FW: still image capture from video stream
steve at sohara.org
Tue Oct 21 22:48:58 PDT 2003
On Tue, 21 Oct 2003 15:35:49 -0400
stan <stanb at panix.com> wrote:
S> I'm thinking I can do this with a video capture borad, right? Which
S> ones are well supported under FreeBSD? I don't need ultra high
Almost any BT8 based card, and almost nothing else.
There's a very simple program to capture a jpeg from the bktr
interface called bktr2jpeg that should do the job - a search should find
the code quickly enough (it's a single C file very simple code, the
meteor man page has enough information to rewrite it).
You could also set ffmpeg to run at 4 frames per second and emit
an MJPEG, AVI or MPEG stream.
S> resolutin, as a matter of fact, gien the number of images that I'll be
S> accumulating (4/per second * 60 seconds * 60 minutes * 24 hours *
S> number of days I need to keep) small image size is very important.
You can set that down to quarter resolution (160x120 for NTSC).
S> So, how about some pointers to docs on this? And some advice on
S> hardware would be welcome also.
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