Hello everybody,
while messing around with a bad-quality video footage, I couldn't get rid of some strong block effect. Tried with Deblock_QED, but had no luck.
Can anybody help me, please?
Here's a sample - the block effect can be found after 5 seconds, in some other spots it's even a bit stronger. For me it would be nice to remove those artifacts.
Thanks in advance.
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deblock_qed() usage for interlaced video:
https://forum.videohelp.com/threads/361152-Correct-usage-of-Deblock_QED-for-Interlaced...ge#post2290489
I put it in its own function, deblock_qed_i():
Code:# Deblock_QED for interlaced video function deblock_qed_i ( clip clp, int "quant1", int "quant2", int "aOff1", int "bOff1", int "aOff2", int "bOff2", int "uv" ) { quant1 = default( quant1, 24 ) # Strength of block edge deblocking quant2 = default( quant2, 26 ) # Strength of block internal deblocking aOff1 = default( aOff1, 1 ) # halfway "sensitivity" and halfway a strength modifier for borders aOff2 = default( aOff2, 1 ) # halfway "sensitivity" and halfway a strength modifier for block interiors bOff1 = default( bOff1, 2 ) # "sensitivity to detect blocking" for borders bOff2 = default( bOff2, 2 ) # "sensitivity to detect blocking" for block interiors uv = default( uv, 3 ) # u=3 -> use proposed method for chroma deblocking # u=2 -> no chroma deblocking at all (fastest method) # u=1|-1 -> directly use chroma debl. from the normal|strong deblock() last=clp par=getparity() SeparateFields().PointResize(width,height) Deblock_QED(last, quant1, quant2, aOff1, aOff2, bOff1, bOff2, uv) AssumeFrameBased() SeparateFields() Merge(SelectEven(),SelectOdd()) par ? AssumeTFF() : AssumeBFF() Weave() }
Code:Mpeg2Source("Sample.d2v", CPU2="ooooxx", Info=3) Deblock_QED_i(quant1=40, quant2=45)
[Attachment 49515 - Click to enlarge]Last edited by jagabo; 4th Jul 2019 at 12:29.
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No, I didn't resize my source. The file I uploaded is the raw source as I received it. Thanks a lot jagabo for the tip, I played a little bit more with some parameters and the result is quite good. If anybody is able to suggest anything about the field issue, I would be very grateful.
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I don't see an obvious automated fix. You could always go through the video manually:
Code:Mpeg2Source("Sample.d2v", CPU2="ooooxx", Info=3) Deblock_QED_i(quant1=40, quant2=45) QTGMC(preset="fast") p1 = SelectEvery(6, 0,1,2,3,4).Trim(0,89) p2 = SelectEvery(6, 1,2,3,4,5).Trim(90,294) p3 = SelectEvery(6, 0,2,3,4,5).Trim(295,415) p4 = SelectEvery(6, 0,1,3,4,5).Trim(416,596) p5 = SelectEvery(6, 0,1,2,4,5).Trim(597,762) p6 = SelectEverY(6, 0,1,2,3,5).Trim(763,954 p1 + p2 + p3 + p4 + p5 + p6
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Here's a slightly simpler method:
Code:Mpeg2Source("D:\Downloads\Sample.d2v", CPU2="xxxxxx", Info=3) Deblock_QED_i(quant1=40, quant2=45) QTGMC(preset="fast") skip0 = SelectEvery(6, 1,2,3,4,5) skip1 = SelectEvery(6, 0, 2,3,4,5) skip2 = SelectEvery(6, 0,1, 3,4,5) skip3 = SelectEvery(6, 0,1,2, 4,5) skip4 = SelectEvery(6, 0,1,2,3, 5) skip5 = SelectEvery(6, 0,1,2,3,4 ) skip0 ReplaceFramesSimple(last, skip5, Mappings="[0 89]") ReplaceFramesSimple(last, skip1, Mappings="[295 415]") ReplaceFramesSimple(last, skip2, Mappings="[416 596]") ReplaceFramesSimple(last, skip3, Mappings="[597 762]") ReplaceFramesSimple(last, skip4, Mappings="[763 954]") ReplaceFramesSimple(last, skip5, Mappings="[954 1099]")
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