[mythtv-users] I'm in....

[J Donavan Stanley]

On Fri, 2003-11-14 at 10:35, Boyd II, Willy wrote:
> >-----Original Message-----
> >From: Nelson Butterworth [mailto:red_five at charter.net] 
> >Sent: Friday, November 14, 2003 9:16 AM
> >To: Discussion about mythtv
> >Subject: Re: [mythtv-users] I'm in....
> >
> >
> >The delay in channel changes while watching live TV is due to the face 
> >that live TV is cached in a ring buffer, to make it possible to pause 
> >live TV and do instant replays. 3-5 seconds of live TV is 
> >cached to your 
> >hard drive before it is played on screen. When you change channels, it 
> >takes a few seconds to see the channel change occur. BTW, TiVO and 
> >ReplayTV do the same sort of thing, but I don't think most people use 
> >them to watch TV, just to record it.
> 
> FWIW, and to add to my earlier post:  I just asked my co-worker about his
> Tivo experience.  He does use it for live tv, and as far as changing
> channels:  "um, not anything significant... nothing more than regular
> cable... maybe a second or less"  And that's a hardware encoder, on like a
> 53MHz cpu or something?  But with a nice real-time design, of course.  From
> a performance standpoint I'm still curious if we can't re-nice
> mythbackend/mythfrontend, and using a hardware encoder get away with a
> smaller live buffer.  I'm a channel-surfer and I just can't change my ways!
> ;-)  But I still love myth for scheduling recordings...


After I started reading this thread, I went out and hit "channel up" on
my TiVO remote to test this...

Channel Up
[Blank Screen]
Count to 3
[Channel changed]


This is with a Sony DSS tuner so YMMV.