[mythtv-commits] Ticket #11328: HD-PVR recordings can have a long initial sequence with no keyframes, confusing ffmpeg

[MythTV]

#11328: HD-PVR recordings can have a long initial sequence with no keyframes,
confusing ffmpeg
-------------------------------------+-----------------------------
 Reporter:  mythwiki@…               |          Owner:  jpoet
     Type:  Bug Report - General     |         Status:  assigned
 Priority:  minor                    |      Milestone:  unknown
Component:  MythTV - Recording       |        Version:  Unspecified
 Severity:  low                      |     Resolution:
 Keywords:  hd-pvr, ffmpeg, scripts  |  Ticket locked:  0
-------------------------------------+-----------------------------
Changes (by jpoet):

 * owner:  danielk => jpoet
 * status:  infoneeded_new => assigned


Comment:

 We wait for a keyframe before we start writing to the file.  However for
 H.264 (at least) we do not discover that the current AU (frame) is a
 keyframe until several packets into the AU.  We are supposed to buffer all
 the packets of the AU, but that is not working, so the file ends up
 missing the first part of the AU, rendering that keyframe as undecodable.

-- 
Ticket URL: <http://code.mythtv.org/trac/ticket/11328#comment:5>
MythTV <http://code.mythtv.org/trac>
MythTV Media Center