Frame Accurate Video Comparison Problem

Jan 29, 2014

I am trying to figure out a way to play two videos in time and be able to switch back and forth in real time.

I have been looking for a way to do a toggle comparison of video in real time.

I thought I figured out a way but either I did something wrong or I have too many triggers.

I have attached the project.

Let me know if you find an error or if there is a better solution.

4 Replies
Christine Hendrickson

Hi Nicholas,

I'll be honest - I didn't make it too far into the triggers you have set up - there are a lot :)

However, after seeing how you have the images for the videos set up, I wondered if it might be a better idea to place one of the sets on a layer instead. You could then toggle through the layers instead and disable any layer-pausing options.

I made a rough modification, but through I'd share it just in case it helps.

Curious to see if there are any other suggestions for this - seems like a pretty cool project!

Nicholas Ng

Ok. So I figured out why I cant do this.

So I fixed a couple miscellaneous things in the example but the major problem is this:

When the state of a object is changed, the object becomes show always.

I proved this in my attached project.

  • Slide 1 is a single frame proof of concept.
  • Slide 2 has dual state images. The obscure state is revealed to show obscure
  • Slide 3 is the full implementation of dual state obscure.
  • Slide 4 has pairs of images at different times. The hidden image is revealed to show obscure.
  • Slide 5 is the full implementation of the image pair obscure.

Notice that all three images that in slide 2 & 4 are revealed in all time. Only one should be shown at a time.

Because of this effect, 3 and 5 only show the top image and not anything below.

Bug or Known 'Feature'?

EDIT: Added Slide 6 which is a variant of Christine's example. This was the best I could come up with even though its not frame accurate.

Christine Hendrickson

Hi Nicholas,

Honestly, I think it's more along the lines of a feature. I did take a look at your updated version - though it may not be frame accurate, I think it looks great. Then again, I don't personally get to see that type of frame-created video. 

The only other option that comes to mind is to trigger those states back to another, which may keep them from always being shown after their state has changed.

I'd love to see some additional suggestions from the community here too. 

If you have any other ideas, please share :)

Have a great day,


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