[mythtv] sound during fast forward/rewind on pvr350 when using it for tv-out

[Simon Kenyon]

to paraphrase:

you're saying that because mute doesn't maintain state it cannot be used to

mute (if necessary)
ff/rew
unmute (if necessary)

in the code.
could mute not maintain state, or does that complicate all sorts of code 
paths?

regards
--
simon
ps i'm speaking from a theoretical/design viewpoint. not asking/demanding 
anything! just having a speculative conversation :-)

On Thursday 18 March 2004 17:45, Joseph A. Caputo wrote:
> On Thursday 18 March 2004 11:57, Simon Kenyon wrote:
> > David Engel wrote:
> > >On Thu, Mar 18, 2004 at 01:49:44PM +0000, Simon Kenyon wrote:
> > >>with ivtv-fb. when i fast forward to rewind then it plays brief
> > >>sequences of video as it goes. unfortunately, it also plays brief
> > >>snatches of audio as well, which IMHO is annoying. this does not
> > >
> > >It's a known problem.  I don't know when it will get fixed since it
> > >requires a significant change to the way Myth does ff/rew.
> >
> > oh well. i'll have to live with it so
> > thanks for the quick answer
>
> You could use the 'trick play' feature instead of bona-fide ff/rew.
>
> Pro/cons:
>
> + gives 'smooth' rather than 'jumpy' ff/rew
>
> - requires more CPU, as it actually decodes every frame, as opposed to
> skipping them like ff/rew does
> - max. speed is lower than ff/rew
>
> That said, I think ff/rew should be able to be re-worked so that it
> doesn't play sound.  Trick play obviously does it.
>
> This has been an item on my list for a long time.  I wrote the initial
> implementation of the current ff/rew behavior, and at the time there
> was no clean way to mute the sound during ff/rew without modifying
> NuppelVideoPlayer, which Isaac didn't want me to do at the time.  Later
> the 'mute' functionality was added, and I thought I might be able to
> utilize that, but it would have been a kludge, and since the mute
> function doesn't maintain state, there was no elegant way to determine
> if the sound should remain muted or not when exiting ff/rew.  Then the
> trick play features were added, and I seem to recall ended up touching
> NuppelVideoPlayer to do things... I guess the author was able to make a
> better argument than I did at the time.
>
> Maybe I'll revisit this, but actually it's not a priority right now; I
> think I'm going to remap my ff/rew keys to do trick play.  Anyone else
> is welcome to take a stab at it...
>
> -JAC
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