I would like to be able to add some luma noise back without adding the chroma noise as well.WhoisRip wrote:Re-Introduce some color noise (and the option to set the percentage) ...
Search found 15 matches
- Sat May 20, 2017 1:49 am
- Forum: Improvements, new features
- Topic: Using Neat Video to RE-APPLY noise/grain
- Replies: 14
- Views: 27972
- Wed Jun 03, 2015 5:07 pm
- Forum: Bugs, problems, issues
- Topic: Flickering / unstable filtration
- Replies: 2
- Views: 4210
- Wed Jun 03, 2015 3:27 am
- Forum: Bugs, problems, issues
- Topic: Flickering / unstable filtration
- Replies: 2
- Views: 4210
Flickering / unstable filtration
There is a filtration issue I cannot get rid of in NV3 (and the NV4 demo). It involves areas of the image which lack texture or defined edges, e.g. out of focus background areas. The temporal filter seems unable to realise that these background areas are entirely static, even with a temporal radius ...
- Sat Feb 28, 2015 3:23 pm
- Forum: Using Neat Video
- Topic: Toning down temporal processing
- Replies: 9
- Views: 9473
I always switch off spatial noise reduction but for temporal, the profile certainly has an effect. The 'noise level' settings (but apparently not the 'noise reduction amount' settings) also have an effect, though it seems to be subtle. E2a : the 'noise reduction amount' settings in fact do also slig...
- Fri Feb 27, 2015 7:17 am
- Forum: Using Neat Video
- Topic: Toning down temporal processing
- Replies: 9
- Views: 9473
The issue with the temporal filter is that with the threshold turned down, instead of seeing more unfiltered pixels, we see some kind of undocumented spatial filter applied, which kicks in wherever the temporal filter decides to leave a pixel unfiltered. Clearly it helps to reduce visible noise wher...
- Fri Aug 15, 2014 8:19 pm
- Forum: Bugs, problems, issues
- Topic: Artifacts with high threshold in Virtualdub
- Replies: 1
- Views: 3894
Artifacts with high threshold in Virtualdub
I have a VHS capture with some letterboxing at various places. I find an increased temporal threshold very useful with VHS (more-so than just increasing the radius) but I have found it leads to artifacts just underneath the upper black border. The artifacts shift from frame to frame and are quite ob...
- Thu Jun 05, 2014 12:20 am
- Forum: Improvements, new features
- Topic: Seperate controls for Luma/chroma for temporal NR
- Replies: 2
- Views: 13896
- Sat Aug 17, 2013 10:35 pm
- Forum: Improvements, new features
- Topic: Spatial filter within temporal filter
- Replies: 2
- Views: 8550
Thanks for responding, Vlad. In NV2, switching off spatial filtering and reducing temporal filter threshold to -100 results in a frame which is identical to the input. This does not happen in NV3, the frame is clearly filtered by an undocumented spatial filter. I would like to be able to switch this...
- Fri Aug 16, 2013 3:07 pm
- Forum: Improvements, new features
- Topic: Spatial filter within temporal filter
- Replies: 2
- Views: 8550
Spatial filter within temporal filter
It seems that version 3 introduced a (very aggressive) 'hidden' spatial filter which is tied to the temporal filter and is separate from the switchable spatial filter in NV3. It can be seen in action by setting the switchable spatial filter to 0% and the temporal filter to it's lowest threshold, so ...
- Sun May 20, 2012 7:15 pm
- Forum: Using Neat Video
- Topic: How to choose card for GPU acceleration?
- Replies: 44
- Views: 76136
With regard to memory bandwidth, I asked in another thread whether it was worth shelling out for a setup with quad-channel memory. An Intel i7-3820 quad core cpu (with quad memory controller) and socket 2011 motherboard can be had for a semi-reasonable price. At what point does extra memory bandwidt...
- Tue May 08, 2012 5:27 am
- Forum: General questions
- Topic: Memory bandwidth / cost
- Replies: 1
- Views: 4159
Memory bandwidth / cost
I know you guys have mentioned more than once that system memory bandwidth is a very important factor in predicting performance of NV. A new PC build is in the back of my mind and I wanted to know if the expensive high-end motherboards (the ones with quad-channel memory) are worth paying for over re...
- Fri Feb 17, 2012 2:38 pm
- Forum: Bugs, problems, issues
- Topic: Left edge black border causes improper filtration
- Replies: 6
- Views: 8626
Left edge black border causes improper filtration
I have noticed an issue in Virtualdub NV ... if there is a black border of less than 16 pixels at the left of the frame, especially a hard edged border, it causes the temporal filter not to clean the left edge of the image. Even a one pixel wide black border disrupts filtration. The right hand edge ...
- Thu Jan 26, 2012 6:49 am
- Forum: General questions
- Topic: Adaptive filtration for interlaced video
- Replies: 1
- Views: 4756
Adaptive filtration for interlaced video
Since interlaced filtering simply splits the video into 2 streams/fields, does NV vary its "adaptive filtration" independently for each field ? I ask because I have found that it is not unusual for old VHS tapes to have one field that is noisier than the other (even after the playback VCR ...
- Fri Sep 09, 2011 5:58 pm
- Forum: Bugs, problems, issues
- Topic: VitrualDub Version 3.0 64bit : Job abort during process
- Replies: 20
- Views: 22874
- Thu Sep 01, 2011 6:40 pm
- Forum: Bugs, problems, issues
- Topic: VitrualDub Version 3.0 64bit : Job abort during process
- Replies: 20
- Views: 22874
demo version update ?
I've observed the same issue in the Neat Video 3 demo, and am also using Virtualdub on XP (32bit) SP3. Neatvideo crashes after a few thousand frames (the actual number varies with each render), where Neat Video is the only filter, and I have tried two output codecs (HuffYUV and DivX) and with CUDA a...