[mythtv-users] Channel Hopping
ijr at case.edu
Sat Oct 8 04:04:01 UTC 2005
On Friday 07 October 2005 11:34 pm, Tim Sailer wrote:
> On Wed, Oct 05, 2005 at 09:21:55AM -0400, Fred Squires wrote:
> > On 10/6/05, James Hansen <mythtv-users at f0rmula.com> wrote:
> > > Lee wrote:
> > > >> There was a recent lengthy (and somewhat heated) thread in the dev
> > > >> list about this. The technical reason for the delay is because the
> > > >> system has to do the following things when changing a channel on
> > > >> "Live TV":
> > > >>
> > > >> 1) Tune the channel.
> > > >> 2) Start encoding the feed.
> > > >> 3) Store the file.
> > > >> 4) Decode the file.
> > > >>
> > > >> Each of these steps takes a little time. If you don't do them, you
> > > >> lost the ability to pause or rewind Live TV, which is one of the
> > > >> sexy things about a PVR.
> > My question is, why delete the ringbuffer at all when changing channels?
> > Just tune to the new channel and continue writing to the same buffer as
> > before. That might make changing channels faster and you'd be able to
> > skip back to something from before the channel change. It would also make
> > accidental channel changes less costly.
> My thought on this is why reuse the same ringbuffer? If you change
> channels, why not start another buffer, and delete the old one in another
> process/thread? Big buffers take time to delete if you are using
> ext2/3 filesystems. Maybe the others would make it faster...
Please people, at least try and read the threads from the last 8 or 9 times
this has come up. The ringbuffer file is not deleted on a channel change.
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