Batch screen capture

[nicolasd]

Hi,
I'm looking for a software which automatically takes a screenshot ever X (whatever number I set) frame. I know I can extract every frame from an avi with VirtualDub. But is there any program that would allow me to extract every X (whatever number I set) frame? And I don't want to take screenshots manually. I need several hundreds of screenshots for every movie.

Thanks

[johns0]

Tmpgenc will output frames in sequential order in several formats (bmp,targa,jpg etc..)to choose from,just set the start frame and end frame and file/output to.

[nicolasd]

Tmpgenc just set the start frame and end frame and file/output to.

Actually I'm not looking to extract every frame from frame A to B.

I'm looking to extract a screenshot every, let's say, 2 frames.

[FOO]

I would write an Avisynth script to select every N frames
and feed that to Vdub which will save the video as separate bitmaps.

[housepig]

there are ways to do it with AVISynth, but I'm not a guru, so I don't know the deal.

I saw a script for something very similar go by the forums in the last week or so - if you search for AVISynth as a search term, you might find it. or search for "script"...

*edit .... Foo, you beat me to it!*

[FOO]

SelectEvery(clip,9,0)      # select frames 0, 9, 18, ... from source clip

There is also an "ImageWriter" function to write bitmaps

[teegee420]

Thumbnailer can do this quite easily.

[bigmweb]

AVS script:

AVISource("c:\path\to\movie.avi")
SelectEvery(300,0)

Open .avs file in virtualdubmod,
save image sequence (as tga, bmp or png).

the above script saves every 300th frame starting at frame 0. It saved 767 frames from a 128 minute film in two minutes on my computer.