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| look997 |
| Posted: Mar 13 2014, 11:14 PM |
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Newbie
Group: Members
Posts: 1
Member No.: 37784
Joined: 13-March 14
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I have a pack of filters for VirtualDub.
For now, I chose these:
Deinterlace
Dynamic Noise Reduction
2d cleaner
smart smoother
fxVHS
Automatic correction of white balance
I'm thinking of those (actually it not only filters but also some other names):
flaXen
spatial chroma
reduce analog noise
time base corrector
temporal anti-aliasing
Neuroimaging Data Processing/Temporal Filtering
levels and sharpen
Please tell me if they are good (better replacements?), Which determine the order of what to add what discarded. Around the optimal settings for them.
In particular, I'm interested in the noise, do not know if it can be reduced at all.
With these settings, the picture moves like the hot air. Can it be repaired?
If the tape is mechanically damaged, the only way to improve is appropriate filter, such as podmieniaj±cy lines on a similar piece from a neighboring cage. There is such a thing?
https://drive.google.com/file/d/0B98WbK8LCv...dit?usp=sharing |
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| raffriff42 |
| Posted: Mar 15 2014, 03:59 PM |
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Advanced Member
Group: Members
Posts: 384
Member No.: 35081
Joined: 25-June 12
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The main problem is tape damage as you mention; this is helped somewhat by a playback machine with integrated TBC & dropout concealment. Software "timebase correction" won't help much, if at all.
I was just reading about the Avisynth Median filter (averages multiple capture passes), which should reduce the severity of the noise throughout; since the tape damage artifacts are mostly noise, they should be calmed down a bit, at least:
http://forum.doom9.org/showthread.php?p=16...275#post1668275
This post has been edited by raffriff42 on Mar 15 2014, 04:24 PM |
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| evropej |
| Posted: Mar 17 2014, 04:50 AM |
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Advanced Member
Group: Members
Posts: 514
Member No.: 26523
Joined: 28-November 09
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First step is to stabilize the video with deshaker. Use lossless video compression.
Second step, deblock and increase video dimensions to 200% or 300%.
Now process for noise, neat video does the best job at noise removal but its not free.
Once done, sharpen and decrease video dimensions.
Deshaking the video helps the noise software latch on to noise better.
Deblocking and increasing dimensions removes video artifacts and some level of noise.
Remember not to go nuts on noise removal based on PC monitor refresh rates since a TV will not show the same noise.
You can then decrease the video size which will eliminate noise again.
Since noise removal is high frequency attenuation, you will lose detail of non noise areas.
So its better to suffer with noise detailed video then to have a blurred noiseless video.
Just my 2 cents. |
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