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View Full Version : Deinterlace PAL in 720x556


ndwpgd
18th November 2006, 17:55
Hi,
I have sport ( fast movement and travelling) events captured in PAL 720x576 in interlaced mode that I want to edit. I tried many capture modes, tools and filters but no one was able to produce a decent “progressive like” still picture, except when I deleted all the odd (or even) lines and thus reduce to 360x288.

As soon as you transfer to a PC, whether you finally produce mpeg2, xvid, you get a nice film, but every paused image that contains movement is awfully interlaced (on every PC viewer or after transfer to xvid or VOB DVD to the TV). I really wonder what all these deinterlace filters do, because I only see marginal to no improvement on the mice teeth (I tried Virtualdub-MPEG2 1.6.15 build 24600 with original filters, those from Gunnar Thalin , field shift, blend, unfold, etc)

Funnily, if you simply play on a TV from your camcorder or even after recording on a DVD recorder (..VOB mode), you get the hi quality interlaced film in 720x576 and when you pause, you get a nice non-interlaced picture (I presume that only one frame is extended from 288 to 576 to achieve this).

Is there a solution to improve this ?

Hardware:
JVC camcorder GR-DVL-9000 on miniDV cassettes in hiQ 720x576 PAL output via S-video.
Plextor M402U
Philips DVD recorder 3355
PC PIII 1000 512MB XP SP2 build 2600

Guest
18th November 2006, 19:03
I only see marginal to no improvement on the mice teeth You must be doing something wrong then. Try SmartDeinterlacer and give us your settings and before and after frame grabs.

SeeMoreDigital
18th November 2006, 20:34
Why do you want to de-interlace?

Personally I would keep your MPEG-2 or MPEG-4 encodes "interlaced" and at 720x576 pixels... They'll look great when spun in a stand-alone player because (unlike many software players) hardware chip-sets fully support interlaced content :D

ndwpgd
19th November 2006, 17:50
Thks for these quick replies.
Neuron2: I could not find Smartdeintelacer, the http://sauron.mordor.net/dgraft/smart.html does not reply. Do you have another link? or is it the same as SmoothDeinterlace plugin for virtualdub : deinterlace - smooth v1.1http://home.bip.net/gunnart/video/#deinterlacesmooth) , because i tried with several paramaters and it does not change much.
The following picture is extracted from from the original vob (interlaced)
http://www.helpmyorg.com/interlaced.png
Only by using a filter like the internal virtualdub deinterlace with as parameter "duplicate field2" can I get something like below, of course the field is now of 288 quality instead of 576.
http://www.helpmyorg.com/deinterlaced.png

SeeMoreDigital: because I dunno how to produce mpeg2 output without unnecessarily reencoding. Virtualdub only outputs avi, thus I must encode xvid or uncompressed which produces terabites (or what do i do wrong?). Then I only have Intervideo Win DVD creator to produce VOBs, and that reencodes everything. Do you recommend an open tool to produce full DVD format?
Also, if I produce xvid in true 576, still images on my stand-alone player show the interlaced picture as above

setarip_old
19th November 2006, 18:06
Try the following link instead:

http://neuron2.net/

And then click on "Mine" to see a list of Donald Graft's filters (Scroll down past the AviSynth filters to see the VirtualDub filters)

SeeMoreDigital
19th November 2006, 18:32
SeeMoreDigital: because I dunno how to produce mpeg2 output without unnecessarily reencoding. Virtualdub only outputs avi, thus I must encode xvid or uncompressed which produces terabites (or what do i do wrong?). Then I only have Intervideo Win DVD creator to produce VOBs, and that reencodes everything. Do you recommend an open tool to produce full DVD format?
Also, if I produce xvid in true 576, still images on my stand-alone player show the interlaced picture as aboveIf you use VirtualDub (with say, FFDshow's DV decoder filter), it should be possible to generate "interlaced" MPEG-4 (Xvid or DivX) video streams directly from your "interlaced" DV.avi source ;)

Make sure XviD's encoder is configured to do "Interlaced Encoding" with "Top Field First"


Cheers

ndwpgd
19th November 2006, 21:41
wow, finally a deinterlace filter that works ! many thanks setarip_old.
I used v2.7 beta without any problem so far. For those who might be interested, look at the following extracts from the xvix avi's that I produced with smart.vdf
First the original VOB interlaced. Big teeth for the horse's head that moves fast, and also a little bot of saws on the body of the lady, because there is a slow moving travelling. Zoom in to see the details.
http://www.helpmyorg.com/full.png

Then by dedoubling every line, thus in fact 288 :
http://www.helpmyorg.com/half.png

And with the smart filter, all parameters by default:
http://www.helpmyorg.com/smart.png

SeeMoreDIgital: why do you insist to keep it interlaced? Is there a method to display a non interlaced picture when I hit pause on the stand-alone player? I mean in xvid avi mode, because i didnt figure out yet how to produce quality VOB files that follow the complex DVD structure with authoring, etc (I use Win DVD Creator). Is there a good open source tool for this?
Thks in advance,

SeeMoreDigital
19th November 2006, 21:50
SeeMoreDIgital: why do you insist to keep it interlaced? Because it helps keep detail that's often lost by de-interlacing...

You wont notice much difference on a "software" PC/monitor set-up but will on a "hardware" TV/stand-alone set-up...


Each to their own though...

setarip_old
20th November 2006, 09:08
wow, finally a deinterlace filter that works ! many thanks setarip_old.Although it was certainly my pleasure to provide you with a valid link, all of your thanks should go to "neuron2" (Otherwise known as Donald Graft ;>})...