Timeline and video ?

In my project, I have a video and a sprite.

I need to make the sprite follow an item on the video when it is playing.

In After Effects, I would use a tracking tool to record the item coordinates as the video plays.

Obviously there is no tracking tool in Construct so I thought about pasting the video as an animation track of the Timeline, move the playhead to play the video image after image and record keyframes for my sprite.

But I don't see how to play the video frame by frame with the animation timeline.

How can I do that ?

That feature does not exist.

Do you mean something like the audio tracks, but for video instead?

This is what I have so far in my timeline

I see, at the moment you can only use a timeline to control the position, size and opacity of a video instance. There is still no way to preview the contents of the video in the editor, using timelines or otherwise.

We will consider this feature for the future.

Oh,

I get it.

thank you, yes, that will be a very useful addition to create augmented videos !

Maybe you can help me with this :

I try to make a little tool to manually record movement of an item on video. Here how it works :

- video is playing

- When user touches the video, current time code, touch.X and Touch.Y are recorded in an array.

- Press Spacebar restarts video and clears array

- press P at the end of the video restarts the video and allow to check if movement has been correctly recorded. Item position is represented by a red dot.

So far, recording works (debugger shows that array is growing when video is touched).

But replay doesn't work. to recover values, I'm checking the array index where recorded value matches current video playback.time.

Any idea what is wrong here ?

thanks !

File is here

dropbox.com/s/z72iqcugb52zsa1/RecordVideoSprite.c3p

Hi Diego,

Wow ! Thank you !

I also came to the conclusion playbacktime had to be rounded and also choosed to make the sprite invisible if no value was found at a given playback time :)

You're approach is more elegant than mine :)

I'm now looking a way to download the array as a csv :)

Done

Hi DiegoM

I'm still on the project and try to make sprite position more accurate.

I tried many ways to forward the video by adding 0.02 second to the playbacktime. It works when the video runs but I also would like to pause the video and forward it from still image to still image. Are there limitations that prevent this ? Do you have a solution ?

I am not very familiar with the inner workings of the video plugin, so I can't say for sure. It seems that setting the playback time to seek to that position and then pausing the video in the same action so the video stays there... doesn't do what I would expect.

It might be a limitation or maybe it's just a bug that can be fixed, I'll ask Ashley about it.

Thanks DiegoM, that would be great to add this and also have complete video control from timeline, including preview