[mythtv-commits] Ticket #12328: EventCmdRecStartedWriting/REC_STARTED_WRITING not working for V4L tuners

MythTV noreply at mythtv.org
Sat Apr 18 17:44:19 UTC 2015


#12328: EventCmdRecStartedWriting/REC_STARTED_WRITING not working for V4L tuners
-------------------------------------------------+-------------------------
 Reporter:  kmpatel@…                            |          Owner:
                                                 |  stichnot
     Type:  Bug Report - General                 |         Status:
                                                 |  assigned
 Priority:  minor                                |      Milestone:  unknown
Component:  MythTV - General                     |        Version:  0.27.4
 Severity:  medium                               |     Resolution:
 Keywords:  event, handlers, v4l,                |  Ticket locked:  0
  REC_STARTED_WRITING,                           |
  EventCmdRecStartedWriting                      |
-------------------------------------------------+-------------------------
Changes (by stichnot):

 * owner:   => stichnot
 * status:  infoneeded_new => assigned


Comment:

 This is good, thanks!

 It turns out that in dtvrecorder.cpp, the REC_STARTED_WRITING event is
 only sent when it explicitly notes the first keyframe.  By default, the
 recorder ignores everything before the first keyframe, to avoid displaying
 garbage at the beginning of playback, and so that the seektable frame
 numbering is accurate.

 It may be that your recorder is configured to disable the first-keyframe
 check, or that it is using the NuppelVideoRecorder class which may be
 using a different approach altogether.

 Could you provide a few more items?

 1. What kind of tuner/recorder is it?

 2. What is the mysql output of "select * from capturecard;" (and if there
 are multiple cards, just point out which is the card in question in case
 it's not obvious)

 3. Similar log file, but this time from "mythbackend -v network,record"

--
Ticket URL: <https://code.mythtv.org/trac/ticket/12328#comment:7>
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