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Author
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Topic: Comparison of Digitizing Methods, YouTube vid
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Mike Spice
Master Film Handler
Posts: 421
From: none of your business
Registered: Jun 2017
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posted September 17, 2018 09:42 AM
The issue of the Wolverines producing 30fps or 20fps scans is very easily sorted for free.
It requires My MP4Box GUI which can be downloaded from videohelp.com
It contains no adware or virus. (windows only)
It is completely free.
This software will change the frame rate of a Wolverine video file in a flash, without any re encoding.
A 50ft reel takes less than two minutes to process.
I couldn't live without it now.
If you look in the long 'wolverine to digital' thread in this forum, you will see it discussed there.
If you have a wolverine pro or regular, you do need this software in your armoury.
I frame change every thing, very happy with the results and it does not alter the original scan files.
As for the comparison, well done, but I am not sure it is a fair comparison, Wolverine is bound to come out better as it is frame by frame scan, despite it's mp4 compression issues.
I understand not everyone can throw £400 at a scanner and may only have a projector and camera to try and save thier reels, in which case, your video is an excellent starting point for folk to decide which way to go.
If you need a tutorial with My MP4, let me know, I will gladly guide you.
My MP4 Box GUI link
[ September 18, 2018, 09:44 AM: Message edited by: Mike Spice ]
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Paul Adsett
Film God
Posts: 5003
From: USA
Registered: Jun 2003
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posted September 17, 2018 07:24 PM
Yes, obviously the results can be no better than the source material, and 8mm film shot on a high quality camera such as the Bolex's is going to look way better than those using the lesser cameras (and projectors).
I hope you will try copying a small 10 inch or so picture projected on matt white paper, and slowing the video camera shutter speed to minimize flicker. You may find it a great improvement on the Ambico tests that you have run. I don't like the blue tinting produced by the Wolverine, but maybe this can be corrected in video editing software.
Good luck William, and let us know your results.
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The best of all worlds- 8mm, super 8mm, 9.5mm, and HD Digital Projection,
Elmo GS1200 f1.0 2-blade
Eumig S938 Stereo f1.0 Ektar
Panasonic PT-AE4000U digital pj
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William Norman
Junior
Posts: 7
From: Coleman, TX, USA
Registered: Aug 2018
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posted September 18, 2018 06:58 PM
Plans are already in the works to try the shutter adjustment and projection on matte white paper instead of the old Da-Lite screen.
The issue I'm having with Shutter speed is that all of my Panasonic camcorders are locked in at 60fps, and have a maximum shutter speed of 1/60 second. I will try this, but I think even a lower rate might yield better result. I also have an old JVC GZ-HD5U with two frame rate options, auto and 1/8, but 1/8 of a second is way too slow, and designed for extreme low light videography.
Paul, do you have a suggested "ideal" shutter speed for shooting 18fps film? I have been exploring digital DSL cameras for still photography, and many of these have excellent video options these days, with more manual adjustment options than my Panasonic camcorders, including frame rate adjustments.
Also it makes sense to shoot on a white piece of paper. This will yield a smaller, yet brighter, flatter image for the camera to pick up compared to the Da-Lite silver screen across the room.
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Nantawat Kittiwarakul
Master Film Handler
Posts: 280
From: Rajburana, Bangkok, Thailand
Registered: Aug 2017
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posted September 18, 2018 08:27 PM
A brief tried&tested guide for off-the-wall approach.
-Use plain A4 white paper as a screen.
-Set the projector as perpendicular to the screen as possible.
-Set the camcorder right next to the projector,lens to lens - as close as possible.
-Dim the room light,please. ![[Wink]](wink.gif)
-Zoom the projected picture to the longest throw to keep the keystone distortion minimum but still filling that A4 "screen".
-Manual settings on the camcorder. Zoom,focus,white balance,shutter,iris,literally everything (stabilization off,too).
Now the fun part...
- For NTSC region,set the projector's speed to 20 fps,camcorder's shutter speed at 1/60 for either 60i,30p,or 60p frame rate.(1/30s might work better for 30p)
- For PAL land,set the projector's speed to 16.67 fps,camcorder at 1/50 either 50i,25p or50p.(1/25 might be better for 25p also)
- If your camcorder have 24p frame rate,then use it. Set the projector's speed to 16fps,then shutter speed at 1/24s.
- In practice you might have to tweak the projector's speed a bit until the flicker is totally disappeared. Some camcorder might be more tolerable to the flicker than others,don't know. ![[Roll Eyes]](rolleyes.gif)
The real important point is the FIXED SHUTTER SPEED. That's the reason for flicker-free transfer. I even tried doing this with my cellphone (manual mode,1/50s shutter speed) which resulted in flicker-free transfer,too. ![[Big Grin]](biggrin.gif)
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Just a lone collector from a faraway land...
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