[mythtv-commits] Ticket #1799: mythtranscode corrupt output on certain dvb streams that mythfronted plays

MythTV mythtv at cvs.mythtv.org
Fri May 12 02:17:50 EDT 2006


#1799: mythtranscode corrupt output on certain dvb streams that mythfronted plays
-----------------------+----------------------------------------------------
 Reporter:  anonymous  |       Owner:  ijr
     Type:  defect     |      Status:  new
 Priority:  minor      |   Milestone:     
Component:  mythtv     |     Version:     
 Severity:  medium     |  
-----------------------+----------------------------------------------------
 ABC Australia is transmitting their closed captions-ish stream in 640x480,
 while the video is in 720x576 - this is a valid combination in mythtv
 itself, and indeed it records/plays just fine.  However, when the stream
 is transcoded to mpeg4 the encoder reads the 720x576 pixels correctly into
 memory, however accesses them as if the stream was 640x480 - resulting in
 completly corrupted output (you know, that whole "lines wrapping around"
 effect that you get in such situations).  I have uploaded a small (10meg)
 example from a promo at http://dspaudio.com/~jaymz/small-test.mpg, which
 will give the "right kind of incorrect output", as it were, and yet play
 perfectly fine in mythfrontend itself (actually taken from the start of
 one of my recordings).  All using current SVN as at 2006-05-11.  I
 attached the libav debug output as a file.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/1799>
MythTV <http://www.mythtv.org/>
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