jagged edges when capturing from vhs

shock · 11th April 2003, 12:23

Im trying to capture some old headbangers ball episodes from vhs to dvd mpegs but they allways look like total crap. Edges of objects are jagged. See these screenshots to see what i mean..

Its not an interlacing problem that im pretty sure of. I capture them from a Panasonic pv-s7670 4head hifi through my ati aiw radeon 32mb ddr using svideo connection with vdub @ 29.97, 720x480, yuy2, huffy compression, and feed this avs into cce set to 2pass(3)vbr 2000/5000/9000, only add seq header checked.

LoadPlugin("D:\_Capturing and Encoding\DecombLegacy.dll")
LoadPlugin("D:\_Capturing and Encoding\mpeg2dec.dll")
AVIsource("D:\hbb.avi")
SeparateFields()
#CropBottom(10)
#AddBorders(0,5,0,5)
TemporalSmoother(2,3)
Weave()
ResampleAudio(44100)
Trim(0,147819) ++ Trim(147900,179267) ++ Trim(180806,208088).

These tapes just will not capture without edges of everything turning extremely jagged. The tapes were recorded with a 1990 or something 4head hifi (very expensive sucker back then) and when viewed on the tv it is as clear as day, very nice and clean picture. When converted to digital however they turn very ugly. Any ideas?

bb · 11th April 2003, 12:41

Looks like the incoming signal is too weak. I'd try to put an amplifier between your VCR and the S-Video In, e.g. my Macrovision remover box not only removes the Macrovision protection, but amplifies the signal, too.

bb

shock · 11th April 2003, 12:46

I dont have one of those unofrtunatly, but i do have a rg6 type signal ampifier (used for cable tv). I dont think that would work though. I did try to capture it throgh the tv tuner (with out that amp) also just to see and the jagged edges were still there. Im starting to wonder if its this crappy capture card i have.

bb · 11th April 2003, 13:23

Yes, maybe it needs a stronger signal to operate correctly. See if you can get a cheap S-Video amplifier in an electronics shop.

bb

^^-+I4004+-^^ · 12th April 2003, 05:10

> Looks like the incoming signal is too weak.

i believe it's not that.....
you have classic case on unstable VHS sync
signals:
your vertical lines jiggle like there's no tomorrow,
right?
i can post you thousands of images from
poor vhs sources (seems like copies are affected more)
that look same as yours (feeling better now?
hehe)
[currently converting some "Sledge Hammer" episodes...
VHS copies,much jiggle,look fine on tv..although :
come real close to tv screen...you'll see that thay wiggle
there too...]

there are probably two solutions
("probably" because i never used TBC so i can't tell
you if it'll help)
1-cheap...do some real hard temporal smoothing
(not so good results...ghosting problems)
2-expensive....TBC was made to cure things like
this....
(it would be ideal to have salesman that would
let you try if it helps you,or to show you at his place that will
help you..i wouldn't buy TBC only to find out that it can't do it..
be cautious, please....proper TBC is expensive too)

also it sometimes helps to try another VHS machine
(some can produce more stable sync signals from the same
tape)

i've got another idea;leave it on VHS........
(i'm only converting the tapes that started to fall apart...
very few of those,and usually no-name tapes..some of them are
second hand from video rentals store...yeap,that bad!)
you WILL NOT achieve better image on DVD than is now on VHS...
i can guarantee you that
(for sure sharpness will be worse on dvd-rip of vhs tape)

shock · 12th April 2003, 18:21

I guess its time to replace this aging Panasonic with one of these babies. They have built in tbc. This thing looks awesome.
-http://ww1.onecall.com/PID_15279.htm

^^-+I4004+-^^ · 12th April 2003, 19:45

also see the recent (and long) discussion on advc100...

fasttimes · 14th April 2003, 00:59

See http://www.avtoolbox.com/avt-8710.htm for an "inexpensive" Time Base Corrector. $180, and it will fix your problems. Great little unit, and really makes capping from analog tape sources a joy.

