[mythtv] trick modes in live tv

[Daniel Kristjansson]

On Mon, 2010-06-21 at 00:35 -0700, Multimedia King wrote:
> Dear Robert,
> 
> Thanks for the reply.
> You mean myth is supporting only scheduling and recording of the
> streams and is not supporting any trick modes in the live tv? I was
> under the impression that myth is capable of doing trick modes even in
> the live tv for N minutes(back and forward) by maintaining ring buffer
> of live TV.
> 
> Please let me know if my above mentioned assumption is wrong. I
> basically need the logic of creating KeyFrame index and using in ring
> buffer, I already have key frame generation logic for offline files.

MK, MythTV doesn't use a ring buffer anymore, but you could look at the
code from a few releases back. Maybe 0.18, but I'm not sure. What we
do now is just make individual recordings with keyframe indexes created
by the recorders. Then we maintain a LiveTVChain which tells the player
which recording proceed and follow the currently playing recording.
I don't know if trick modes continue from one recording to the next or
if we resume normal play at the next recording, but not having MythTV
handy at the moment I assume we resume normal play.

-- Daniel