[mythtv-users] Curious fast forward problem
pb.mythtv at gmail.com
Thu Jan 7 14:12:50 UTC 2021
On 1/6/21 4:36 PM, Michael T. Dean wrote:
> Are you sure that the frontend just hasn't gotten an update to the
> currently-detected commercial skiplist and, perhaps, the last update
> it received was one with a commercial start but without its
> accompanying commercial end? Basically it received an update while
> the commercial detection was inside a commercial break (so the last
> mark was a MARK_COMM_START ) and the backend hasn't sent out an update
> that includes the MARK_COMM_END ?
> IIRC, I think the COMMFLAG_UPDATE event tends to be sent (to any
> frontends that requested updates for that program with a
> COMMFLAG_REQUEST event) every 500 frames or so of commercial
> detection, so that would be around 8m 20s of actual program time for a
> 60fps show, but depending on how busy/powerful the system running the
> commercial detection is and depending on how far it's trying to stay
> away from the "now" of the recording, I could see how it could be
> 10+min behind now. For interlaced video, I'm not sure if it's
> actually frames or fields, but if it's still 500 frames, an update
> would be sent after processing about 16m 40s of recording in a 1080i60
> show, for example.
> It's possible that when the flagger recomputes the commercial skip
> list, it ensures it never ends with a MARK_COMM_START, in which case
> this shouldn't be the problem, but I haven't looked.
> Anyway, just a thought. If nothing else, something like this could
> explain the intermittency of the issue. Feel free to ignore me if my
> guess is way off, though. :)
I have commercial detection turned off on all recordings.
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