Am Mittwoch, 14. Juni 2006 14:41 schrieb luukes:
> hello!
>
> i have a haupauge wintv pvr 150 and use ivtv-0.4.5 (kernel 2.6.14).
> everything works fine - i can grep mpeg2 from the composite-input.
> but because i want to process the incoming video-stream it would
> be nice to have the raw yuv-stream from /dev/video32 instead of mpeg2
> form /dev/video0.
> according to the docs i load the kernel module 'ivtv' with the
> option 'yuv-fixup=1' to get a std. yuv-format. but i can't read the
> resulting stream with my apps (transcode,mplayer).
>
> then i saw a strange error - in /var/log/messages i see
> linux kernel: ivtv0 warning: You've just sailed off the edge of this
> function
>
> and in the output from cat /dev/video32 i can read many strings that
> should not be there!?
>
> has anyone successfully done YUV-streaming (input) with a pvr-150?
>
> thank you
> lukas

now i saw that this warning in the log-messages was the result of wrong
format-settings.

but that changes nothing - without any error or warnigs i can't read the
YUV-stream with any application. the v4l-info displays the correct settings
and the applications get the whole information about this device, but when
they start they aren't able to read the data.

i don't think i am the only one who wants to read from /dev/video32,
so could someone who has used this device already please give me some
hints what could be wrong here or how to read this stream?
again - mpeg2 from /dev/video0 works.

all comments are welcome
thank you
lukas


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