Re: [MLUG] Video capture with Linux

[Mark Rages <EMAIL:PROTECTED>]

On 12/14/05, Mark Haidekker <EMAIL:PROTECTED> wrote:
>
> All,
>
> does anybody have experience with video capture hardware/software?
>
> I'd like to capture frames from a normal composite video camera and display
> them. However, I'd also like to do some on-the-fly image processing, for
> example determine the center and beam diameter of a laser beam. So what I'd
> need is some good GPL API to work with. SANE would not do that, right? Any
> suggestions?
>
> Thanks,
> Mark

For work, I use Kino.  I've modified it to do the following image
processing while capturing:

1) mirror (left-right)
2) mpeg2 encoding
3) gamma adjustment
4) inverse telecine (only useful for film capture).
5) histogram / vectorscope display
6) buffer status display

All of this stuff was hacked into Kino in the most ugly way
imaginable.  Kino is well written C++ and I think the laser beam
tracking would be fairly simple to do.

To use Kino, you'll need to put DV into the computer.  A common source
is a digital camcorder.  Many camcorders will also convert composite
to DV, or you can buy a black box from Canopus for this purpose.

If a command-line system meets your requirements, you could use ffmpeg
and its "vhook" API.  It is quite simple to code simple video filters
to that API.

There are a lot of buggy and crashy Linux video editors out there. 
Kino is stable, at least.

Regards,
Mark
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