On Sun, 9 Dec 2001, Justin Schoeman wrote:
> Canek Peláez Valdés wrote:
>
> > using "v4l2=1" when loading bttv. NVrec says:
> >
> > [canek@mediana canek]$ QTrec -v /dev/video0 -o movie.mov
> > Starting NVrec.c, version 20011208 (NVrec-20011208).
> > Error opening "/etc/NVrec.conf"
> > Error opening "/home/canek/.NVrec.conf"
> > v4lgen core init - Device /dev/video0
> > v4l2 core init - Size: 384x288 from /dev/video0
> > v4l2 core init - trying format YUV420
> > v4l2 core init - could not request parameters: Invalid argument
> > v4l1 core init - Size: 384x288 from /dev/video0
> > v4l1 core init - could not get enough buffers - using copy mode
> > v4l1 core init - got 8 buffers
> > v4l1 core init - emulating 60 buffers
> > v4l1 core init - trying video format YUV420
> > v4lgen core init - got capable v4l1 device: BT878([many vendors] CPH05X/0).
> >
> > Any way to force it to use V4L2?
>
> No - it seems the v4l2 driver does not support the complete v4l2
> interface. Without this information, NVrec cannot initialise the v4l2
> driver, and must fall back to v4l1.
>
> I believe a patch to implement the missing functions has been submitted
> to Gerd, and will hopefully be included soon.
Hi Justin,
This problem can be easily fixed in NVrec - Gerd's 0.8 bttv requires that
you open the /dev/video O_RDWR and do the mmap with
PROT_READ|PROT_WRITE. Those two changes and NVrec with work with 0.8.
Do you want a patch?
Steve
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