GH1 noise removal techniques
I filmed scenes in most of my indie film using a GH13. There are a lot of outdoor scenes at night. With the resultant issues of fpn/banding/noise.
For a flat response, use smooth film mode. And AdobeRGB.
Press menu, camera icon at top, goto pg4, drop down 1, colourspace , SRGB or AdobeRGB, click on it, AdobeRGB?
I found neat video to be the best option for removing noise.
The only issue is the settings.
I found that it brought out banding in the sky and around light sources.
Here is my workflow.
FCP7 with FCS3
Convert mts files to Cineform.
Set all the quality options in FCP to Best and 10-bit.
For noisy footage. use a round trip to Motion. FCP7 is a 32-bit app and tends to crash using NV. Motion is 64-bit and can use more RAM.
In Motion apply NV first.
There are 2 options for settings
1. Upscaled video
http://forums.creativecow.net/thread/8/1132281
Open scene project in FCP 7
Click File -> Send To -> Compressor
Scene will open in Compressor
Render to 4k with this preset:
Settings Window
Apple -> Formats -> Quicktime -> Uncompressed 10-Bit (drag this setting onto the clip)
Double click the setting while it is on the clip to open it and modify:
Go to:
Encoder Tab:
File Format: Quicktime Movie
Allow Job Segmenting: ON
Video Settings: Prores 4444 (or 422 HQ), Millions of Colors +
Audio: Disabled (or Pass-through)
Frame Controls Tab:
Frame Controls: On
Resize Filter: Best (Statistical Prediction)
Output Fields: Progressive
Deinterlace: Best
Adaptive Details: On
Anti-alias: 100
Details Level: 25
Rate Conversion: Best
Duration: 100% of source
Filter’s tab: Nothing
Geometry tab:
Frame Size: Custom – 4096 by 2304
Pixel Aspect: 1.0000
Click Save (lower right hand corner) and Name “4K Prores 16:9″
Now you will find this preset under Settings -> Custom in the Settings Window
Delete current settings on clip – Add “4K Prores 16:9″ to the clip
Add a Destination (Settings -> Destinations -> Plus Sign to add a local destination -> choose a folder on the external drive)
Drag destination to clip
Hit Submit
Wait for clip to render out. (you can see progress under Window -> History, or in ur system queue)
Adding the Neatvideo Filter in FCP to the 4k clip:
Open up a new project in FCP
Right click on Sequence One and go to Settings
General Tab:
Under Frame Size put Custom and 4096 by 2304
Pixel Aspect: Square
Editing Timebase: 23.98
Compressor: Apple Prores 4444 (or 422 HQ)
Click Advanced: Millions of Colors to Millions of Colors +
Video Processing Tab:
Render 10-Bit material in High-precision YUV
Maximum White as White
Motion Filtering Quality: Best
Leave all other settings.
Save Project as (scene title – 4k)
Load 4k video file by dragging it into Browser Window
Place 4k video into the timeline
Go to Effects in the Browser Window
Video Effects -> Stylize -> Add Noise (drag effect onto clip)
Double click the clip on the timeline to open up the viewer window
go to Filters tab
Change Add Noise settings:
Amount: .05
Type: Gaussian Noise
Monochrome: Off
Blend Mode: Normal
Autoanimate: On
Mix: 100
Go to Effects in the Browser Window
Video Effects -> Neat Video -> Reduce Noise (drag effect onto clip)
Double click the clip on the timeline to open up the viewer window
go to Filters Tab
Set Reduce Noise settings:
Temporal Filter Radius: 5
Temporal Filter Threshold: 50
Adaptive Filtration: ON
Mix: 100
(The Temporal Filter Radius is the super-resolution algorithm and takes data from the previous 5 frames and the subsequent 5 frames to compile a higher-resolution output)
Click Options
In the top left window, click and drag a box around space that has no contrast or color change, but just noise (if you cannot find one, click Auto Profile)
Click Auto Fine Tune
Leave Luma filter at 60% and Chroma at 100%.
Set sharpening to 100%
Effects work is now done. Now we will export through compressor back to 2k resolution for our final print. (or we can leave it at 4k for the final print)
Click File -> Send To -> Compressor
Export in Prores format to 4k or 2k. There you go. Now you have clean, upsampled footage ready for projection.
2. Regular Video
http://www.dvxuser.com/V6/showthread.php?234142-Neat-video-for-GH1
the only things that really helped me personally were upping all the noise reduction amounts to 100%. Then slightly adjusting the noise thresholds (these are the bits that lose image detail if you go too high.)
The best result I could find was upping hight to 35%, mid to 20% and low at 15%.
High quality and resolution boxes ticked. Nil else.
first keep your temporal filter radius at 1. Increasing this usually increases quality at the expense of render time. I was happy to do that – but in fact for banding noise it makes things worse if you crank it up.