Making video 60 times faster

[janis]

In Avidemux, is it possible to change video's speed, so it goes 60 times faster?

E.g., I have a 1 hour video (6 GB), which I would like to go into 1 min video (and should respectively be of approximately 100 MB size).

Thanks!

[eumagga0x2a]

I'm not sure that a 60x timelapse is feasible in one go, you could try to stack the "change fps" filter a couple of times

First of all, disable all audio tracks (you can't speed up them in Avidemux). Assuming the source video is 50 fps, add the "Resample FPS" filter reducing the fps to 25 (PAL) (avoid custom settings as they introduce jitter), then add "Change FPS" filter 25 (PAL) to 50 (PAL). Now add a further instance of the "Resample FPS" filter exactly as above, followed by "Change FPS" back to 50 (PAL). Rinse and repeat.

Each filter pair speeds up the video by factor 2, i.e. you need 6 pairs to speed up it 64x.