[vdr] Re: Feature request - time shift

["Johannes Schoeller" <schoeller@izeman.net>]

> > Brian Dorling wrote:
> > > Well,
> > > maybe I dont correctly understand what you want, but I think
> > > just pressing the PAUSE key (starts to record) and then play key
> > > (starts to play back the recording) will give you that.
> > >
> > > If you want a buffer of a certain time that VDR has automagically
> > > recorded without being asked to, that was discussed a few times here
> > > and I dont think is planned at this time.
> > >
> >
> > I think, what he is asking for and what I've seen in many comercial
> > digital records it like this. They simply record everything you are
> > watching, maybe setting some kind of cut mark when switching the channel
> > and keep this recording for a configurable time, mostly up to 3 hours.
> > So this offers not only freeze and continue watching but also looking
> > back a scene - and this without having to program a timer - and you can
> > record something even when it has been started and you see that this
> > movie maybe interesting to record.
> >
>  I know VDR instant time shift, but that is nothing else than
> instant recording / playback like pressing
> RECORD RED OK PAUSE as in a makro.
> If i zap the channels, pressing PAUSE and PLAY,
> zapping and PAUSE / PLAY again and so on,
> than this results in starting many recordings, in the worst case
> more than one on every channels until the load blocked the VDR.
>
> Also if i watch longer than the preset time in VDR time shift mode,
> the timer stops noteless and i'm angry about the missing end of the
> programme.
> It is hard to explain a normal user (i.e. my wife), what is wrong now :-)
>
> Time shift in a comercial receiver is like a buffer,
> the data will be destroid, when you switch the channel.
> You don't have to pay attention about unnecessary recordings.
> You can watch many hours in time shift mode unless to notice about it at
> all.
> Sometimes there is a scene you want to see again,
> but you don't recorded it? No problem for the permanent time shift mode.
> And IF you want to record, you can go back and start the
> recording at the beginning, may be under attention of the EPG data.
>
> It would be nice, if anybody could explain,
> where is the best place to implement
> such a functionality.
> I think it is different from recording and would be a great feature.

this "feature" has been discussed several times. (and i always wanted to
have that.)

i just don't know why it was not implemented (any other cause than klaus'
short amount of time of course ;)- technically speaking it shouldn't be too
hard to implement some kind of "ram based" ring buffer.

eg. you're watching channel 1, ram is filled with the stream you are
watching at the moment, now you change the channel to #2. the stream is
written to ram beginning just at the ending of stream #1, when the allocated
ram is full it starts writing from the beginning.

when you press pause now, or rewind this stream is written to hd (so you can
buffer more time of stream).

with only 128mb of ram you could buffer about 4min.

servus hannes

Johannes Schoeller
<schoeller@izeman.net>




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