[FFmpeg-trac] #3216(undetermined:new): ffprobe and ffmpeg functions return different last frame for same file

[FFmpeg]

#3216: ffprobe and ffmpeg functions return different last frame for same file
-------------------------------------+-------------------------------------
             Reporter:  hxuanyu      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I met an issue that the output of ffprobe -show_frames seems different
 from what av_read_frame+avcodec_decode_video2 ouputs

 The ffprobe and ffmpeg libs were built from same latest code.

 I used ffprobe -show_frames -select_streams v input to print out all frame
 info. and here's the info of last 2 frames

 [FRAME]
 media_type=video
 key_frame=0
 pkt_pts=N/A
 pkt_pts_time=N/A
 pkt_dts=167501
 pkt_dts_time=167.501000
 pkt_duration=N/A
 pkt_duration_time=N/A
 pkt_pos=103794518
 pkt_size=74
 width=1920
 height=1080
 pix_fmt=yuv420p
 sample_aspect_ratio=1:1
 pict_type=P
 coded_picture_number=4016
 display_picture_number=0
 interlaced_frame=0
 top_field_first=0
 repeat_pict=0
 [/FRAME]
 [FRAME]
 media_type=video
 key_frame=0
 pkt_pts=N/A
 pkt_pts_time=N/A
 pkt_dts=167542
 pkt_dts_time=167.542000
 pkt_duration=N/A
 pkt_duration_time=N/A
 pkt_pos=103794920
 pkt_size=74
 width=1920
 height=1080
 pix_fmt=yuv420p
 sample_aspect_ratio=1:1
 pict_type=P
 coded_picture_number=4017
 display_picture_number=0
 interlaced_frame=0
 top_field_first=0
 repeat_pict=0
 [/FRAME]

 on the other hand, our application uses av_read_frame and
 avcodec_decode_video2 to read a avpacket and decode into a frame. Below
 are some traces

         Line 100: 00:00:33.384  MAIN  rhbc73 process packet, Packet.dts =
 0, Packet.pts = -9223372036854775808
         Line 101: 00:00:33.384  MAIN  rhbc73 process packet, Packet.dts =
 42, Packet.pts = -9223372036854775808
         Line 102: 00:00:33.400  MAIN  rhbc73 process packet, Packet.dts =
 83, Packet.pts = -9223372036854775808
         Line 103: 00:00:33.400  MAIN  rhbc73 process packet, Packet.dts =
 125, Packet.pts = -9223372036854775808
         Line 104: 00:00:33.400  MAIN  rhbc73 process packet, Packet.dts =
 167, Packet.pts = -9223372036854775808
         Line 105: 00:00:33.400  MAIN  rhbc73
 -- get a full frame, pFrame->pkt_dts = 0, pFrame->pkt_pts =
 -9223372036854775808, BestEffortTimeStamp = 0,
 pFrame->coded_picture_number = 0
         Line 107: 00:00:33.400  MAIN  rhbc73 process packet, Packet.dts =
 209, Packet.pts = -9223372036854775808
         Line 108: 00:00:33.400  MAIN  rhbc73
 -- get a full frame, pFrame->pkt_dts = 42, pFrame->pkt_pts =
 -9223372036854775808, BestEffortTimeStamp = 42,
 pFrame->coded_picture_number = 1
         Line 110: 00:00:33.400  MAIN  rhbc73 process packet, Packet.dts =
 250, Packet.pts = -9223372036854775808
         Line 111: 00:00:33.416  MAIN  rhbc73
 -- get a full frame, pFrame->pkt_dts = 83, pFrame->pkt_pts =
 -9223372036854775808, BestEffortTimeStamp = 83,
 pFrame->coded_picture_number = 2

         Line 12140: 00:00:51.168  MAIN  rhbc73 process packet, Packet.dts
 = 167501, Packet.pts = -9223372036854775808
         Line 12141: 00:00:51.168  MAIN  rhbc73
 -- get a full frame, pFrame->pkt_dts = 167334, pFrame->pkt_pts =
 -9223372036854775808, BestEffortTimeStamp = 167334,
 pFrame->coded_picture_number = 4012
         Line 12143: 00:00:51.184  MAIN  rhbc73 process packet, Packet.dts
 = 167542, Packet.pts = -9223372036854775808
         Line 12144: 00:00:51.184  MAIN  rhbc73
 -- get a full frame, pFrame->pkt_dts = 167376, pFrame->pkt_pts =
 -9223372036854775808, BestEffortTimeStamp = 167376,
 pFrame->coded_picture_number = 4013

 so from this we can see last frame has different pkt_pts and
 coded_picture_number from the output of ffprobe.

 The file I tested is here
 https://dl.dropboxusercontent.com/u/89678527/Threw%20It%20On%20The%20Ground.avi

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3216>
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