11th April 2003, 12:23	#1 \| Link
shock Registered User Join Date: Dec 2002 Location: El Cajon, Ca. Posts: 47	jagged edges when capturing from vhs Im trying to capture some old headbangers ball episodes from vhs to dvd mpegs but they allways look like total crap. Edges of objects are jagged. See these screenshots to see what i mean.. Its not an interlacing problem that im pretty sure of. I capture them from a Panasonic pv-s7670 4head hifi through my ati aiw radeon 32mb ddr using svideo connection with vdub @ 29.97, 720x480, yuy2, huffy compression, and feed this avs into cce set to 2pass(3)vbr 2000/5000/9000, only add seq header checked. LoadPlugin("D:\_Capturing and Encoding\DecombLegacy.dll") LoadPlugin("D:\_Capturing and Encoding\mpeg2dec.dll") AVIsource("D:\hbb.avi") SeparateFields() #CropBottom(10) #AddBorders(0,5,0,5) TemporalSmoother(2,3) Weave() ResampleAudio(44100) Trim(0,147819) ++ Trim(147900,179267) ++ Trim(180806,208088). These tapes just will not capture without edges of everything turning extremely jagged. The tapes were recorded with a 1990 or something 4head hifi (very expensive sucker back then) and when viewed on the tv it is as clear as day, very nice and clean picture. When converted to digital however they turn very ugly. Any ideas? Last edited by shock; 24th March 2004 at 01:55.

11th April 2003, 12:46	#3 \| Link
shock Registered User Join Date: Dec 2002 Location: El Cajon, Ca. Posts: 47	I dont have one of those unofrtunatly, but i do have a rg6 type signal ampifier (used for cable tv). I dont think that would work though. I did try to capture it throgh the tv tuner (with out that amp) also just to see and the jagged edges were still there. Im starting to wonder if its this crappy capture card i have. Last edited by shock; 11th April 2003 at 13:04.

11th April 2003, 12:41	#2 \| Link
bb Moderator Join Date: Oct 2001 Location: Germany Posts: 2,665	Looks like the incoming signal is too weak. I'd try to put an amplifier between your VCR and the S-Video In, e.g. my Macrovision remover box not only removes the Macrovision protection, but amplifies the signal, too. bb

11th April 2003, 13:23	#4 \| Link
bb Moderator Join Date: Oct 2001 Location: Germany Posts: 2,665	Yes, maybe it needs a stronger signal to operate correctly. See if you can get a cheap S-Video amplifier in an electronics shop. bb

12th April 2003, 05:10	#5 \| Link
^^-+I4004+-^^ Banned Join Date: Aug 2002 Location: Croatia [local name:Hrvatska] Posts: 551	> Looks like the incoming signal is too weak. i believe it's not that..... you have classic case on unstable VHS sync signals: your vertical lines jiggle like there's no tomorrow, right? i can post you thousands of images from poor vhs sources (seems like copies are affected more) that look same as yours (feeling better now? hehe) [currently converting some "Sledge Hammer" episodes... VHS copies,much jiggle,look fine on tv..although : come real close to tv screen...you'll see that thay wiggle there too...] there are probably two solutions ("probably" because i never used TBC so i can't tell you if it'll help) 1-cheap...do some real hard temporal smoothing (not so good results...ghosting problems) 2-expensive....TBC was made to cure things like this.... (it would be ideal to have salesman that would let you try if it helps you,or to show you at his place that will help you..i wouldn't buy TBC only to find out that it can't do it.. be cautious, please....proper TBC is expensive too) also it sometimes helps to try another VHS machine (some can produce more stable sync signals from the same tape) i've got another idea;leave it on VHS........ (i'm only converting the tapes that started to fall apart... very few of those,and usually no-name tapes..some of them are second hand from video rentals store...yeap,that bad!) you WILL NOT achieve better image on DVD than is now on VHS... i can guarantee you that (for sure sharpness will be worse on dvd-rip of vhs tape)

12th April 2003, 18:21	#6 \| Link
shock Registered User Join Date: Dec 2002 Location: El Cajon, Ca. Posts: 47	I guess its time to replace this aging Panasonic with one of these babies. They have built in tbc. This thing looks awesome. -http://ww1.onecall.com/PID_15279.htm

12th April 2003, 19:45	#7 \| Link
^^-+I4004+-^^ Banned Join Date: Aug 2002 Location: Croatia [local name:Hrvatska] Posts: 551	also see the recent (and long) discussion on advc100...

14th April 2003, 00:59	#8 \| Link
fasttimes What-- Me Worry? Join Date: Sep 2002 Posts: 111	See http://www.avtoolbox.com/avt-8710.htm for an "inexpensive" Time Base Corrector. $180, and it will fix your problems. Great little unit, and really makes capping from analog tape sources a joy.