need to take consecutive screenshots of a .vob file?

(Trying to make gifs)

KM Player gives me a ""Impossible to work at SuperSpeed mode, or there is no KMP transform filter." error when I try to screenshot .vob files. :\

I've already tried everything I can find to fix this, but apparently nothing works.

So I thought maybe I would hold the hotkey for screenshots in VLC player.... but when I tried that it wouldn't take any, and then crashed.

Now the using the screencapture hotkey crashes the program, every. since. time.

I just got SPlayer and thought maybe I could get it to work- but the hotkey stops the video to asks me where I want to save the image- and so holding it down will get me nowhere.

F5 takes it without asking, but it doesn't take near enough; even when I hold the button down.

And so that was useless.

On top of that, when I try to go to the settings panel in attempt to find a function like KMplayer's (where i could just press ctrl+g, "start", and it would take a ton of screenshots) I get a "Error 54, unspecified error" message.

If anyone knows something that can work like KM Player, but will work with .vob types, please tell me; or if you know how to get Splayer or VLC player to work like I need it to, please tell me.

is there any known way to get around any of these things, or does anyone have a recommended (freeware) screen capture.... thing.

One that can take a ton of captures at once.