[FFmpeg-trac] #254(undetermined:open): mpeg2video encoded in interlaced/field mode decodes incorrectly (demuxer)

[FFmpeg]

#254: mpeg2video encoded in interlaced/field mode decodes incorrectly (demuxer)
-----------------------+---------------------------
Reporter:  ami_stuff   |       Owner:
    Type:  defect      |      Status:  open
Priority:  normal      |   Component:  undetermined
 Version:  git-master  |  Resolution:
Keywords:              |  Blocked By:
Blocking:              |  Reproduced:  1
Analyzed:  0           |
-----------------------+---------------------------
Changes (by cehoyos):

 * status:  new => open
 * version:  unspecified => git-master
 * reproduced:  0 => 1


Comment:

 Also fails now with mplayer -demuxer mpegts -vc ffmpeg12 (the default) and
 vdpau (both used to work), works fine with mplayer -demuxer mpegts -vc
 mpeg12
 {{{
 mplayer t.mpg -vc mpeg12
 MPlayer SVN-r33538-4.5.3 (C) 2000-2011 MPlayer Team

 Playing t.mpg.
 TS file format detected.
 TS_PARSE: COULDN'T SYNC
 VIDEO MPEG2(pid=301) AUDIO MPA(pid=302) NO SUBS (yet)!  PROGRAM N. 1
 VIDEO:  MPEG2  352x288  (aspect 2)  25.000 fps  500.0 kbps (62.5 kbyte/s)
 Load subtitles in ./
 ==========================================================================
 Forced video codec: mpeg12
 Opening video decoder: [libmpeg2] libmpeg2 MPEG 1/2 Video decoder
 Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 (libmpeg2))
 ==========================================================================
 ==========================================================================
 Requested audio codec family [mpg123] (afm=mpg123) not available.
 Enable it at compilation.
 Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
 [mp2float @ 0xd7cfa0]Header missing
 AUDIO: 44100 Hz, 1 ch, floatle, 128.0 kbit/9.07% (ratio: 16000->176400)
 Selected audio codec: [ffmp2float] afm: ffmpeg (FFmpeg MPEG layer-1 and
 layer-2 audio)
 ==========================================================================
 AO: [alsa] 48000Hz 1ch floatle (4 bytes per sample)
 Starting playback...
 Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
 VO: [vdpau] 352x288 => 384x288 Planar YV12
 A:   1.2 V:   1.2 A-V:  0.003 ct: -0.009  29/ 58 12%  3%  0.4% 5 0

 Exiting... (Quit)
 }}}

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Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/254#comment:1>
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