Sony DV Codec DeCompressor Request

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John_Cline wrote on 10/1/2004, 11:36 AM
AudioIvan,

My opinion is pretty much the same as yours, Procoder 2 is excellent for interlaced sources, CCE is better for progressive sources. However, I don't do a lot of progressive video. I find that 24p or even 30p just doesn't have enough temporal resolution for the type of stuff that I do.

Yes, I use both Virtual Dub and AVIsynth.

John
johnmeyer wrote on 10/1/2004, 1:11 PM
AudioIvan,

I also use VD and AVISynth, although I am not as knowledgeable as the other John. If you have any questions, suggestions, or tips about either of them I am all ears. Much of my work involves restoration of flawed analog sources, and I am constantly trying new techniques and new plugins. I have found that the VD filters that have been re-written for AVISynth perform MUCH faster in the AVISynth environment, so I am now doing almost everything with AVISynth scripts.

A great product would be a Vegas plugin that would let you see the input and output of AVISynth scripts directly within Vegas. You can get close to this by importing AVS files into Vegas 5.0b via Wax, but there are too many limitations to make it practical (e.g., you cannot cut events because the new event starts over at the beginning of the original source video).

But, I digress ...
AudioIvan wrote on 10/1/2004, 7:27 PM
Good to hear guys, oh man I've been waiting and waiting for native AVIsynth support in Vegas for ages.
Satish did something about it but as you say very limited.
I do analog and DV only but I'm thinking of getting Progressive cam with 16:9 native format.
johnmeyer, VD would be just GUI helper, I prefer AVIsynth, you can use any VD filters in AVIsynth, the only drawback is that all VD filters require RGB32.
The speed in AVIsynth is amazing(providing that you operate in YV12-native colorspace for v2.55).
I'm also always open for new ideas,suggestions,tips.
Have you used QMF script, I constantly go and check people's home pages for new versions of the filters coz warpenterprises site doesn't get updated so often as before.
General motion compensation script would do wonders for any source, just sometimes is pain in the ass to find the right values.
What I would like to see is NLE editing suite based on AVIsynth withr open support for filters,ect. Imagine open source AVIsynth based editing app,GUI based on Vegas,Audio based on Forge/Acid....
Ah, well maybe will happen some day.

AudioIvan
farss wrote on 10/1/2004, 7:53 PM
You guys might find this of some interest:

Archangel

This thing looks like it can fix just about anything and it understands the type of damage different systems did to images to predict where further damage may occur.
AudioIvan wrote on 10/1/2004, 8:37 PM
Tnx. farss, very good link.
So now this explains the need for native support for AVIsynth in Vegas.
All that they can do, we can do it in AVIsynth.
There are filters out there that do exactly the same what this system does, and guess what THEY ARE ALL FREE ! ! !
Like I said General Motion Compensation and frame-by-frame restoration,edge detection can do wonders.

AudioIvan
farss wrote on 10/1/2004, 8:58 PM
I'm wondering if the FREE AVISynth tools can do things like repair one frame with bits from another?
If it can then even at a few 1000 dollars it'd be a bargain, this thing is worth as much as a house. The other thing is I don't know if it's the version in the link or a more upmarket version but it can work on DIs for film. There's one in this country being used for film restoration that previously wasn't economic to do by hand.
All that said I've never believed there was anything that could be done in RT hardware that cannot be done and done better in software at a lower cost. Sure it might take more time but it should be way cheaper.
Two things that do get in the way. Firstly copy protection, it's much harder to pirate the design of hardware than software. Secondly for some things the software cannot get at the sort of information that hardware can. Dropout compensation is one, it relies on the RF signal from the VCR heads to determine that something is missing from the tape.
At the moment I'm more interested in audio restoration tools. The Cedar units from Cambridge audio I'm told can perform miracles, at an incredible price though. As far as I know the algorithms are only available in their hardware but I have reason to believe some time ago the code 'leaked' out and was built into some software tools. What it does is way different to things like NR2, that works great on natural noise but actually quite useless for say tape hiss. The Cedar can remove tape hiss without damaging anything else (well so I'm told!).

Bob.
AudioIvan wrote on 10/1/2004, 9:30 PM
Just some of the filters that can do similar if not the same processing as the system:

http://bag.hotmail.ru/descratch/descratch.dhtml
http://bag.hotmail.ru/deflicker/deflicker.dhtml
http://bag.hotmail.ru/degrain/degrainmedian.dhtml
http://bag.hotmail.ru/defreq/defreq.dhtml
http://bag.hotmail.ru/vague/vaguedenoiser.dhtml
http://bag.hotmail.ru/genmotion/genmotion.dhtml
http://www.excite.co.jp/world/english/web/body/?wb_url=http%3A%2F%2Fnullinfo.s21.xrea.com%2F&submit=%83E%83F%83u%83y%81%5B%83W%96%7C%96%F3&wb_lp=JAEN&wb_dis=2&wb_co=excitejapan
http://www.missouri.edu/~kes25c/TTempSmoothv092.zip
http://biphome.spray.se/gunnart/video/deshaker.htm
http://niiyan.s8.xrea.com/avisynth/index_en.html
http://www.removedirt.de.tf/

AudioIvan
musicvid10 wrote on 10/1/2004, 10:58 PM
migod you guys do a lot of filtering and processing.
farss wrote on 10/1/2004, 11:07 PM
It beats the other way that it's sometimes done, 'repainting' it frame by frame by hand!

Bob