Extracting images from imported Video does not respect frame steps?

[rowild]

I use the video importer to extract images from there. Usually I want to extract every 15th frame from a 30fps video, so I enter 15 in the "frame step" input field, which offers a name template in the form of "frame{filenum}". But it seems it does not count the frame number, but instead the consecutively extracted file numbers.

Shouldn't it rather count the frame number given that the template says "frame{filenum}"? "frame2" is indeed not "Frame 2", when every 15th frame is extracted.
Using the correct frames would also help to identify if a specific sequence needs more images or not, so I could better pinpoint the sequence needed and extract only the images of that respective area.

[tazzo]

that's a bad idea, would be better to extract keyframes only. You can do that with ffmpeg command line.