Re^2: Windows Webcam access.

In order to get the slider functions working I am planning to use something like:

ffmpeg -f vfwcap -r 25 -i 0 -f image2 temp_photos\foo_-%03d.jpeg

In order to give me a directory of "frames" without any exclusive lock. This works, although I'm not sure what the highest number is, or what it'll do to my disc fragmentation!

Then I can just do a while loop through them, and they'll look like a video. On exit, I'll do the opposite and recombine them into a video.

However, it's not the most elegant, if I could do it nearer to your method I would, however I do need to write something to a file, because wxMediaCtrl needs a filename or URL

Regards

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Re^3: Windows Webcam access. by Corion (Patriarch) on Sep 01, 2009 at 11:55 UTC
I'm not sure where a slider control can come in helpful, because for me, time is still linear. I'd be very interested if you could show me how to control/adjust the flow of time through a slider, especially if it works in both directions `:)`. But if you want to farm out start/stop/rewind of a movie to another control (which is sensible), my approach of reading single frames won't work out unless the control has a way for you to feed it single frames. Maybe you can hand the control a filehandle instead of an URL or a filename, but (pipe) filehandles have the disadvantage of not being seekable...	[reply] [d/l]

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Re^3: Windows Webcam access.
by Corion (Patriarch) on Sep 01, 2009 at 11:55 UTC

I'm not sure where a slider control can come in helpful, because for me, time is still linear. I'd be very interested if you could show me how to control/adjust the flow of time through a slider, especially if it works in both directions :).

But if you want to farm out start/stop/rewind of a movie to another control (which is sensible), my approach of reading single frames won't work out unless the control has a way for you to feed it single frames. Maybe you can hand the control a filehandle instead of an URL or a filename, but (pipe) filehandles have the disadvantage of not being seekable...

[reply]
[d/l]