Hi friends,
I'm now checking a duration issue of a video file. Here is some trace print out when file is opened, so we can know the dts of last AVPacket is 167542, and the last frame time stamp = 167376, and coded_picture_num = 4013 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 113: 00:00:33.416 MAIN rhbc73 process packet, Packet.dts = 292, Packet.pts = -9223372036854775808 Line 114: 00:00:33.416 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 125, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 125, pFrame->coded_picture_number = 3 Line 116: 00:00:33.416 MAIN rhbc73 process packet, Packet.dts = 334, Packet.pts = -9223372036854775808 Line 117: 00:00:33.416 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 167, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 167, pFrame->coded_picture_number = 4 Line 119: 00:00:33.416 MAIN rhbc73 process packet, Packet.dts = 375, Packet.pts = -9223372036854775808 Line 120: 00:00:33.416 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 209, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 209, pFrame->coded_picture_number = 5 Line 122: 00:00:33.416 MAIN rhbc73 process packet, Packet.dts = 417, Packet.pts = -9223372036854775808 Line 123: 00:00:33.416 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 250, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 250, pFrame->coded_picture_number = 6 Line 125: 00:00:33.416 MAIN rhbc73 process packet, Packet.dts = 459, Packet.pts = -9223372036854775808 Line 126: 00:00:33.416 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 292, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 292, pFrame->coded_picture_number = 7 Line 128: 00:00:33.416 MAIN rhbc73 process packet, Packet.dts = 501, Packet.pts = -9223372036854775808 Line 129: 00:00:33.416 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 334, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 334, pFrame->coded_picture_number = 8 Line 131: 00:00:33.416 MAIN rhbc73 process packet, Packet.dts = 542, Packet.pts = -9223372036854775808 Line 132: 00:00:33.416 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 375, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 375, pFrame->coded_picture_number = 9 Line 12134: 00:00:51.168 MAIN rhbc73 process packet, Packet.dts = 167417, Packet.pts = -9223372036854775808 Line 12135: 00:00:51.168 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 167250, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 167250, pFrame->coded_picture_number = 4010 Line 12137: 00:00:51.168 MAIN rhbc73 process packet, Packet.dts = 167459, Packet.pts = -9223372036854775808 Line 12138: 00:00:51.168 MAIN rhbc73 -- get a full frame, pFrame->pkt_dts = 167292, pFrame->pkt_pts = -9223372036854775808, BestEffortTimeStamp = 167292, pFrame->coded_picture_number = 4011 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 But when I check the file using ffprobe -show_frames -select_streams v input I could see [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] the ffprobe and ffmpeg libs were built from same latest source, so I'd like to know why ffprobe could dump a last frame of timestamp 167542 but av_read_frame + avcodec_decode_video2 couldn't Thanks
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