Date: Thu, 8 Mar 2001 11:26:03 -0600 From: Pete McKenna <pmckenna@qwest.net> To: Protius <protius@bobdbob.com> Cc: freebsd-multimedia@freebsd.org Subject: Re: Video capture Message-ID: <20010308112603.A3684@otto.oss.qwest.net> In-Reply-To: <200103080726.f287QWM34169@teryx.bobdbob.com>; from protius@bobdbob.com on Thu, Mar 08, 2001 at 02:26:32AM -0500 References: <20010307000411.A41216@otto.oss.qwest.net> <200103080726.f287QWM34169@teryx.bobdbob.com>
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Thanks for clarifying that,
One more question, Can arguments be given to select a channel
or frequency for the tuner part of the Bt card ?
Thanks
Pete
On Thu, Mar 08, 2001 at 02:26:32AM -0500, Protius wrote:
>
> Peter McKenna wrote:
> >thanks for posting this, I think I have it close to working, but am
> >wonder how you told the BT8x8 card what input to use.
> >I can capture and it seems happy but I end up with a blue screen.
> >What input options are set by default ? and where are they.
> >I'm trying to capture from the s-video in mostly.
>
> The default input is 0, which is composite in. videocat takes a whole
> pile of arguments, specificly:
> filename width height count brightness contrast input field
>
> filename is where to put the video
> width and height are in pixels
> brightness and contrast are 0 to 255, where 127 is the middle of the range
>
> input is:
> 0 = device 0
> 1 = device 1
> 2 = device 2
> 3 = device 3
> 4 = RGB
> 5 = svideo
>
> and field is a flag, if there is an argument at all, it will capture only
> the even field only.
>
> my normal capture command is:
> videocat somefile.ppm 352 240 57000 130 127 0 foo
>
> Then you can pull individual frames out with getframe:
> getframe somefile.ppm 53100 1 | xv -
>
> The numbers are the same as on getaudio, below.
>
> getframe produces only grayscale images... long story...
>
> extract the audio with:
> getaudio somefile.ppm 100 1000 | someplaybackprogram
>
> The first number is the frame to start on, the second number is how many
> frames of audio to extract. (NTSC frames) If you extract multiple images,
> the image data is just concatenated.
>
> Or, make an mpeg stream with compressit:
> compressit somefile 100 53100
>
> The first number is the start frame, the second number is the end frame.
> Note that there is no extension on the filename passed to compressit.
>
> -Tommy "Are you alright?" "I am allergic to steel."
> protius@bobdbob.com
> KE4ILZ
--
Peter McKenna Qwest Internet Solutions
pmckenna@qwest.net Main 612-664-4000
FAX 612-664-4770
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