I am using "XAWTV" to view TV. It uses "/dev/video0". XAWTV records video streams in "avi" format. But I want to record the same in "mpeg" format. So I used "FFMPEG" to record video streams. But it aslo uses "/dev/video0". And when I try to record using FFMPEG in parallel with "XAWTV", I am getting the "device or resource busy" error. How to avoid this conflict ? What i want is, I want to watch TV using "XAWTV" and side by side record video streams using "FFMPEG". How do this ? I tried creating a symbolic link to "/dev/video0" and made FFMPEG to use the symbolic link. But it failed to work out.
with Regards, S.Suriya Mohan.
On Sun, 27 Jul 2003 Champ Clark wrote :
[Charset iso-8859-1 unsupported, filtering to ASCII...]
> On Monday 21 July 2003 13:06, Trey Waters wrote:
> > I've found a few cards based off the BT878A chipset, and it looks like
> > they should be supported ok as far as the driver goes, but I'm skeptical
> > on whether or not each port will have its own /dev/videoN interface. I've
> > tried searching for more info, but can't find any.
>
> On my Linux Media Labs LMLBTM44's all four 878's show up as a separate
> /dev/videoN. So you get (with no other video devices) /dev/video0 through
> video3.
I have the same card here. I'm writing a front end DVR (for
security - based on "motion") for a small company. It's actually a
pretty nice card, but wouldn't work very well for a Tivo type system
(no tuner). Video devices are split up like Lamar said..
/dev/videoN (0-3). I've used port 0 and 1 with full motion (at
352x288 and 640x480) with no problems. I'm using the 2.4.20 kernel
(without the Linux Media drivers). Another nice thing about this
setup, though I have not tested it, while "motion" (motion.sf.net)
is using /dev/video0 and /dev/video1, I _think_ I can use port 2 and
3 with other applications without interfering with motion (ie - not
conflicting - device busy.. etc).
If I'm right, this would make it nice for converting home VCR format
movies... and keeping the "security system" up. I haven't gotten
audio to work with the card (though, i haven't tried to hard either).
It's a nice video card. It's a little high priced, but it's made very
well (the design, layout, etc). It's based on the BT878, so you'll
need a decent CPU and I/O with that many video ports.
- Champ Clark
Oh yeah.. I had much better luck using the standard kernel, and a
non-patched "motion"..
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