[FFmpeg-trac] #8392(undetermined:reopened): ffprobe skip_frame nokey on wmv shows improper results

[FFmpeg]

#8392: ffprobe skip_frame nokey on wmv shows improper results
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             Reporter:  emmdev       |                    Owner:
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by emmdev):

 * status:  closed => reopened
 * resolution:  needs_more_info =>


Comment:

 OK, I found some sample files on mplayerhq, they exhibit the same issue.

 http://samples.mplayerhq.hu/V-codecs/WVC1/

 file: FlightSimX_720p60_51_15Mbps.wmv
 keys only ex: key_frame=1  pkt_dts_time=0:00:05.972000  pict_type=I
 all frames equiv: key_frame=0  pkt_dts_time=0:00:05.972000  pict_type=P

 file: Test_1440x576_WVC1_6Mbps.wmv
 keys only ex: key_frame=1  pkt_dts_time=0:00:05.000000  pict_type=I
 all frames equiv: key_frame=0  pkt_dts_time=0:00:05.000000  pict_type=P

 pkt_pts_time is N/A for this type of file.


 http://samples.mplayerhq.hu/V-codecs/AVC1/

 file: NeroRecode_STD_AVC_(ateme1022).mp4
 keys only ex: missing
 all frames equiv: key_frame=1  pkt_dts_time=0:00:00.040000  pict_type=I
 keys only ex: key_frame=1  pkt_dts_time=0:00:02.960000  pict_type=I
 all frames equiv: key_frame=0  pkt_dts_time=0:00:02.960000  pict_type=P

 pkt_dts_time doesn't match while pkt_pts_time is listed properly for this
 file.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8392#comment:2>
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