#1  
01-19-2017, 03:45 PM
esotech esotech is offline
Free Member
 
Join Date: Jan 2017
Posts: 6
Thanked 0 Times in 0 Posts
I'm converting a Hi8 tape and it seems that it turns green midway. I've tried playing it in 3 different camcorders (all Sony) and using two different capture devices (Elgato and ATI USB 650). It seems they all play it green. Sample attached.

Is there any way to restore this? I tried using RGB filters in VirtualDub, but was unable to get anything better. Any recommendations?


Attached Files
File Type: mp4 Color to Green.mp4 (47.67 MB, 16 downloads)
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Ads / Sponsors
 
Join Date: ∞
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
01-19-2017, 05:21 PM
sanlyn sanlyn is offline
Premium Member
 
Join Date: Aug 2009
Location: N. Carolina and NY, USA
Posts: 3,648
Thanked 1,307 Times in 982 Posts
First, your capture has illegal video levels.
The green portion's U and V channels are totally crippled.
MediaInfo reports that the original frame rate was 25FPS. Is this PAL video that you're trying to capture as NTSC? That won't work. PAL and NTSC use different color carrier frequencies.
How is your camera shooting Hi8? It's usually interlaced, but not always. 1280x720p is progressive, not valid for BluRay/AVCHD regardless of PAL or NTSC. What model Hi8 camera did you use to get 720p?
What software are you using to capture?
Is it green if hooked up directly to TV or other display device, or played in the camera's viewer?
Reply With Quote
The following users thank sanlyn for this useful post: esotech (01-19-2017)
  #3  
01-19-2017, 05:48 PM
esotech esotech is offline
Free Member
 
Join Date: Jan 2017
Posts: 6
Thanked 0 Times in 0 Posts
This video was captured on Sony CCD-TRV308 NTSC -> Elgato Video Capture composite cable -> MacBook Pro with elgato software. I think the video was recorded on the same camcorder its being played on. But totally unsure.
How can I check if it's shooting interlaced or not?
It is green on the devices screen as week as a TV.

It's weird because I have 20 tapes and this is the only one that randomly becomes green.

Also tried playing it on DCR-TRV350 and DCR-TRV840 and still get the green.
Reply With Quote
  #4  
01-19-2017, 06:26 PM
sanlyn sanlyn is offline
Premium Member
 
Join Date: Aug 2009
Location: N. Carolina and NY, USA
Posts: 3,648
Thanked 1,307 Times in 982 Posts
Try setting the input to some PAL format in your capture setup. I wouldn't know how to tell you to do that, as I wouldn't use an Elgato device for lossy Hi8 capture to begin with, and I wouldn't deinterlace it and blow it up to 720p. If set to PAL and played as PAL, the NTSC sections won't play correctly. If NTSC is the only thing your cameras will play, there's not much you can do except try to find a camera that can output PAL with the correct frame rate and color system.
Reply With Quote
The following users thank sanlyn for this useful post: esotech (01-19-2017)
  #5  
01-20-2017, 07:46 AM
NJRoadfan NJRoadfan is offline
Premium Member
 
Join Date: Sep 2010
Posts: 1,155
Thanked 357 Times in 293 Posts
Its likely not a PAL vs. NTSC tape problem. NTSC Handycams will not play PAL tapes at all. Does the tape turn green when viewed on the camcorder's LCD screen? That would eliminate the capture portion from the equation.

OK viewed the sample..... someone turned on Nightshot (IR mode for shooting in the dark), simple as that. That is no way to filter it out however.
Reply With Quote
  #6  
01-20-2017, 08:43 AM
esotech esotech is offline
Free Member
 
Join Date: Jan 2017
Posts: 6
Thanked 0 Times in 0 Posts
Yes it is green when viewed in the camcorders LCD. I do not have a PAL device to view it on. It could definitely be a night shot issue because, there is another tape that's all white for a few minutes with audio (someone says oops nightshot is on). Then video becomes color after they announce that in the audio.
Reply With Quote
  #7  
01-20-2017, 11:38 PM
sanlyn sanlyn is offline
Premium Member
 
Join Date: Aug 2009
Location: N. Carolina and NY, USA
Posts: 3,648
Thanked 1,307 Times in 982 Posts
Quote:
Originally Posted by NJRoadfan View Post
Its likely not a PAL vs. NTSC tape problem. NTSC Handycams will not play PAL tapes at all. Does the tape turn green when viewed on the camcorder's LCD screen? That would eliminate the capture portion from the equation.

OK viewed the sample..... someone turned on Nightshot (IR mode for shooting in the dark), simple as that. That is no way to filter it out however.
Oh, I see. The submitted sample isn't 2 different segments joined together, it's a single segment with the green transition occurring all at once. And you're correct. Well, that's what I get for staying up too late and not paying attention.

Maybe I'm not paying attention again, but didn't those Canon cameras mentioned play interlaced 29.97fps (or 59.94 fields per second) at 4:3? The sample is 29.97fps progressive, so half of the the frames have been discarded by the Elgato, haven't they? That throws away 50% of the temporal and spatial resolution.
Reply With Quote
  #8  
01-23-2017, 06:31 PM
lordsmurf's Avatar
lordsmurf lordsmurf is online now
Site Staff | Video
 
Join Date: Dec 2002
Posts: 13,503
Thanked 2,449 Times in 2,081 Posts
I've seen errors like this before. The recording camera probably had an issue where it was only recording luma (G), not chroma (RB). Luma is mostly green. This appears to be a luma signal only.

This assumes it's not accidental nightshot mode -- which, by the way, it also only luma recording. The chroma noise is so bad at the high ISO levels that you have more noise than signal.

I highly doubt it's a PAL/NTSC issue, for several reasons.

- 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: esotech (01-23-2017)
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Best camera for Video8 tape playback? david151 Capture, Record, Transfer 19 08-13-2019 11:33 AM
JVC HR-S7800U problem, turns off within 3 seconds of tape insertion videoconverter11 Video Hardware Repair 1 03-08-2015 04:52 PM
Sony TRV25 8mm tape playback issue? [SOLVED!] JLegnon Videography: Cameras, TVs and Players 9 08-24-2014 01:19 PM
Problem with SECAM VHS playback / tape capture monks19 Capture, Record, Transfer 4 03-04-2012 10:04 PM

Thread Tools



 
All times are GMT -5. The time now is 08:25 PM