manual unroll with copy and paste without making every iteration unique.

slide.txt:
Code:
Type int

0	2
1	4
2	6
3	8
4	10
5	12
6	14
7	16
8	18
9	20
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11	24
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953	8
954	6
955	4

Last edited by Stereodude; 7th January 2019 at 23:36.
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