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Re: Bah! How do I change channels?

Devin Heitmueller wrote:
On Fri, Jun 26, 2009 at 1:28 PM, Robert
Krakora<rob.krakora@xxxxxxxxxxxxxxxxxxxxx> wrote:
Yes, it is run after mplayer initially tunes it.  However, what is the
difference between mplayer tuning and v4l-ctl tuning?  They are both
submitting the same IOCTLs to the driver to accomplish the same end
result; or is mplayer probably submitting some additional IOCTLS to
"wake" the device?

The issue is that the tuner gets powered down when the v4l device is
closed.  So, when running mplayer first, and then v4l-ctl is being
used to tune, the file handle is held active by mplayer.  But if you
run v4l-ctl first, the v4l-ctl opens the handle, tunes successfully,
and then closes the handle (which powers down the tuner).  Then when
running mplayer (or whatever app), the handle gets reopened but the
tuner is not tuned to the target frequency that v4l-ctl set.


Aaahh yes...I think that you have told me that once before...sorry for making you repeat yourself...

However, with ivtv-tune I can issue a tune to a channel and then open mplayer with no tuning parameters and that channel is playing...

Rob Krakora
Senior Software Engineer
MessageNet Systems
101 East Carmel Dr. Suite 105
Carmel, IN 46032
(317)566-1677 Ext. 206
(317)663-0808 Fax

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