Opened 20 years ago

Closed 20 years ago

#1229 closed defect (wontfix)

LiveTV channel change takes a long time

Reported by: dag@… Owned by: Isaac Richards
Priority: minor Milestone: unknown
Component: mythtv Version:
Severity: medium Keywords:
Cc: Ticket locked: no

Description

SVN version: 8871

The sequence to generate this was:

  1. start MythTV
  2. Press "Watch TV". Wait until you get picture.
  3. Change channel Wait again.

4 kill Myth

With the risk of angering the goods I attach the logs. And I WILL continue debugging Isaac, but not until Friday when I am back.

Attachments (3)

mythfront.log.err​ (76.0 KB ) - added by dag@… 20 years ago.
Frontend log
mythtv.log.err​ (30.3 KB ) - added by dag@… 20 years ago.
Backend log
changetimes.txt​ (1.2 KB ) - added by pekka.jaaskelainen@… 20 years ago.
table of channel change times with the tested revisions

Download all attachments as: .zip

Change History (9)

by dag@…, 20 years ago

Attachment: mythfront.log.err​ added

Frontend log

by dag@…, 20 years ago

Attachment: mythtv.log.err​ added

Backend log

comment:1 by dag@…, 20 years ago

This works fine in 8867.

comment:2 by Isaac Richards, 20 years ago

(In [8876]) Speed Oscar's program transitions up a bit, hopefully.

Also refs #1229, and the ticket about slow DVB startup. Should improve, if not fix, both of those.

comment:3 by Isaac Richards, 20 years ago

Resolution: → fixed
Status: new → closed

(In [8891]) Fix problem with things getting slightly confused with tiny files (ie, the dummy recorder produced files from waiting for channel lock in dvb) in livetv.

Should fix #1229.

comment:4 by pekka.jaaskelainen@…, 20 years ago

I think this is not yet fixed. More information in the mailing list thread...

comment:5 by pekka.jaaskelainen@…, 20 years ago

Resolution: fixed
Status: closed → reopened

The channel change seems to slow down at changeset 7961.

by pekka.jaaskelainen@…, 20 years ago

Attachment: changetimes.txt​ added

table of channel change times with the tested revisions

comment:6 by danielk, 20 years ago

Resolution: → wontfix
Status: reopened → closed

[7961] is the LiveTV changes commit for DVB.

Nothing to fix here.

The only way to speed this up would be to implement a video-less signal monitoring stage. That might make sense for #926. I'll help anyone who wants to implement that for 0.20, but it's not a priority for me. There is some code to support that in SVN because this is how I initially implemented signal monitoring, but it is not a simple feature to add.

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