Author Topic: Stop-motion directly to video (for 8mm film convertor)  (Read 638 times)

DanoKrnac

  • New to the forum
  • *
  • Posts: 9
Stop-motion directly to video (for 8mm film convertor)
« on: January 28, 2019, 02:12:03 PM »
Hi,

I hope I'm not making a duplicate topic, but there is one thing that would make unbelievable difference to my conversion of 8mm movies to digital. While I know there is a frame by frame technique, it's extremely time consuming and thus expensive. So I'm using magic lantern on 600D and a variable speed arduino PWM powered film projector  to set custom framerate matching the one on projector. I record it as a normal 1080p video, since shooting it like photographs would be extremely time consuming, but, worse, would destroy the mechanical shutter after a few film reels.

I was able to get the speed steady to around 5/100s of a second but, sadly, that's not enough :(
Since this is an analog device and the state of the film varies, speed still fluctuates creating visible banding.

However there is an approach that would fix every single problem I'm having (banding, frame blending, inconsistent speed, rolling shutter blur. from vibration..) while improving the image quality and speed of the conversion drastically.

Since normal 1080p video from 600D is more than good enough quality wise for the conversion, the only thing I need to fix is to somehow sync every frame from the projector to every frame from the video. I would call this a stop-motion approach. That would, however, mean that camera would need to be externally triggered to make a frame from external source while in the end outputting a normal video.

My 15 year old Lumix camera has this function, but sadly has a terrible resolution (640x480) and no external shutter connector.

So is this even possible? If yes, is it posible to get like 10 fps or so?
Thanks for any kind of feedback
Canon 70D, Canon 600D

Walter Schulz

  • Contributor
  • Hero Member
  • *****
  • Posts: 7240
Re: Stop-motion directly to video (for 8mm film convertor)
« Reply #1 on: January 30, 2019, 11:34:24 AM »
https://www.magiclantern.fm/forum/index.php?topic=19300.msg190451#msg190451
and the rest of miket's posts. Also lookup g3gg0's offer in this thread about implementing another sync method.
Photogs and videographers: Assist in proof reading upcoming in-camera help!. Your input is wanted and needed!

DanoKrnac

  • New to the forum
  • *
  • Posts: 9
Re: Stop-motion directly to video (for 8mm film convertor)
« Reply #2 on: February 01, 2019, 12:41:02 PM »
Thanks a lot! Will do.
Canon 70D, Canon 600D