Hi Hermann,
Thanks a lot for u'r comments and suggestions.If we make v4l2
available, will the problem in discussion get over? If so how to
make v4l2 available in my system ? I want to work in framebuffer
device in linux console. so i will use "fbtv"(Framebuffer Tv) from
"xawtv". I don't want X Windows.So it is not possible to work in
"zapping".What I want is to watch TV using "fbtv" (xawtv) and
record the video streams in parallel with "xawtv" using
"ffmpeg".
Thanks in advance.
With Regards,
S.Suriya Mohan.
On Fri, 08 Aug 2003 hermann pitton wrote :
Es schrieb suriya mohan:
>
> Hi hermann,
> Thanks. Now "bttv-0.9.11" compiles without any error and
the
> new
> bttv driver is loaded sucessfully.
> "bttv: driver version 0.7.106 loaded". Line from dmesg.
>
What 0.9.11 loads with 0.7.106 version? There is no v4l2.
> I updated bttv driver to avoid Device or resource busy error.
What
> I
> want is, I want to run "XAWTV" in parallel with "FFMPEG".
> "streamer"
> from "xawtv" records video streams in ".avi" extensions. I
want
> to
> record video streams directly into "mpeg" form. So I
recorded
> video
> streams in "mpeg" form using "ffmpeg". When I execute
"ffmpeg"
> in
> parallel with "xawtv", "Device or resource busy" error occurs.
I
> want
> to watch TV using xawtv and side by side record video
streams
> using
> ffmpeg. "xawtv" uses "/dev/video0" to grab video streams.
> "ffmpeg"
> also uses /dev/video0" to record video streams. One of our
user in
> our
> mailing list adviced me to upgrade "bttv" driver to overcome
> this
> error. Still the problem persists. How to avoid this ?
>
As said I have no bt-card and no running bttv.
Did you try to play the .mpg file with xine during recording?
Also zapping uses ffmpeg for recording and you will see the tv.
Look for
a newest version with an actual ffmpeg to avoid a/v sync
problems. Don't
know the status.
With the saa7134 driver I can launch xawtv -noxv in overlay mode
to have
a preview during ffmpeg or for example divx4rec is doing the
capture.
Don't know why you don't get it, because it seems recording with
xawtv
works.
Afaik, it does exactly that then. (try 0.9.11)
It is possible, because in overlay the datastream goes over the
pci-bus
directly to the videocard and doesn't disturb the capture
process.
To get otherwise a "device busy" is not an error.
About seven weeks ago, there was a "Proposal for channel
coordination
between multiple v4l2 users" here on the list and a main point
was
priority handling on devices. Changes and improvements are
already in
2.6.0-test and I see it also in the patch-2.4.22-pre10-kraxel.
(You can
also test, if it fits for 2.4.22-rc1 :)
Maybe something more is on the way, don't think you need a
second
tv-card.
Hermann
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