Steven M. Schultz wrote:
> On Fri, 3 Nov 2006, [UTF-8] Bernhard Frühmesser wrote:
> 
>> I am not sure, but i think the tape was used for recordings several 
>> times before.
> 
>       Ah, ok - a worn tape could cause dropouts.
> 
>>>     medianfiltering the chroma only, then using yuvdenoise with moderately
>>>     high thresholds (-t 6,10,10 and perhaps even add -m 4,8,8) will help
>> Hmm, yeah, this settings help a bit more with noise - cool...
> 
>       For really bad noise you might also add -M 4,8,8 (this  is the post
>       median filter applied after the -t filter).  

Yeah, i have been playing around a bit yesterday night and the result 
was not bad expect the scratch lines.

>> I don´t know GIMP very good, same for Photoshop.
> 
>       Can always learn :)

Somehow man would need a 48 hours day :-)

>> Yep, the whole video has more than 150000 Frames and the lines are not 
>> always on the same place in the picture(s). So using the GIMP or 
>> Photoshop would take ages i think.
> 
>       Ok, that answers my question.  If the lines are not consistently in
>       the same location then the filters I suggested will not be useful.
> 
>       Restoration of video is time consuming - that's why it can take a
>       studio a year or two to 'remaster' a movie using 2K (or 4K) scans
>       of the film.
> 
>> Yep, some month ago i read about a programm that does scratch line 
>> removal in a video it just copies nearby pixels in a radius which you 
>> can set before, i remember it was only for Windows (unfortunately) but i 
>> can´t remember the site :-(
> 
>       Earlier there was a reply mentioning an avisynth filter - is that
>       the program you are thinking of? 

No, i think it was a plugin filter for an existing programm.

>> Hmm, i have never tested to load files in Final Cut Pro which i have 
>> recorded with lavrec, but since it´s MJPEG A it should work.
> 
>       Yes, MJPEG will work.  But if the scratches/dropouts are not in the
>       same place then cloning a fixed area from one place to another will
>       not work :(
> 
>> and i know ppl who have programming skills but no time for other 
>> projects :-(
> 
>       That seems to be a constant problem - the folks who can do the work
>       are too busy with other projects (or 'real work')
> 
>> Thanks so far, i´ll play around with it and check the FCP filter.
> 
>       I'm not sure how much use it will be in this case.  I have that
>       plugin and it's fairly good at covering over a logo which stays in the
>       say place from frame to frame.  I do not think it will be useful
>       with randomly moving lines :(
>
>       If there are some scratch removal filters, perhaps from the GIMP,
>       available maybe they could be ported to a mjpegtools utility.  That
>       is how y4munsharp was created - that program is essentially the
>       GIMP unsharp-mask plugin converted to a y4m utility.

I´ll play around with FCP a bit and compare the final results.

Cheers,
BF.

>       Cheers,
>       Steven Schultz
> 


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