[vlc-devel] VLC skips on "reduced" MPEG2-TS streams

[Marian Durkovic]

Hi all,

  seems some broadcasters started to use some "reduced" MPEG2-TS streams,
which VLC doesn't play well.

  When debugging with mpeg2dec, only I pictures have PTS/DTS attached, but
P and B ones have none:

   780b2 SEQUENCE_REPEATED MPEG2 MP at ML 720x576 chroma 360x288 fps 25 maxBps
1875000 vbv 229376 picture 720x576 display 720x576 pixel 16x15
   780ba GOP 13:31:21: 1
   780cb PICTURE I fields 2 TFF pts f1ff76ed dts f1ff4cbd time_ref 2 offset
   0/0 0/0
   87e98 SLICE
   87eaa PICTURE B fields 2 TFF time_ref 0 offset 0/0 0/0
   88ccc SLICE
   88cde PICTURE B fields 2 TFF time_ref 1 offset 0/0 0/0
   89b80 SLICE
   89b92 PICTURE P fields 2 TFF time_ref 5 offset 0/0 0/0
   8e794 SLICE
   8e7a6 PICTURE B fields 2 TFF time_ref 3 offset 0/0 0/0
   8f6a0 SLICE
   8f6b2 PICTURE B fields 2 TFF time_ref 4 offset 0/0 0/0
   902dc SLICE
   902ee PICTURE P fields 2 TFF time_ref 8 offset 0/0 0/0
   95860 SLICE
   95872 PICTURE B fields 2 TFF time_ref 6 offset 0/0 0/0
   96a44 SLICE
   96a56 PICTURE B fields 2 TFF time_ref 7 offset 0/0 0/0
   97cf8 SLICE
   97d0a PICTURE P fields 2 TFF time_ref 11 offset 0/0 0/0
   9da44 SLICE
   9da56 PICTURE B fields 2 TFF time_ref 9 offset 0/0 0/0
   9ed38 SLICE
   9ed4a PICTURE B fields 2 TFF time_ref 10 offset 0/0 0/0
   9ffcc SLICE
   a0022 SEQUENCE_REPEATED MPEG2 MP at ML 720x576 chroma 360x288 fps 25 maxBps
   1875000 vbv 229376 picture 720x576 display 720x576 pixel 16x15
   a002a GOP 13:31:21:13
   a003b PICTURE I PROG fields 2 TFF pts f2001fad dts f1fff57d time_ref 2
   offset 0/0 0/0


Are we supposed to interpolate missing PTS/DTSs in such case ?


	Thanks & kind regards,

		M.

--------------------------------------------------------------------------
----                                                                  ----
----   Marian Durkovic                       network  manager         ----
----                                                                  ----
----   Slovak Technical University           Tel: +421 2 524 51 301   ----
----   Computer Centre, Nam. Slobody 17      Fax: +421 2 524 94 351   ----
----   812 43 Bratislava, Slovak Republic    E-mail/sip: md at bts.sk    ----
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