Determine video length in frames or time

[quantum]

How can I determine the video length, in frames and time, via code for an AVS that points to an M2V file?

[KpeX]

http://www.avisynth.org/index.php?page=ClipProperties

FrameCount() should work if I understand your question correctly, otherwise use with FrameRate() to get time. i.e. Framecount()/Framerate()=length in seconds

[quantum]

I mean for a stand-alone application in C++ or VB, not in an AVS script which would then have to be interpreted by an application such as virtualdub. Unless there is a way to output results from an AVS script to the command line using a utility that I'm not aware of.

[jonny]

The call sequence is something like this:

AVIFileInit
AVIFileOpen
AVIFileInfo
AVIFileRelease
AVIFileExit

With AVIFileInfo you get all the info you need.
PS: using vfw there is (almost) no difference between avs & avi files.
PPS: you could take a look at avs2avi sources too...

[quantum]

Thanks, that points me in the right direction. I found some samples to get me started.