Quantcast How to correctly extract interlaced VHS video fields to edit in Photoshop? - digitalFAQ Forum
Go Back    Forum > Digital Video > Video Project Help > Edit Video, Audio

Reply
 
LinkBack Thread Tools
  #1  
12-14-2021, 05:40 AM
brodenn brodenn is offline
Free Member
 
Join Date: Feb 2021
Posts: 8
Thanked 1 Time in 1 Post
I apologise if there is a guide for this somewhere, but I haven't had much luck looking. I have my VHS capture that I am happy with (i.e. all remaining errors seem unresolvable in the capture process), and I would like to do some manual touch-up on a few fields. The issue I have is I don't know how to extract/re-insert edited fields into the footage.

The way I normally do this when working with progressive video is to import my video into Premiere Pro, find the frame(s) that need editing, click 'export frame', make my edits in Photoshop, save the new frame as a PNG, and re-insert the frame after editing.

Because Interlaced video works in fields, When I try this in Premiere, I always inadvertently extract two fields at once because of how Premiere Pro deals with the footage. Just to be clear, I am not trying to de-interlace, I trust my TV enough for that. All I want is to be able to edit fields individually.
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Ads / Sponsors
 
Join Date: ∞
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
12-14-2021, 05:55 AM
lordsmurf's Avatar
lordsmurf lordsmurf is online now
Site Staff | Video
 
Join Date: Dec 2002
Posts: 11,759
Thanked 2,147 Times in 1,848 Posts
Premiere is useless for this.
Use Avisynth (or Vapoursynth), and Hybrid (or AvsPmod) can help if you're new to scripting.

You need to use QTGMC to bob/separate the fields. Export a clip.

Do not use a video player like VLC to screenshot. Extract actual frames. VirtualDub2 can do this.

You can reassemble in Premiere.

Note that any Photoshop editing can effectively mess up the interlacing. So just leaving it deinterlaced may be needed. You can certainly try to reinterlace in Avisynth, but don't be shocked if it looks odd.

- Did my advice help you? Then become a Premium Member and support this site.
- For sale in the marketplace: TBCs, workflows, capture cards, VCRs
Reply With Quote
The following users thank lordsmurf for this useful post: brodenn (12-15-2021)
  #3  
12-14-2021, 06:51 AM
lollo2 lollo2 is offline
Free Member
 
Join Date: Mar 2013
Location: Italy
Posts: 458
Thanked 123 Times in 106 Posts
Quote:
All I want is to be able to edit fields individually.
In AviSynth do: SeparateFields(), SelectEven(), SelectOld()

In alternative you can use a lossless deinterlacer at double framerate, like Nnedi3(field=-2) or QTGMC(lossless) to build the frame from the 2 fields, do all your processing, and then interlace back.

A channel on S-VHS / VHS capture and AviSynth restoration https://bit.ly/3mHWbkN
Reply With Quote
The following users thank lollo2 for this useful post: brodenn (12-15-2021)
  #4  
12-14-2021, 11:39 PM
brodenn brodenn is offline
Free Member
 
Join Date: Feb 2021
Posts: 8
Thanked 1 Time in 1 Post
Thank you both for your help! I was actually going to try a script, but then I though surely there's a quicker way to do this. No matter, the script I did worked perfectly and line doubled each field to make two frames. Then I wrote an additional script to re-combine the fields into a single frame.
Reply With Quote
Reply




Tags
capture, editing, interlaced, vhs

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to extract, save homemade DVD video file for streaming? rocko Encode, Convert for streaming 6 07-13-2021 04:44 AM
Are the fields of an interlaced really "shifted"? benzio Edit Video, Audio 3 03-04-2018 05:09 PM
Editing interlaced footage without destroying fields? JamieStar99 Edit Video, Audio 3 02-23-2018 03:17 PM
Metadata Encoding guide/defintions for video data fields? scanner9 General Discussion 1 07-18-2014 02:27 PM
Capture interlaced, but how to to keep video interlaced when making DVDs? premiumcapture Encode, Convert for discs 11 12-21-2013 03:40 PM

Thread Tools



 
All times are GMT -5. The time now is 07:20 PM