ffmpeg -show_frames does not show all frames?

ffmpeg -show_frames does not show all frames?

I gather Duration of Video via ffmpeg command like this.
ffprobe -f rtsp -rtsp_transport tcp -i
rtsp://old.hanafostv.com/edu_new/10350/E63333_18_130709.ts.pac
and it shows result like this.
Duration: 00:06:57.92, start: 9.999989, bitrate: N/A
And this can right, because when I play this URL with vlc player, it plays
about 6 minutes. After that, I want to check Video frames information via
this command.
ffprobe -show_frames -select_streams v -print_format json=c=1 -f rtsp
-rtsp_transport tcp -i
rtsp://old.hanafostv.com/edu_new/10350/E63333_18_130709.ts.pac
After shows many Video frames information, it stopped here.(Below is final
frame it says)
[h264 @ 0x2dfd080] Cannot use next picture in error concealment
[h264 @ 0x2dfd080] concealing 880 DC, 880 AC, 880 MV errors in P frame
,
{ "media_type": "video", "key_frame": 0, "pkt_pts": 3437529,
"pkt_pts_time": "38.194767", "pkt_dts": 3437529, "pkt_dts_time":
"38.194767", "pkt_duration": 3003, "pkt_duration_time":
"0.033367", "pkt_pos": "-210", "pkt_size": "2741", "width": 1280,
"height": 720, "pix_fmt": "yuv420p", "sample_aspect_ratio": "1:1",
"pict_type": "P", "coded_picture_number": 835,
"display_picture_number": 0, "interlaced_frame": 0,
"top_field_first": 0, "repeat_pict": 0 }
as you can see even though it is the final frame, its pts_time is only
38.194767 s. Then, after 39s, there were no frames? Is it possible?
I am really curious about it. You can Correct my commands to fix this
problem. Thanks.