How to insert frame, every X frames

S

szegedin

Member
Hi All -- If anyone can help me figure out how to do this, or direct me to a better forum to ask around, I'd be very grateful.

Let's say I have a 24fps project. I am trying to figure out how to insert one frame (say, a white still image call it Y) into the footage, every X frames. For example, this frame Y once every 48 frames.

In Vegas, Premier, or generally in any NLE, or better yet directly in ffmpeg in Linux if anyone happens to know. This process would be like inserting a "subliminal message" frame every X images, although that is not my purpose. The footage is too long to just keep dragging and dropping the same still image over and over again into the timeline -- that's all I know how to do to solve this.

Can anyone advise on this? Cheers. :thumbsup:
 
In Premiere, on track 2 place frame Y. Create new transparent video. Place it after Y and trim to 47 frames length. Copy and paste these 2 repeatedly. You can save time by selecting all track 2 contents, copy, paste, select all track 2 again, etc.
 
Thanks much, both.

Cary Knoop said:
I would recommend vapoursynth, you would select a fixed number of frames and then add the image and put this in a loop.
For specific help I would advice the forum on https://forum.doom9.org/
Click to expand...
Installed this, will look at whether I can figure it out.

hyalinejim said:
In Premiere, on track 2 place frame Y. Create new transparent video. Place it after Y and trim to 47 frames length. Copy and paste these 2 repeatedly. You can save time by selecting all track 2 contents, copy, paste, select all track 2 again, etc.
Click to expand...
This is roughly what I knew how to do -- good idea to keep doubling the copy/paste. Would probably be faster than learning whatever Python I have to know to do it in that vapoursynth. Maybe I can do it once and store and hour-long track of what I need for multiple use.
Was hoping there was a process in Vegas/Premier, but I would have found it by now.
 
AE has a default effect for doing this, I've gone totally blank on the name of the filter. (Anyone able to jog my memory? I'm not at my edit station right now.)

You'd drop your white video on the track above for the full duration of your composition (or whatever part of the sequence you want the flashing to occur), and then apply the effect. You adjust the duration and frequency (and I think you can adjust the blend/transparency as well) to suit your needs - however it does not give you TC/frame-based controls, so you can't just dial in "one frame every 48 frames". You'll probably have to play around with it until you get the result you're pleased with, though in the past I know I've worked out how the numbers correlate so have been able to do the conversions and get the exact frequency I'd like.
 
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