[mythtv-commits] Ticket #710: Auto skip commercials too aggressive during backwards seeks.

[MythTV]

#710: Auto skip commercials too aggressive during backwards seeks.
--------------------+-------------------------------------------------------
 Reporter:  bjm     |       Owner:  cpinkham
     Type:  defect  |      Status:  new     
 Priority:  minor   |   Milestone:  0.19    
Component:  mythtv  |     Version:  head    
 Severity:  medium  |  
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With auto skip commercials turned on, backward seeks that cross commercial
 boundaries can trigger unwanted forward skips. For example, Say there is a
 show with three minutes of commercials every ten minutes and I have
 JumpAmount set to four minutes. At the ten minute mark it jumps to minute
 thirteen but I want to look back at something right before the commercial.
 I hit JUMPRWND and it shows one frame at minute nine but then immediately
 auto skips to thirteen again (see example "A").

 {{{
 0                 9 10    13            20    23
 +-------------------+-----+-------------+-----+-------
 A                 v-------<
                   >------->

 B                        v-<
                          >-------------->
 }}}
 It sometimes does start playing at nine but I may have to press JUMPRWND
 for or five times. Variations are that if I am in the middle of a
 commercial and hit JUMPRWND the result is a forward move to the end of the
 commercial break. Also if I hold SEEKRWND during a commercial, the skip
 back that crosses the beginning of the commercial break skips to the end
 and further SEEKRWNDs seek back through the entire break again.

 If I let it play at thirteen for more than a few seconds then press
 JUMPRWND, it may find that it has crossed a boundary and needs to skip to
 the beginning of the next commercial break (see example "B"). Here the
 intent is to go back to somewhere around minute nine but instead it moves
 forward to minute twenty.

 These are all variations of the same problem that the commercial skip code
 should not check if a boundary has been crossed as a result of a backward
 seek. I believe this started about the same time as when code was added
 for the SKIPCOMMBACK key to return to it's previous position if pressed
 shortly after SKIPCOMMERCIAL. However, this can fail too for the same
 reasons.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/710>
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